SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 10-K [ X ] ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(D) OF THE SECURITIES EXCHANGE ACT OF 1934 FOR THE FISCAL YEAR ENDED DECEMBER 31, 2001 OR [ ] TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(D) OF THE SECURITIES EXCHANGE ACT OF 1934 COMMISSION FILE NUMBER 0-18311 NEUROGEN CORPORATION (Exact name of registrant as specified in its charter) DELAWARE 22-2845714 (State or other jurisdiction of (I.R.S. Employer incorporation or organization) Identification No.) 35 NORTHEAST INDUSTRIAL ROAD BRANFORD, CONNECTICUT 06405 (Address of principal executive offices) (Zip Code) (203) 488-8201 (Registrant's telephone number, including area code) Securities registered pursuant to Section 12(b) of the Act: None Securities registered pursuant to Section 12(g) of the Act: Common Stock, par value $.025 per share (the "Common Stock") (Title of Class) Indicate by check mark whether the registrant (1) has filed all reports required to be filed by Section 13 or 15(d) of the Securities Exchange Act of 1934 during the preceding 12 months (or for such shorter period that the registrant was required to file such reports), and (2) has been subject to filing requirements for the past 90 days. YES X NO --- --- Indicate by check mark if disclosure of delinquent filers pursuant to Item 405 of Regulation S-K is not contained herein, and will not be contained, to the best of registrant's knowledge, in definitive proxy or information statements incorporated by reference in Part III of this Form 10-K or any amendment to this Form 10-K. [ ] The approximate aggregate market value of the Common Stock held by non-affiliates of the registrant was $50,626,033 as of March 1, 2002, based upon the closing price of the Common Stock as reported on The Nasdaq National Market on such date. For purposes of determining this number, shares of Common Stock held by officers, directors and stockholders whose ownership exceeds five percent were excluded. This number is provided only for purposes of this report and does not represent an admission by either the registrant or any such person as to the status of such person. As of March 1, 2002, the registrant had 17,733,476 shares of Common Stock outstanding. DOCUMENTS INCORPORATED BY REFERENCE (1) The Neurogen Corporation Proxy Statement for the Annual Meeting of Stockholders to be held on July 15, 2002 is incorporated by reference into Items 10, 11, 12 and 13 of Part III of this Form 10-K. PART I ITEM 1. BUSINESS Overview Neurogen Corporation (NASDAQ: NRGN) is a leading small molecule drug discovery and development company targeting new drug candidates to improve the lives of patients suffering from neurological, inflammatory, pain and metabolic disorders. Neurogen has generated a portfolio of compelling new drug programs through its fully integrated drug discovery platform, successfully solving complex issues in the discovery of small molecule drugs for valuable targets. Neurogen's strategy is to advance a mix of proprietary drugs independently and, when advantageous, collaborate with world-class pharmaceutical companies during the drug research and development process to obtain additional resources and to access complementary expertise. Neurogen's Accelerated Intelligent Drug Discovery (AIDD) process and its expertise in cellular functional assays enhance the Company's ability to rapidly and cost effectively identify active compounds during the drug discovery process. Neurogen has diversified its drug discovery and development efforts across a broad number of disease-related targets and has discovered multiple drug candidates for each target. Throughout the pharmaceutical industry the majority of all drug candidates fail to overcome all of the obstacles on the way to commercialization. Because of this high attrition rate, we believe that the true value of a drug discovery company's pipeline is most accurately measured by the company's ability to rapidly discover multiple generations of improved candidates within each of several programs, rather than by the promise of any single compound in any one program. We believe that this ability to rapidly and systematically produce multiple generations of incrementally improved drug candidates in multiple programs is our most valuable asset. Although we are much smaller than major pharmaceutical companies, we have discovered ten small molecule drug candidates that we and our pharmaceutical company partners have taken into human clinical trials. Two of these candidates from our programs for the treatment of Alzheimer's disease and insomnia are currently being tested in human trials by our partner in these programs, Pfizer Inc. We are also testing a third candidate from our program for the treatment of inflammatory disorders in human trials. We own all commercial rights to this program. Neurogen is constantly working to gain and maintain a competitive advantage in the process of discovering and developing new drug candidates. As a result, we have generated a high-quality collection, or library, of over 1.3 million potential drug compounds and have created powerful new drug discovery and refinement technologies. The prime example of these new technologies is our Accelerated Intelligent Drug Discovery AIDD(TM) system. Our AIDD system is an engine for the discovery of new drug leads and the optimization of these leads to create drug candidates for clinical development. We believe that this system also enables us to generate chemical matter with which to rapidly assess the functional utility of new gene-based targets. Our AIDD system is a key factor contributing to our belief that our small molecule drug discovery and development platform is among the most advanced and efficient in the industry. Background on the Drug Discovery Industry The Traditional Drug Discovery Process Most drugs work by binding to a particular target in the body, thereby altering communication between cells or otherwise regulating cellular activity. Therefore, the traditional path to discovering small molecule drugs typically begins with the identification of a biological target that is believed to regulate cellular communication or activities which could be modulated to treat a given disorder. A test, or assay, is then developed in order to discover compounds with biological activity at this target. Such an assay facilitates the screening of the target against a library of many compounds that have been synthesized in the laboratory. Compounds that bind to the target protein and alter its activity are referred to as "hits." Medicinal chemists then optimize these hits until they have sufficient potency to become lead candidates and then improve their "drug-like" properties, such as gastrointestinal absorption, stability, freedom from unwanted activities, etc., with the goal of producing a successful drug development candidate. Chemists typically try to streamline the process by copying chemical structures from known active compounds. Even taking this approach, however, the number of possible compounds that could be made is too vast to actually test against even a single target using any available technology. Generally, the search is further narrowed only by educated guessing. As a result of the uncertainty of this approach, traditional methods can take many years or may fail entirely. If it were possible to predict in advance which compounds would result in a hit, and which chemical changes would help optimize hits into drug candidates, the drug discovery process would be vastly simplified. Unfortunately, the traditional drug discovery process has had to rely on a trial and error approach that has proven extremely expensive, inefficient and unreliable. Optimization of hits to achieve the delicate balance of properties necessary for a successful drug is still a daunting task. Most hits are never optimized into successful drugs despite years of effort. Drug Discovery in the Post-Genomics Era Private and public groups have announced the full sequencing of the human genome. The sequencing and deciphering of the human genome provides a useful piece in the drug discovery puzzle. Genes and, more significantly, the proteins they code for can be regulators of biological activity and thus represent potential drug targets. Today all marketed drugs interact at fewer than 500 distinct biological targets. It has been estimated that once we more fully understand the role and interactions of the 30,000 or more genes comprising the human genome, the number of valid drug targets will increase to several thousand. Today, the pharmaceutical and biotechnology industries are facing an explosion of newly identified potential targets. However, virtually all of these potential targets have a very low level of validation and it is believed that most potential targets will not prove useful. Once identified, a target must be validated as useful. There are many levels of validation. Early indications of validity may be little more than educated guesses, derived from similarity to known targets and the identity of which tissues express a particular gene. Full validity for a new target is not established until drugs that interact at that target are tested in large numbers of humans. The explosion of potential targets coupled with the decreasing level of validity of those targets presents two significant challenges to pharmaceutical and biotechnology companies over the next several years. One problem in the post-genomics world is how to quickly determine which genes might be useful targets for which diseases. An even more difficult task is to efficiently exploit the availability of new potential targets by rapidly discovering new lead compounds and optimizing such leads into drug candidates. Finding superior methods and technologies to determine if newly isolated genes represent good targets and devising workable strategies to identify the most promising compounds for screening and optimization are essential steps in accelerating and increasing the probability of success of the drug discovery process. We believe that the greatest value created from genomics efforts will not be in the new targets they provide, but in the discovery of new drugs, especially small molecule drugs, which work through these new targets. The Neurogen Competitive Advantage At Neurogen, we have developed a drug discovery and development platform designed to rapidly discover drug candidates for valuable potential targets where others have failed and to capitalize on the wealth of new potential drug targets. We believe our proprietary platform enables us to rapidly and efficiently discover compounds that hit new potential drug targets, evaluate the utility of those targets and optimize useful leads into new drug candidates. We focus our efforts on the discovery and development of small molecule drugs. Small molecule drugs are usually more stable and easily absorbed than large molecule drugs, and so in most cases may be administered as a pill, a patch, or an ointment. In addition, small molecule drugs are generally much easier and less expensive to manufacture, distribute, and store. Protein-based large molecule drugs typically require refrigeration, while most small molecule drugs do not. Small molecule drugs can also be safely shipped and stored at regular temperatures. Small molecule drugs that can be taken orally currently make up about three quarters of the sales of the top 100 prescription drugs. Additionally, where there is a choice, patients generally would rather take a pill than an injection. Components of Neurogen's Discovery and Development Platform o Accelerated Intelligent Drug Discovery (AIDD(TM))system AIDD is an integrated system of hardware, software, and processes that allows scientists to improve on the trial and error approach traditionally associated with drug discovery and development. This system incorporates automated robotics guided by state-of-the-art computerization, including neural network-based artificial intelligence, to aid our scientists as we design, model, synthesize and screen new chemical compounds. Specifically, AIDD enables our scientists to streamline and accelerate the drug discovery process through the effective and efficient iterative application of the screening, computational modeling and synthesis phases of discovery research. Our AIDD-based discovery system works in a closed drug discovery loop of repeated cycles of automated synthesis, testing, and analysis. During each cycle, which can take as little as two weeks, a computerized, or virtual, model of the interaction between the compounds being screened and the target being screened is created. With each repetition of the cycle, the virtual model is improved and refined. The neural network system then uses the upgraded model to aid our scientists in making better predictions about which compounds should be synthesized and/or screened in the next cycle. AIDD extends compound modeling, prediction, and design capabilities beyond that achievable by human perception alone. At the same time, AIDD is designed to carry out this drug discovery cycle with the exceptionally efficient use of discovery resources. o Focused Compound Library and Virtual Library(TM). Our AIDD-based system works in tandem with our focused compound library. Instead of randomly generating a compound library as many other drug discovery companies have done, we have chosen to bias or "enrich" our compound library in favor of selected families of compounds. Because the number of small organic compounds that can be synthesized is virtually infinite, we believe that to be successful in the drug discovery process, it is not the biggest or most diverse library that counts, but rather the richest and most intelligently designed. AIDD aids our scientists by relating functional molecules not just by their core structures, but also by their overall posture in chemical space. By focusing on the overall orientation of active compounds, rather than solely on their core structures, AIDD helps our scientists as they seek to identify functionally related groups of compounds that we call "Islands(TM)." Starting with computer models of key characteristics both of compounds that work well and of those that work poorly, AIDD allows us to rapidly evaluate a large number of promising chemical variants using our automated techniques. This process allows us to expand identified Islands and to discover new ones. We add compounds newly synthesized in the process to our enriched compound library and subsequently test them against multiple targets via high throughput screening. The results of each of these cycles of synthesis, analysis and testing are exploited to refine the AIDD models so as to aid us in the design of better compounds and the discovery of new Islands of high activity potential. AIDD's ability to design new compounds and to discover new Islands is accomplished not only by the testing of real compounds already in our enriched library, but by testing computer-designed molecules in a huge "virtual" library. These compounds exist only as computer-based compound models, screened against computer-based target models. The results of this Virtual Screening(TM) of our Virtual Library(TM), which includes several hundred billion virtual compounds, are also integrated into each succeeding reiteration of the AIDD-based discovery process. Promising virtual compounds are synthesized, added to the enriched compound library, and tested against actual targets via high throughput screening. In this process we seek to generate new Islands of high activity potential structures and refine the chemical leads that we have identified until we reach compounds that we believe are promising enough to move to the next phases of drug research and development. In addition, by determining which compounds in which Islands react with newly identified targets with a lower level of validity, we believe we can efficiently discover a great deal about the ultimate utility of such targets. o Biological Expertise We have expanded Neurogen's expertise in receptor biology beyond gamma-aminobutyric acid GABA receptors, the Company's original focus. Today we believe that we have one of the leading receptor biology teams in the industry. We utilize this expertise in the design and construction of screening assays to capitalize on novel biological targets in our drug discovery efforts. Neurogen does not engage in so-called "me too" drug discovery, by attempting to change the chemical structure of an existing drug just enough to create a new patentable product that may offer little or no improvement over existing therapies working through the same biological target. Rather, we focus on discovering novel drugs, and all of the candidates we have taken into the clinic work by distinctly new target mechanisms designed to provide significant therapeutic advantages. We believe that our scientific expertise coupled with our AIDD-based discovery system and our enriched library will allow us to continue to efficiently capitalize on valuable drug targets where others have failed to discover successful drug candidates and to capitalize on the large number of new potential targets that have resulted from the sequencing of the human genome. Neurogen's Business Strategy Neurogen's vision is to become a continuously profitable company excelling at the creation of small molecule drugs using a seamless, integrated discovery, development and medical paradigm to provide maximal value for the patient and for the shareholder. The following are the key elements of the business strategy we are employing to achieve the Neurogen vision: o Create a risk-balanced drug portfolio. To increase the probability of successful drug discovery and development efforts, we are pursuing multiple promising targets with multiple drug candidates for multiple disorders. Neurogen believes that the robustness of a drug portfolio should be based on the diversity of the programs in the pipeline, rather than betting on a single potential blockbuster drug. We are concentrating our efforts on key therapeutic areas (neuroscience, pain and inflammation) within which clinical indications may be developed for a variety of disorders, balancing risk against potential value. We believe that our ability to produce multiple generations of candidates in multiple programs using AIDD distinguishes Neurogen as a leading drug discovery and development company. O Build our development capability. Neurogen possesses a powerful drug discovery capability which we are seamlessly linking to pharmaceutical development and clinical initiatives so that we continuously optimize drug properties. We believe this integrated medical feedback loop will speed development of compounds in the clinic, and we are deploying additional resources to support the early clinical trials of our lead drug candidates. o Selectively partner our drug programs. Neurogen's partnering strategy seeks to retain ownership and control of programs as far downstream as possible, balancing risk for the Company while maximizing return for shareholders. We are building capabilities internally to take programs further in clinical development. These capabilities enable us to pursue a flexible business model, using partnered programs when we feel it will be competitively and economically advantageous to do so. When we partner our programs we seek to collaborate with pharmaceutical leaders with demonstrated strengths and resources which complement our own. Neurogen Drug Programs Neurogen designs and develops drugs that we believe will offer therapeutic advantages or reduced side effects over drugs currently available to treat a particular disease. Most of our programs address novel targets for which significant scientific evidence exists to suggest that the target mechanism plays a meaningful role in the disease or disorder we seek to treat. On a select basis, we have also established discovery programs for targets that have been newly identified as potential mediators in a disease where less is known about the role of the target mechanism, but where we feel the risk/reward profile is particularly compelling. In both cases, we believe that by designing drugs specifically targeting a receptor, such compounds offer the potential for equivalent or improved efficacy with fewer side effects than drugs currently on the market, or may cause markets to grow in areas where few effective therapeutics currently exist. In addition, drugs active against new targets offer the possibility of adding to or synergistically improving existing therapy. The following table summarizes our most advanced programs in our current drug pipeline: Disorder Target Mechanism Program Status Commercial Rights - ------------------------------ -------------------------- --------------------------- -------------------------- - ------------------------------ -------------------------- --------------------------- -------------------------- - ------------------------------ -------------------------- --------------------------- -------------------------- - ------------------------------ -------------------------- --------------------------- -------------------------- Cognition Disorders GABA -Phase II (NGD 97-1) Pfizer Marketing/ (e.g. Alzheimer's Disease) -Preclinical development Neurogen Royalty (NGD 97-2) - ------------------------------ -------------------------- --------------------------- -------------------------- - ------------------------------ -------------------------- --------------------------- -------------------------- Anxiety and Depression GABA -Completed Phase IIa Pfizer Marketing/ (NGD 91-3). Compound did Neurogen Royalty not reach statistical significance for efficacy - ------------------------------ -------------------------- --------------------------- -------------------------- - ------------------------------ -------------------------- --------------------------- -------------------------- Autoimmune and pulmonary C5a Phase I Neurogen disease (NGD 2000-1) - ------------------------------ -------------------------- --------------------------- -------------------------- - ------------------------------ -------------------------- --------------------------- -------------------------- Insomnia GABA Phase I Pfizer Marketing/ (NGD 96-3) Neurogen Royalty - ------------------------------ -------------------------- --------------------------- -------------------------- - ------------------------------ -------------------------- --------------------------- -------------------------- Depression and Stress CRF1 Preclinical development Aventis Marketing/ (NGD 98-2) Neurogen Royalty - ------------------------------ -------------------------- --------------------------- -------------------------- - ------------------------------ -------------------------- --------------------------- -------------------------- Pain VR1 Candidate optimization Neurogen - ------------------------------ -------------------------- --------------------------- -------------------------- - ------------------------------ -------------------------- --------------------------- -------------------------- Obesity MCH Research Neurogen - ------------------------------ -------------------------- --------------------------- -------------------------- In the section below, we describe our most significant active drug development programs in detail. Cognition Disorders (GABA): Memory loss is one of the most devastating symptoms of neurodegenerative diseases such as Alzheimer's disease and Parkinson's disease. Research sponsored by the National Institute for Mental Health indicates that as many as 5 million people in the United States suffer from dementia, a condition characterized by the impairment of learning and recall. Another prominent study indicates that approximately 10% of people over age 65 suffer from some form of dementia. Industry analysts estimate the current annual market for drugs to treat cognitive disorders to be in excess of $1.0 billion worldwide. We have discovered a number of compounds that exhibit memory enhancing effects in animal models by modulating GABA activity at receptor subtypes we believe are involved in the storage and retrieval of memory. Some drugs impair memory by increasing GABA activity in memory centers of the brain. These drugs are often used in out-patient surgery to cause the patient to forget the surgical procedure. Our approach in this program is to modulate the GABA system in the opposite direction from these drugs which impair memory. Our drug candidates selectively decrease GABA activity in the memory centers of the brain, an approach which has the potential to thereby enhance memory. Animal studies, to date, suggest that compounds with this activity are efficacious in enhancing memory. Currently, Pfizer, our collaborative partner in this program, is evaluating the most advanced of these compounds, NGD 97-1, in Phase II human clinical studies, which began in the first quarter of 2001. Inflammation and Autoimmune Disorders (C5a): Complement component C5a promotes inflammation, attracts white blood cells, and may trigger the immune system to start attacking the body's own tissues, an inappropriate reaction central to autoimmune and inflammatory diseases. Industry estimates value sales of drugs to treat inflammation, autoimmune and pulmonary disorders at $23 billion worldwide. Neurogen scientists believe that inhibiting the activation of the C5a receptor may work to treat inflammation in rheumatoid arthritis, asthma, and other autoimmune diseases by blocking inflammatory responses . A small molecule drug inhibiting the C5a receptor could also be effective in treating other inflammatory diseases with the ease of oral delivery and without many of the side effects associated with currently available treatments. We have identified several compounds that potently block the activation of C5a receptors. Neurogen's leading compound in this program, NGD 2000-1 is currently in Phase I clinical trials. To date, we have retained all rights to our C5a antagonist program. Insomnia (GABA): Recent studies indicate that as many as 20 million people in the United States experience chronic insomnia and an additional 20 to 30 million Americans experience intermittent sleep disorders. Industry analysts estimate that the annual market for drugs to treat insomnia is more than $1.5 billion worldwide and over $500 million in the United States. We are developing drugs to treat sleep disorders, primarily insomnia. While currently marketed drugs to treat sleep disorders, known as hypnotics, are effective, they may cause numerous side effects, including "hangovers," rebound insomnia, short-term memory loss and addiction. The link between the GABA system and sleep is illustrated by the benzodiazapine class of drugs such as Valium(R), which cause sleepiness, and by drugs marketed to treat insomnia such as Ambien(R) and Sonata(R), which work through the same GABA receptors as the benzodiazapines. We have identified drug candidates to treat insomnia that have a different GABA receptor binding profile than currently marketed drugs. Animal studies, to date, suggest that these compounds are efficacious in inducing sleep with fewer side effects than existing therapies. Drugs to treat insomnia should not only induce sleep but they should have pharmacokinetic properties which cause the drug to work quickly and then be out of the system before morning. Pfizer, our partner in this program, is currently evaluating our lead compound, NGD 96-3, in Phase I clinical studies. Depression and Stress (CRF1): Depression is one of the most prevalent mental illnesses in the United States, affecting approximately 17 million people or 9% of the adult population annually according to the National Institute of Mental Health. While recent pharmaceutical research has led to improved drugs, such as Prozac(R), for the treatment of depression, these medications have limitations in their use, primarily because of their slow onset of therapeutic action (often greater than 10 days from the commencement of dosing), lack of efficacy in some patients, and side effects such as sexual dysfunction. Industry analysts estimate the current annual market for antidepressants to be approximately $17 billion worldwide. Stress is a condition commonly associated with depression. A number of neuropeptide receptors that appear to be involved in stress responses, including receptors for CRF1, exhibit altered characteristics in depressed patients. We believe that an orally available drug candidate that blocks the CRF1 receptor may be efficacious in relieving depression, anxiety and/or stress related disorders without significant side effects. A number of companies are seeking to develop CRF1 drug candidates. To date, many companies have experienced difficulties in identifying CRF1 blockers which have drug properties appropriate for commercialization. We believe this is due to the fact that the scope of known chemical structures which block CRF1 is relatively narrow. We have discovered a number of compounds that block the CRF1 receptor subtype and have demonstrated efficacy in animal models of depression and stress. Importantly, the chemical structure of these compounds is significantly outside of the scope of known CRF1 blockers. We believe these novel chemical templates hold the potential of avoiding the development issues of known CRF1 structures. In December of 2001, we entered into a collaborative agreement with Aventis Pharmacuticals (described below) to research and develop compounds to modulate CRF1 receptors. Neurogen and Aventis are evaluating the most advanced of these compounds in preclinical tests in preparation for clinical trials. Pain (VR-1): Neurogen has established a program to explore the utility of compounds that modulate the type 1 Vanilloid Receptor (VR-1) so as to develop drugs for the treatment of chronic pain. Studies in genetically altered mice lacking the VR-1 receptor provide strong evidence for a role of VR-1 in the sensation of noxious heat as well as thermal hyperalgesia(heightened sensitivity to pain) in models of inflammatory pain. Neurogen researchers believe that a drug which blocks the VR-1 receptor could benefit patients suffering from various types of inflammatory pain states and specific types of nociceptive, or localized, pain. Through our AIDD program, we have discovered and optimized VR-1 antagonist drug leads suitable for the further exploration of the utility of this target. To date, we have retained all commercial rights to our VR-1 program. Obesity (MCH): Neurogen has established a program to explore the utility of and develop drugs that modulate the effects of Melanin Concentrating Hormone (MCH) for the treatment of obesity. MCH-deficient mice have reduced body weight and leanness due to reduced feeding and increased metabolic rate, suggesting a role for MCH in the central regulation of food intake and energy expenditure. Neurogen researchers believe that a drug that blocks the activity of MCH could decrease appetite and body weight. We have discovered and optimized MCH antagonist drug leads suitable for further exploration of the utility of this target. To date, we have retained all commercial rights to our MCH program. Neurogen Collaborations Neurogen's strategy is to advance a mix of proprietary drugs independently and, when advantageous, collaborate with world-class pharmaceutical companies during the drug development process to obtain additional resources and to access complementary expertise. The Company's collaboration agreements offer funding for drug discovery and development programs as well as clinical, manufacturing, marketing, and sales expertise. At the same time, Neurogen has retained certain rights to future royalties or profit-sharing for successful drugs resulting from collaborative programs. These strategic alliances balance the Company's exposure to research and development risks inherent in the industry while retaining a share in the success of future products. A summary of the material terms of our existing collaborative agreements follows: Pfizer Inc. o The 1992 Pfizer Agreement - covers our GABA-based anxiety, depression and cognitive disorders program - Pfizer purchased 1.0 million shares of our common stock for $13.8 million. - We received funding from 1992 through 2001 for collaborative research and development under these programs. - Subject to certain diligence obligations, Pfizer has the right to determine when to advance compounds in the clinical process. - We will receive milestone payments if specified development and regulatory objectives are achieved. - Pfizer received the exclusive worldwide license to manufacture, use and sell GABA-based anxiolytics, anti-depressants and cognition enhancers developed in this collaboration. - Pfizer is required to pay us royalties based on net sales levels, if any, for such products. - In December 2001, our collaborative research program came to its scheduled conclusion. Pfizer is currently developing candidates and evaluating other candidates from the program to determine whether further development is desirable. o The 1994 Pfizer Agreement - covers our GABA-based sleep disorder program - Pfizer purchased approximately 1.1 million shares of our common stock for approximately $9.9 million. - We received funding from 1994 through 2001 for research and development under this program. - Pfizer has the right to determine when to advance compounds in the clinical process. - We will receive milestone payments if specified development and regulatory objectives are achieved. - Pfizer received the exclusive worldwide license to manufacture, use and sell GABA-based sleep disorder products developed in the collaboration. - Pfizer is required to pay us royalties based on net sales levels, if any, for such products. - In December 2001, our collaborative research program came to its scheduled conclusion. Pfizer is currently developing candidates and evaluating other candidates from the program to determine whether further development is desirable. o The 1999 Pfizer Technology Transfer Agreement - license for a portion of our AIDD technology - Pfizer received a non-exclusive license to a portion of our AIDD technology. - We have received as of December 31, 2001 $24 million and may receive up to an additional $3 million for transfer of this technology. - We may receive additional payments based upon Pfizer's success in using the technology. o The 2001 Aventis CRF1 Collaboration Agreement - Aventis paid $10 million for the licensing of Neurogen's CRF1 technology. - Neurogen will receive committed research payments and be reimbursed for research expenses for three years from the effective date. - Neurogen will receive milestone payments if specified development and regulatory objectives are achieved. - Aventis received the exclusive worldwide license to manufacture, use and sell CRF1 receptor modulatory products developed in the collaboration. - Aventis is required to pay us royalties based on net sales levels, if any, for such products. Patents and Proprietary Technology Our success depends, in part, on our ability to obtain and enforce patents, maintain trade secrets and operate without infringing the intellectual property rights of third parties. We file patent applications both in the United States and in foreign countries, as we deem appropriate, for protection of both our products and our processes. To date, we are the sole assignee of 171 issued United States patents and numerous foreign patents: o 66 of our issued United States patents and several pending patent applications concern the compounds in our GABA-based program to discover drugs to treat anxiety, sleep disorders and dementia; o 71 of our issued United States patents and several pending patent applications concern compounds that modulate activity at receptor subtypes for the neurotransmitter dopamine, which is thought to play a role in schizophrenia; o 23 of our issued United States patents and several pending patent applications are in our drug discovery program to treat depression through the CRF1 receptor; and o Five of our issued United States patents and several pending patent applications concern NPY receptor-targeted drug discovery candidates to treat obesity. We are not currently engaged in any research based on any technology transfer that we believe would obligate us to pay royalties to any third party. The patent position of biotechnology and pharmaceutical firms is highly uncertain and involves many complex legal and technical issues. There is considerable uncertainty regarding the breadth of claims allowed in such cases and the degree of protection afforded under such patents. As a result, we cannot assure you that our patent applications will be successful or that our current or future patents will afford us protection against our competitors. It is possible that our patents will be successfully challenged or that patents issued to others may preclude us from commercializing our products. Litigation to establish the validity of patents, to defend against infringement claims or to assert infringement claims against others can be lengthy and expensive, even if a favorable result is obtained. Moreover, much of our expertise and technology cannot be patented. We also rely heavily on trade secrets and confidentiality agreements with collaborators, advisors, employees, consultants, vendors and other service providers. We cannot assure you that these agreements will not be breached or that our trade secrets will not otherwise become known or be independently discovered by competitors. Our business would be adversely affected if our competitors were able to learn our secrets or if we were unable to protect our intellectual property. Competition The biopharmaceutical industry is highly competitive and subject to rapid and substantial technological change. Developments by others may render our products under development or technologies noncompetitive or obsolete, or we may be unable to keep pace with technological developments or other market factors. Technological competition in the industry from pharmaceutical and biotechnology companies, universities, governmental entities and others diversifying into the field is intense and is expected to increase. Many of these entities have significantly greater research and development capabilities than we do, as well as substantially more marketing, manufacturing, financial and managerial resources. These entities represent significant competition for us. In addition, acquisitions of, or investments in, competing development-stage pharmaceutical or biotechnology companies by large corporations could increase such competitors' financial, marketing, manufacturing and other resources. Competitors have developed or are in the process of developing technologies that are, or in the future may be, the basis for competitive products. Our competitors may develop products that are safer, more effective or less costly than any products we may develop or may be able to complete their development more quickly. If a competitor were to develop and successfully commercialize a drug similar to one we were working on before us, it would put us at a significant competitive disadvantage. Manufacturing Neurogen is currently relying, in part, on third-party manufacturers to produce large quantities of development candidate compounds for pre-clinical development and dosage forms of these candidates to support clinical trials. Pfizer manufactures or will be responsible for manufacturing, drugs for clinical trials which are subject to the 1992 Pfizer Agreement and the 1994 Pfizer Agreement and has the right to manufacture future products under these collaborations, if any, for commercialization. Aventis Pharmaceuticals will be responsible for manufacturing, or having manufactured, drugs for clinical trials which are subject to the 2001 Aventis Agreement, and has the right to manufacture future products under the collaboration, if any, for commercialization. With respect to compounds not currently subject to collaborations, we currently utilize third-party manufacturers for preclinical development and clinical trials. Sales and Marketing Neurogen's strategy is to market our products either directly or through co-promotion arrangements or other licensing arrangements with large pharmaceutical or biotechnology companies. We do not expect to establish a direct sales capability for at least the next several years, though we may pursue such a capability in the future. Pfizer has the right to market worldwide future products, if any, resulting from the Pfizer Agreements. Aventis has the right to market worldwide future products, if any, resulting from the 2001 Aventis CRF1 Collaboration Agreement. Government Regulation The production and marketing of our products and our research and development activities are subject to regulation for safety, efficacy and quality by numerous governmental authorities in the United States and other countries. In the United States, drugs are subject to rigorous federal regulation and, to a lesser extent, state regulation. The Federal Food, Drug and Cosmetic Act, as amended, and the regulations promulgated thereunder, and other federal and state statutes and regulations govern, among other things, the testing, manufacture, safety, efficacy, labeling, storage, record keeping, approval, advertising and promotion of our products. Product development and approval within this regulatory framework will take a number of years and involve the expenditure of substantial resources. The steps required before a pharmaceutical agent may be marketed in the United States include: 1. Pre-clinical laboratory tests, in vivo pre-clinical studies and formulation studies, 2. The submission to the FDA of an Investigational New Drug Application (IND) for human clinical testing which must become effective before human clinical trials can commence, 3. Adequate and well-controlled human clinical trials to establish the safety and efficacy of the drug, 4. The submission of a New Drug Application or Product License Application to the FDA, and 5. FDA approval of the New Drug Application or Product License Application prior to any commercial sale or shipment of the drug. In addition to obtaining FDA approval for each product, each domestic drug manufacturing establishment must be registered with, and approved by, the FDA. Domestic manufacturing establishments are subject to biennial inspections by the FDA and must comply with the FDA's Good Manufacturing Practices for both drugs and devices. To supply products for use in the United States, foreign manufacturing establishments must comply with Good Manufacturing Practices and are subject to periodic inspection by the FDA or by regulatory authorities in such countries under reciprocal agreements with the FDA. Pre-clinical testing includes laboratory evaluation of product chemistry and formulation, as well as animal studies to assess the potential safety and efficacy of the product. Pre-clinical safety tests must be conducted by laboratories that comply with FDA regulations regarding Good Laboratory Practices. The results of the pre-clinical testing are submitted to the FDA as part of an IND and are reviewed by the FDA prior to the commencement of human clinical trials. Unless the FDA objects to an IND, the IND will become effective 30 days following its receipt by the FDA. Clinical trials involve the administration of the new drug to healthy volunteers or to patients under the supervision of a qualified principal investigator. Clinical trials must be conducted in accordance with Good Clinical Practices under protocols that detail the objectives of the study, the parameters to be used to monitor safety and the efficacy criteria to be evaluated. Each protocol must be submitted to the FDA as part of the IND. Further, each clinical study must be conducted under the auspices of an independent Institutional Review Board at the institution where the study will be conducted. The Institutional Review Board will consider, among other things, ethical factors, the safety of human subjects and the possible liability of the institution. Compounds must be formulated according to Good Manufacturing Practices. Clinical trials are typically conducted in three sequential phases, but the phases may overlap. In Phase I, the initial introduction of the drug into healthy human subjects, the drug is tested for safety (adverse side effects), absorption, dosage tolerance, metabolism, bio-distribution, excretion and pharmacodynamics (clinical pharmacology). Phase II typically involves studies in a limited patient population 1. to determine the efficacy of the drug for specific, targeted indications, 2. to determine dosage tolerance and optimal dosage, and 3. to identify possible adverse side effects and safety risks. When a compound is found to be effective and to have an acceptable safety profile in Phase II evaluations, Phase III trials are undertaken to further evaluate clinical efficacy and to test for safety within an expanded patient population at geographically dispersed clinical study sites. We or the FDA may suspend clinical trials at any time if it is believed that the individuals participating in such trials are being exposed to unacceptable health risks. The results of the pharmaceutical development, pre-clinical studies and clinical studies are submitted to the FDA in the form of a New Drug Application for approval of the marketing and commercial shipment of the drug. The testing and approval process is likely to require substantial time and effort. The approval process is affected by a number of factors, including the severity of the disease, the availability of alternative treatments and the risks and benefits demonstrated in clinical trials. Consequently, there can be no assurance that any approval will be granted on a timely basis, if at all. The FDA may deny a New Drug Application if applicable regulatory criteria are not satisfied, require additional testing or information or require post-marketing testing and surveillance to monitor the safety of a company's products if it does not believe the New Drug Application contains adequate evidence of the safety and efficacy of the drug. Notwithstanding the submission of such data, the FDA may ultimately decide that a New Drug Application does not satisfy its regulatory criteria for approval. Moreover, if regulatory approval of a drug is granted, such approval may entail limitations on the indicated uses for which it may be marketed. Finally, product approvals may be withdrawn if compliance with regulatory standards is not maintained or if problems occur following initial marketing. Among the conditions for New Drug Application approval is the requirement that any prospective manufacturer's quality control and manufacturing procedures conform to Good Manufacturing Practices. In complying with standards set forth in these regulations, manufacturers must continue to expend time, money and effort in the area of production and quality control to ensure full technical compliance. Manufacturing establishments, both foreign and domestic, also are subject to inspections by or under the authority of the FDA and by other federal, state or local agencies. Whether or not FDA approval has been obtained, approval of a product by regulatory authorities in foreign countries must be obtained prior to the commencement of commercial sales of the product in such countries. The requirements governing the conduct of clinical trials and product approvals vary widely from country to country, and the time required for approval may be longer or shorter than that required for FDA approval. Although there are some procedures for unified filings for certain European countries, in general, each country at this time has its own procedures and requirements. In addition to regulations enforced by the FDA, we are also subject to regulation under the Occupational Safety and Health Act, the Environmental Protection Act, the Toxic Substances Control Act, the Resource Conservation and Recovery Act and other present and potential future federal, state or local regulations. Our research and development involves the controlled use of hazardous materials, chemicals, and various low-level radioactive compounds. Although we believe that our safety procedures for handling and disposing of such materials comply with the standards prescribed by state and federal regulations, the risk of accidental contamination or injury from these materials cannot be completely eliminated. In the event of any accident, we could be held liable for any damages that result and any such liability could exceed our resources. Employees As of December 31, 2001, we had 200 full-time employees, of which 150 persons were scientists and, of these scientists, 64 had Ph.D. degrees. None of our employees are covered by collective bargaining agreements, and we consider relations with our employees to be good. Each of our current scientific personnel has entered into confidentiality and non-competition agreements with us. Research and Development Expenses We incurred research and development expenses of $34,494,000, $28,048,000, and $23,965,000 in 2001, 2000, and 1999, which exclude non-cash stock compensation charges of $901,000, $4,637,000 and $77,000, respectively. ITEM 2. PROPERTIES We conduct our operations in laboratory and administrative facilities on a single site located in Branford, Connecticut. The total facilities under our ownership comprise approximately 148,000 square feet, of which 106,000 square feet is in use by our personnel. Approximately 27,000 square feet has not yet been adapted for our research effort. In 1995, we leased approximately 24,000 square feet of a 39,000 square foot building under a ten-year agreement, which gave us an option to purchase the entire facility effective after the fifth year of the original term of the lease. In January 2001, we elected to purchase the entire facility for $2.4 million. The additional space acquired of approximately 15,000 square feet continues to be leased through us to the third-party tenants who occupied the facilities at the time of purchase. ITEM 3. LEGAL PROCEEDINGS We know of no material litigation or proceeding pending or threatened to which we are, or may become, a party. ITEM 4. SUBMISSION OF MATTERS TO A VOTE OF SECURITY HOLDERS None. CAUTIONARY STATEMENT FOR PURPOSES OF THE "SAFE HARBOR" PROVISIONS OF THE PRIVATE SECURITIES LITIGATION REFORM ACT OF 1995. Except for historical matters, the matters discussed in this Form 10-K are "forward-looking statements" within the meaning of the Private Securities Litigation Reform Act of 1995 or any rules, regulations or releases of the Securities and Exchange Commission with respect thereto. Forward-looking statements in this Form 10K include, but are not limited to, statements in Item 1 under the caption "Business--Neurogen Drug Programs" with respect to the Company's various product development programs and statements in Item 7 under the caption "Management's Discussion and Analysis of Financial Condition and Results of Operations" with respect to the sufficiency of the Company's cash balance to fund planned operations. In addition, the Company may from time to time make forward-looking statements in the future. Neurogen wishes to caution readers, and others to whom forward-looking statements are addressed, that any such forward-looking statements are not guarantees of future performance and that actual results may differ materially from estimates in the forward looking statements. In addition to the important factors described elsewhere in this Form 10-K and the Company's other filings with the Securities and Exchange Commission, the following important factors, among others, could affect Neurogen's actual future results and could cause such results to differ materially from estimates expressed in any forward-looking statements made by, or on behalf of, Neurogen: o Difficulties or delays in discovery, research, development, testing, regulatory approval, production and marketing of any of the Company's drug candidates, including without limitation any unanticipated pre- clinical or clinical delays, delays in regulatory approvals, the failure to develop follow-on candidates in a given program, the failure to attract or retain scientific and management personnel, adverse side effects or inadequate therapeutic efficacy or inadequate drug properties which could slow or prevent product development efforts at any stage of product development by delaying or preventing clinical trials, delaying or preventing regulatory approval for commercialization or adversely affecting acceptance by the market. o Vigorous competition within the Company's anticipated product markets, including without limitation competition from fully-integrated pharmaceutical companies, specialty biotechnology companies and platform technology companies, many or all of which may have substantially greater capabilities, experience and resources than the Company. o Risk that competitors will succeed in developing technologies (including drug discovery techniques) and products that are more effective than those of the Company or that are commercialized prior to similar technologies or products of the Company. o Neurogen's dependence on its corporate partners with respect to research and development funding, pre-clinical evaluation of drug candidates, human clinical trials of drug candidates, regulatory filings and manufacturing and marketing expertise with respect to most of its most advanced compounds. o Risk that Neurogen's interests will not coincide with those of its collaborators with respect to the timing or conduct of clinical development of compounds, the future production of developed products or strategies with respect to development and commercialization of such products. o Risk that actual research and development costs and associated general and administrative costs may exceed budgeted amounts for a variety of reasons, including the uncertainty of product development in the pharmaceutical industry. o Risk that drug targets pursued by the company may prove to be invalid after substantial investments by the Company. o Inability to obtain sufficient funds through future collaborative arrangements, technology transfers, equity or debt financings or other sources to continue the operation of the Company's business which may require the Company to reduce substantially or eliminate expenditures for product development or to relinquish rights to certain of its technologies or potential products. o Risk that the Company's patents and trade secrets and confidentiality agreements with collaborators, employees, consultants or vendors will be invalidated or not adequately protect the Company's intellectual property. o Uncertainty of the scope and enforceability of patents in the pharmaceutical and biotechnology industries which purport to enable competitors to restrict others from pursuing certain drug targets. o Risk that the Company may be prohibited or otherwise restricted from working on certain targets relevant to the Company's business. o The Company's dependence upon third parties for the manufacture of its potential products and the Company's inexperience in manufacturing if the Company establishes internal manufacturing capabilities, each of which could adversely affect the Company's future profit margins, if any, and its ability to develop and manufacture products on a timely and competitive basis. o Neurogen's dependence on third parties to market potential products and Neurogen's lack of sales and marketing capabilities, each of which could adversely affect the success of any sales and marketing efforts for the Company's products. o Unavailability or inadequacy of medical insurance or other third-party reimbursement for the cost of purchases of the Company's products. o Inability of the Company to attract and retain qualified management, employees and consultants. PART II ITEM 5. MARKET FOR REGISTRANT'S COMMON EQUITY AND RELATED STOCKHOLDER MATTERS The common stock of Neurogen is traded on The NASDAQ Stock Market under the symbol NRGN. As of March 1, 2002, there were approximately 237 holders of record of the Company's common stock. No dividends have been paid on the common stock to date, and the Company currently intends to retain any earnings for further development of the Company's business. The following table sets forth the high and low closing bid prices for the common stock as reported by NASDAQ. HIGH LOW ---- --- FISCAL 2001: First Quarter.................................................. $36.9375 $19.4688 Second Quarter................................................. 23.5938 18.3750 Third Quarter.................................................. 23.4375 13.5469 Fourth Quarter................................................. 22.5938 15.6094 FISCAL 2000: First Quarter.................................................. $47.3750 $15.6250 Second Quarter................................................. 30.8750 21.1250 Third Quarter.................................................. 38.7500 26.5625 Fourth Quarter................................................. 38.4375 25.9375 ITEM 6. SELECTED FINANCIAL DATA For the Year Ended December 31 (in thousands, except per share data) ----------------------------------------------------- 2001 2000 1999 1998 1997 -------- -------- -------- --------- --------- Total operating revenues....................... $ 11,514 $ 20,413 $ 10,209 $ 11,081 $ 17,979 Total operating expenses....................... $ 42,577 $ 40,858 $ 28,465 $ 24,834 $ 23,276 Net loss....................................... $(25,362) $(15,471) $(14,618) $ (9,458) $ (257) Net loss per share-basic and diluted........... $ (1.45) $ (0.94) $ (1.00) $ (.66) $ (.02) Total assets................................... $145,956 $142,588 $ 92,134 $101,810 $111,869 Long-term debt................................. $ 21,029 $ 1,912 $ 1,912 $ - $ 74 Stockholders' equity........................... $105,383 $126,120 $ 84,710 $ 98,567 $106,918 Weighted average number of shares outstanding- basic and diluted.............................. 17,441 16,490 14,576 14,419 14,348 ITEM 7. MANAGEMENT'S DISCUSSION AND ANALYSIS OF FINANCIAL CONDITION AND RESULTS OF OPERATIONS OVERVIEW Since its inception in September 1987, Neurogen has been engaged in the discovery and development of drugs. The Company has not derived any revenue from product sales and expects to incur significant losses in most years prior to deriving any such product revenues. Revenues to date have come from five collaborative research agreements, one license agreement and one technology transfer agreement. The preparation of Neurogen's financial statements in conformity with generally accepted accounting principles requires management to make certain estimates and assumptions that affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities at the date of the financial statements and the reported amounts of revenues and expenses during the reporting period. Management makes estimates in the areas of marketable securities and investments, license and research arrangements, income taxes, accruals and stock compensation. Actual results could differ from those estimates. The Company believes the following critical accounting policies affect management's more significant judgments and estimates used in the preparation of Neurogen's financial statements: Revenue Recognition Each of our collaborative research, licensing and technology transfer agreements are significant to us. The terms of such arrangements may cause our operating results to vary considerably from period to period. The Company has entered into collaborative research agreements which provide for the partial funding of specified projects in exchange for the grant of certain rights related to potential discoveries. Revenue under these arrangements typically includes upfront non-refundable fees, ongoing payments for specified levels of staffing for research and milestone payments upon occurrence of certain events. The upfront fees are generally recognized as revenue ratably over the period of performance under the research agreement. The research funding is recognized as revenue as the related research effort is performed. Revenue derived from the achievement of milestones is recognized when the milestone event occurs. Neurogen has also entered into technology transfer agreements under which revenue is recognized when a contractual arrangement exists, fees are fixed and determinable, delivery of the technology has occurred and collectibility is reasonably assured. When customer acceptance is required, revenue is deferred until acceptance occurs. Where there are on-going services or obligations after delivery, revenue is recognized over the related term of the service on a percentage of completion basis, unless such service is maintenance, which is recognized on a straight line basis. Generally, for a contract with multiple elements, total contract fees are allocated to the different elements based on evidence of fair value. Stock-Based Compensation Generally, the Company grants qualified stock options for a fixed number of shares to employees with an exercise price equal to the fair market value of the shares at the date of grant. The Company has also issued restricted stock to key executives which vest over specified service periods. The Company accounts for grants of stock options and restricted stock in accordance with APB Opinion No. 25, "Accounting for Stock Issued to Employees," and, accordingly, recognizes no compensation expense for such grants when the grants have an exercise price equal to the fair market value at the date of grant. Marketable Securities The Company invests in U.S. government and corporate debt securities. The fair value of these securities are subject to volatility and change. The Company considers its investment portfolio to be available-for-sale securities as defined in SFAS No. 115, "Accounting for Certain Investments in Debt and Equity Securities." Marketable securities at December 31, 2001 and 2000 consisted of debt securities with maturities of three months to four years. Securities are available-for-sale and are carried at fair value with the unrealized gains/losses reported as other comprehensive income. Realized gains and losses have been determined by the specific identification method and are included in investment income. RESULTS OF OPERATIONS Results of operations may vary from period to period depending on numerous factors, including the timing of income earned under existing or future strategic alliances, technology transfer agreements, joint ventures or financings, if any, the progress of the Company's research and development and technology transfer projects, technological advances and determinations as to the commercial potential of proposed products. Neurogen expects research and development costs to increase significantly over the next several years as its drug development programs progress. In addition, general and administrative expenses necessary to support the expanded research and development activities are generally expected to increase for the foreseeable future. YEARS ENDED DECEMBER 31, 2001, 2000 AND 1999 The Company's fiscal 2001 operating revenues decreased 44 percent to $11.5 million from 2000 operating revenues of $20.4 million, which was an increase from 1999 operating revenues of $10.2 million. The decrease in 2001 was primarily due to a decrease in research and development revenues resulting from a scheduled reduction in the Company's staffing on collaborative programs with Pfizer (the GABA and NPY programs described below) and the related reduction in discovery research funding. The recognition of license fees revenue pursuant to the Pfizer Technology Transfer Agreement (described below) also decreased in 2001. The increase in 2000 operating revenues was primarily due to the recognition of $11.2 million in license fees revenue under the Pfizer Technology Transfer Agreement offset by a slight decrease in research funding. Research and development expenses, excluding non-cash stock compensation charges, increased 23 percent to $34.5 million in 2001 as compared to 2000, and also increased 17 percent to $28.0 million in 2000 as compared to 1999. These increases are due to further development of potential drug candidates, as well as the Company's continued expansion of its AIDD (TM)(Accelerated Intelligent Drug Discovery) program for the discovery of new drug candidates. Research and development expenses represented 84 percent, 83 percent and 85 percent of total operating expenses (excluding non-cash stock compensation charges) for the years ended December 31, 2001, 2000 and 1999, respectively. General and administrative expenses, excluding non-cash stock compensation charges, increased 15 percent to $6.6 million in 2001 from $5.7 million in 2000 and 31 percent in 2000 from $4.4 million in 1999. These increases are attributed to additional administrative and technical services and personnel to support the protection of Neurogen's growing intellectual property estate and to support Neurogen's expanding research pipeline. Stock compensation expense, which is primarily composed of non-cash charges to income related to the grant of restricted stock and the modification of certain stock options, was $1.5 million in 2001, $7.1 million in 2000 and $0.1 million in 1999. Other income, consisting primarily of interest income from invested cash and marketable securities, was $4.5 million in 2001, $5.5 million in 2000 and $3.6 million in 1999. The differences in annual income are due primarily to varying levels of invested funds and available interest rates. For the year ended December 31, 2001, the Company recorded a Connecticut income tax benefit of $1.2 million in the Statement of Operations. This benefit is the result of recent Connecticut legislation, which allows certain companies to obtain cash refunds from the State of Connecticut at an exchange rate of 65% of their research and development credits in exchange for foregoing the carryfoward of these credits into future tax years. The Company recognized a net loss of $25.4 million for the year ended December 31, 2001, $15.5 million for the year ended December 31, 2000, and $14.6 million for the year ended December 31, 1999. The increase in the 2001 net loss is primarily due to the decrease in revenues and the increase in research and development and general and administrative expenses described above. The increase in the 2000 net loss from 1999 was to a non-recurring, non-cash $6.5 million charge recognized in the first quarter of 2000 upon the vesting of 137,625 shares of restricted stock granted to certain employees in 1998 and increases in research and development and general and administrative expenses, as explained above (net of a $0.5 million cumulative effect of change in accounting principle, as discussed below). These increases in expenses are partially offset by the recognition of $10.7 million in revenue under the Pfizer Technology Transfer Agreement (described below). In December 1999, the staff of the Securities and Exchange Commission issued its Staff Accounting Bulletin ("SAB") No. 101, Revenue Recognition in Financial Statements. SAB No. 101, as amended by SAB No. 101A and 101B, provides guidance on the measurement and timing of revenue recognition in financial statements of public companies. SAB No. 101 permits application of its guidance to be treated as a change in accounting principle in accordance with APB Opinion No. 20, Accounting Changes. The Company adopted the guidance of SAB No. 101 in the fourth quarter of 2000, retroactive to January 1, 2000, and reflected a cumulative effect of change in accounting principle on prior years of $0.5 million, related to timing of revenue recognition on certain non-refundable up-front payments previously recognized on a technology transfer agreement. LIQUIDITY AND CAPITAL RESOURCES At December 31, 2001 and 2000, cash, cash equivalents and marketable securities were in the aggregate $105.3 and $108.8 million, respectively. The Company's cash and other short-term investment levels decreased ratably throughout 2001 due primarily to the increase in research and development expenses, purchases of property, plant and equipment and the decrease in discovery research funding and license fees from Pfizer as described above. This decrease was offset by $17.5 million in proceeds from a commercial term mortgage loan financing completed in December 2001 and a $10.0 million license fee received under a collaboration and license agreement entered into with Aventis Pharmaceuticals Inc. ("Aventis"). A total amount of $42.4 million of the marketable securities at December 31, 2001 have maturities greater than one year; however, the Company can and may liquidate such investments prior to maturity to meet its strategic and/or investment objectives. The levels of cash, cash equivalents and marketable securities have fluctuated significantly in the past and are expected to do so in the future as a result of the factors described below. Neurogen's cash requirements to date have been met by the proceeds of its equity financing activities, amounts received pursuant to collaborative research, licensing or technology transfer arrangements, certain debt arrangements and interest earned on invested funds. The Company's equity financing activities have included underwritten public offerings of common stock, private placement offerings of common stock and private sales of common stock in connection with collaborative research and licensing agreements. Total funding received from these financing activities was approximately $146.6 million. The Company's expenditures have been primarily to fund research and development and general and administrative expenses and to construct and equip its research and development facilities. The debt agreements entered into by the Company to date include the commercial term mortgage loan financing in December 2001, mentioned above, and a construction loan entered into in October 1999. Total proceeds received under these agreements as of December 31, 2001, are $22.5 million. Of these amounts received, as of December 31, 2001, $22.4 million remained outstanding. An approximate aggregate amount of $1.4 million is due and payable in each of the next five years. Thereafter, approximately $15.4 million is payable in regular installments until the scheduled maturity dates. As of December 31, 2001, Neurogen is not engaged in any significant lease or capital expenditure commitments. The Company plans to use its cash, cash equivalents and marketable securities for its research and development activities, working capital and general corporate purposes. Neurogen anticipates that its current cash balance, as supplemented by research funding pursuant to its collaborative research, licensing and technology transfer agreements, will be sufficient to fund its current and planned operations through at least 2004. However, Neurogen's funding requirements may change and will depend upon numerous factors, including but not limited to, the progress of the Company's research and development programs, the timing and results of preclinical testing and clinical studies, the timing of regulatory approvals, technological advances, determinations as to the commercial potential of its proposed products, the status of competitive products and the ability of the Company to establish and maintain collaborative arrangements with others for the purpose of funding certain research and development programs, conducting clinical studies, obtaining regulatory approvals and, if such approvals are obtained, manufacturing and marketing products. Many of these factors could significantly increase the Company's expenses and use of cash. The Company anticipates that it may augment its cash balance through financing transactions, including the issuance of debt or equity securities and further corporate alliances. No assurances can be given that adequate levels of additional funding can be obtained on favorable terms, if at all. As of December 31, 2001, the Company had approximately $83.6 million and $6.1 million of net operating loss and research and development credit carryforwards, respectively, available for federal income tax purposes, which expire in the years 2004 through 2021. The Company also had approximately $73.3 million and $3.5 million of Connecticut state tax net operating loss and research and development credit carryforwards, respectively, which expire in the years 2002 through 2021. The Company has applied to exchange year 2000 Connecticut research and development credits for cash proceeds under new Connecticut tax law provisions (as mentioned above). Because of "change in ownership" provisions of the Tax Reform Act of 1986, the Company's utilization of its net operating loss and research and development credit carryforwards may be subject to an annual limitation in future periods. COLLABORATIVE RESEARCH AGREEMENTS In December 2001, Neurogen entered into a collaboration and license agreement with Aventis (the "Aventis Agreement") pursuant to which Aventis made an initial payment of $10 million and agreed, among other things, to fund a specified level of resources for at least three years for Neurogen's program for the discovery and research of CRF1 receptor-based drugs for a broad range of applications, including the therapeutic treatment of depression and anxiety disorders. Aventis has the option to extend the discovery and research effort for an additional two years. Neurogen is also eligible to receive milestone payments if certain compound discovery, product development or regulatory objectives are achieved subject to the collaboration. In return, Aventis received the exclusive worldwide rights to develop, manufacture and market collaboration drugs that act through the CRF1 receptor, with no limitations as to the therapeutic indications for which the drugs may be used. Aventis will pay Neurogen royalties based upon net sales levels, if any, for collaboration products. Also under the agreement, Aventis is responsible for funding the cost of development, including clinical trials, manufacturing and marketing of collaboration products, if any. In June 1999, Neurogen and Pfizer entered into a technology transfer agreement (the "Pfizer Technology Transfer Agreement"). Under the terms of this agreement, Pfizer has agreed to pay Neurogen a total of up to $27.0 million over a three year period for the licensing and transfer to Pfizer of certain of Neurogen's AIDD technologies for the discovery of new drugs, along with the installation of an AIDD system. Additional payments are also possible upon Pfizer's successful utilization of this technology. Pfizer has received a non-exclusive license for certain AIDD intellectual property and the right to employ this technology in its own drug development programs. As of December 31, 2001, Pfizer had provided $23.5 million in license fees pursuant to the Pfizer Technology Transfer Agreement. In 1992, Neurogen entered into a collaborative research agreement with Pfizer (the "1992 Pfizer Agreement") pursuant to which Pfizer made a $13.8 million equity investment in the Company and agreed, among other things, to fund a specified level of resources for up to five years (later extended as described below) for Neurogen's research programs for the discovery of GABA-based drugs for the treatment of anxiety and cognitive disorders. In 1994, Neurogen and Pfizer entered into a second collaborative research agreement (the "1994 Pfizer Agreement") pursuant to which Pfizer made a $9.9 million equity investment in the Company and agreed, among other things, to fund a specified level of resources for up to four years (later extended as described below) for Neurogen's research program for the development of GABA-based drugs for the treatment of sleep disorders. As of December 31, 2001, Pfizer had provided $43.2 million and $14.1 million of research funding to the Company and $0.5 million and $0.3 million for the achievement of certain clinical development and regulatory milestones pursuant to the 1992 and 1994 Pfizer Agreements and the extensions of such agreements, respectively. Neurogen is eligible to receive additional milestone payments of up to $12.0 million and $3.0 million under the 1992 and 1994 Pfizer Agreements, respectively, if certain development and regulatory objectives are achieved regarding its products subject to the collaboration. In return, under the two agreements, Pfizer received the exclusive rights to manufacture and market collaboration drugs that act through the GABA system for the treatment of anxiety, cognition enhancement, depression or insomnia. Pfizer will pay Neurogen royalties based upon net sales levels, if any, for such products. Under the agreements, Pfizer is responsible for funding the cost of all clinical development and the manufacturing and marketing, if any, of drugs developed from the collaborations. On three occasions, Neurogen and Pfizer extended Neurogen's research efforts under the 1992 and 1994 Pfizer Agreements. Pursuant to the extension agreements, which terminated in December 2001, Neurogen received $2.9 million in 2001 (which amount is included in the above-described cumulative totals received for the 1992 and 1994 Pfizer Agreements) for research and development funding of the Company's GABA-based anxiolytic, cognitive enhancer and sleep disorders projects. Recently Issued Accounting Pronouncements In August 2001, the Financial Accounting Standards Board issued SFAS No. 144, "Accounting for the Impairment or Disposal of Long-Lived Assets." SFAS No. 144 supercedes SFAS No. 121, "Accounting for the Impairment of Long-Lived Assets and for Long-Lived Assets to be Disposed Of," in that it excludes goodwill from its impairment scope and allows for different approaches in cash flow estimation. However, SFAS No. 144 retains the fundamental provisions of SFAS No. 121 for recognition and measurement of the impairment of (a) long-lived assets to be held and used and (b) long-lived assets to be disposed of other than by sale. Neurogen has not adopted the provisions of SFAS No. 144 as of December 31, 2001. However, the Company believes that the implementation of this standard will not have a material effect on its results of operations and financial position, since the impairment assessment under SFAS No. 144 is largely unchanged from SFAS No. 121 and management is not currently aware of any significant long-lived assets impaired or planned for disposal. ITEM 7A. QUANTITATIVE AND QUALITATIVE DISCLOSURES ABOUT MARKET RISK Interest rate risk. The Company's investment portfolio includes investment grade debt instruments. These securities are subject to interest rate risk, and could decline in value if interest rates fluctuate. Due to the short duration and conservative nature of these instruments, the Company does not believe that it has a material exposure to interest rate risk. Additionally, funds available from investment activities are dependent upon available investment rates. These funds may be higher or lower than anticipated due to interest rate volatility. Capital market risk. The Company currently has no product revenues and is dependent on funds raised through other sources. One source of funding is through further equity offerings. The ability of the Company to raise funds in this manner is dependent upon capital market forces affecting the stock price of the Company. ITEM 8. CONSOLIDATED FINANCIAL STATEMENTS AND SUPPLEMENTARY DATA INDEX TO CONSOLIDATED FINANCIAL STATEMENTS Consolidated Balance Sheets at December 31, 2001 and 2000 Consolidated Statements of Operations for the years ended December 31, 2001, 2000 and 1999 Consolidated Statements of Stockholders' Equity for the years ended December 31, 2001, 2000 and 1999 Consolidated Statements of Cash Flows for the years ended December 31, 2001, 2000 and 1999 Notes to Consolidated Financial Statements Report of Independent Accountants NEUROGEN CORPORATION CONSOLIDATED BALANCE SHEETS December 31 ------------------- 2001 2000 --------- --------- (In thousands) Assets Current Assets: Cash and cash equivalents........................................... $51,062 $48,086 Restricted cash..................................................... 1,500 - Marketable securities............................................... 54,237 60,670 Receivables from corporate partners................................. 1,554 1,517 Other current assets, net........................................... 3,027 1,364 --------- --------- Total current assets................................................. 111,380 111,637 Property, plant & equipment: Land, building and improvements..................................... 30,489 17,949 Equipment and furniture............................................. 16,162 14,213 Construction in progress............................................ 462 6,471 Leasehold improvements.............................................. - 4,026 --------- --------- 47,113 42,659 Less accumulated depreciation and amortization........................ 13,062 12,079 --------- --------- Net property, plant and equipment..................................... 34,051 30,580 Other assets, net..................................................... 525 371 --------- --------- Total assets.......................................................... $145,956 $142,588 ========= ========= See accompanying notes to consolidated financial statements NEUROGEN CORPORATION CONSOLIDATED BALANCE SHEETS--(Continued) December 31 ------------------- 2001 2000 --------- --------- (In thousands, except per share data) Liabilities and Stockholders' Equity Current Liabilities: Accounts payable and accrued expenses............................... $ 3,595 $ 5,014 Unearned revenue from corporate partners, current portion........... 6,699 9,542 Current portion of loans payable.................................... 1,365 - --------- --------- Total current liabilities............................................. 11,659 14,556 Unearned revenue from corporate partners, net of current portion...... 7,885 - Loans payable, net of current portion................................. 21,029 1,912 --------- --------- Total liabilities..................................................... 40,573 16,468 Commitments and Contingencies Stockholders' Equity: Preferred stock, par value $.025 per share; authorized 2,000 shares; none issued......................................................... - - Common stock, par value $.025 per share; authorized 30,000 shares; issued and outstanding 17,733 shares in 2001 and 17,386 shares in 2000............................................................... 443 434 Additional paid-in capital.......................................... 174,709 169,440 Accumulated deficit................................................. (67,685) (42,323) Deferred compensation............................................... (2,750) (1,706) Accumulated other comprehensive income.............................. 666 275 --------- --------- Total stockholders' equity............................................ 105,383 126,120 --------- --------- Total liabilities and stockholders' equity............................ $145,956 $142,588 ========= ========= See accompanying notes to consolidated financial statements NEUROGEN CORPORATION CONSOLIDATED STATEMENTS OF OPERATIONS For the Years Ended December 31 --------------------------------- 2001 2000 1999 ----------- ---------- ---------- (In thousands, except per share data) Operating revenues: License fees............................................ $ 8,458 $11,208 $ 500 Research and development................................ 3,056 9,205 9,709 ----------- --------- --------- Total operating revenues................................ 11,514 20,413 10,209 Operating expenses: Research and development: Stock compensation.................................... 901 4,637 77 Other research and development........................ 34,494 28,048 23,965 ----------- --------- --------- Total research and development......................... 35,395 32,685 24,042 General and administrative: Stock compensation ................................... 601 2,456 51 Other general and administrative...................... 6,581 5,717 4,372 ---------- ---------- --------- Total general and administrative....................... 7,182 8,173 4,423 ---------- ---------- --------- Total operating expenses................................ 42,577 40,858 28,465 ---------- ---------- --------- Operating loss.......................................... (31,063) (20,445) (18,256) Other income (expense): Investment income....................................... 4,604 5,474 3,639 Interest expense........................................ (114) - (1) ---------- ---------- --------- Total other income, net................................. 4,490 5,474 3,638 Net loss before income taxes............................ (26,573) (14,971) (14,618) Income tax benefit...................................... 1,211 - - ---------- ---------- --------- Net loss before cumulative effect of change in accounting principle ................................... (25,362) (14,971) (14,618) ---------- ---------- --------- Cumulative effect on prior years of the application of SAB No.101, "Revenue Recognition in Financial Statements" - (500) - ---------- ---------- --------- Net loss ............................................... $(25,362) $(15,471) $(14,618) ========== ========== ========= Basic and diluted loss per share: Before cumulative effect of change in accounting principle ............................................ $ (1.45) $ (0.91) $ (1.00) Change in accounting principle ....................... - (0.03) - ---------- ---------- --------- Basic and diluted loss per share ....................... $ (1.45) $ (0.94) $ (1.00) ========== ========== ========= Shares used in calculation of loss per share: Basic and diluted....................................... 17,441 16,490 14,576 ========== ========== ========= See accompanying notes to consolidated financial statements NEUROGEN CORPORATION CONSOLIDATED STATEMENTS OF STOCKHOLDERS' EQUITY For the Years Ended December 31, 2001, 2000 and 1999 (in thousands) -------------------------------------------------------------------------- Accumulated Additional Other Common Stock Paid-in Accumulated Deferred Comprehensive Shares Amount Capital Deficit Compensation Income Total ------- ------ ---------- ----------- ------------ ------------- -------- Balance at December 31, 1998.................... 14,656 $366 $113,901 $(12,234) $(3,540) $74 $98,567 Forfeiture of restricted stock.................. (7) - (131) - 131 - - Deferred compensation .......................... - - (204) - 333 - 129 Exercise of stock options....................... 126 3 600 - - - 603 Stock issued in 401(k) match.................... 25 1 353 - - - 354 Comprehensive income: Net loss...................................... - - - (14,618) - - (14,618) Unrealized loss on marketable securities...... - - - - - (325) (325) ------- ------ ---------- ----------- ------------ ------------- -------- Balance at December 31, 1999.................... 14,800 370 114,519 (26,852) (3,076) (251) 84,710 Stock issued in private placements, net of offering expenses............................. 1,638 41 38,657 - - - 38,698 Deferred compensation .......................... - - 5,523 - 1,370 - 6,893 Issuance of stock options....................... - - 200 - - - 200 Exercise of stock options ...................... 899 22 10,010 - - - 10,032 Stock issued in 401(k) match ................... 13 - 436 - - - 436 Exercise of warrants............................ 36 1 95 - - - 96 Comprehensive income: Net loss...................................... - - - (15,471) - - (15,471) Unrealized gain on marketable securities ..... - - - - - 526 526 ------- ------ ---------- ---------- ------------ ------------- --------- Balance at December 31, 2000.................... 17,386 434 169,440 (42,323) (1,706) 275 126,120 Issuance of restricted stock.................... 150 4 2,905 - (2,909) - 0 Deferred compensation........................... - - (1,392) - 1,865 - 473 Modification to and issuance of stock options... - - 1,029 - - - 1,029 Exercise of stock options....................... 171 4 1,439 - - - 1,443 Income tax benefits from stock option exercises. - - 765 - - - 765 Stock issued in 401(k) match ................... 26 1 523 - - - 524 Comprehensive income: Net loss...................................... - - - (25,362) - - (25,362) Unrealized gain on marketable securities...... - - - - - 391 391 ------- ------ ---------- ---------- ------------ ------------- --------- Balance at December 31, 2001.................... 17,733 $443 $174,709 $(67,685) $(2,750) $666 $105,383 ======= ====== ========== ========== ============ ============= ========= See accompanying notes to consolidated financial statements NEUROGEN CORPORATION CONSOLIDATED STATEMENTS OF CASH FLOWS For the Years ended December 31 -------------------------------- 2001 2000 1999 ---------- ---------- ---------- (In thousands) Cash flows from operating activities: Net loss........................................................ $(25,362) $(15,471) $(14,618) Adjustments to reconcile net loss to net cash (used in) provided by operating activities: Depreciation and amortization expense........................... 2,735 2,762 2,608 Stock compensation expense ..................................... 1,502 7,093 129 Noncash compensation and other expense.......................... 898 517 459 Loss on disposal of assets...................................... 21 141 33 Changes in operating assets and liabilities: (Decrease) increase in accounts payable and accrued expenses... (1,418) 2,309 (155) Increase in unearned revenue from corporate partners........... 5,042 6,782 2,500 (Increase) decrease in receivables from corporate partners..... (36) (1,231) 369 (Increase) decrease in other assets, net....................... (1,999) (664) 331 Income tax benefits from exercise of stock options.............. 765 - - ---------- ---------- ---------- Net cash (used in)provided by operating activities.............. (17,852) 2,238 (8,344) ---------- ---------- ---------- Cash flows from investing activities: Purchases of plant and equipment................................ (6,257) (7,899) (3,753) Purchases of marketable securities.............................. (74,623) (56,230) (35,629) Maturities and sales of marketable securities................... 81,253 29,580 50,806 Proceeds from sales of assets................................... 30 31 - ---------- ---------- ---------- Net cash provided by (used in)investing activities.............. 403 (34,518) 11,424 ---------- ---------- ---------- Cash flows from financing activities: Proceeds from issuance of debt.................................. 20,588 - 1,912 Change in restricted cash....................................... (1,500) - - Principal payments under loans payable.......................... (106) - (73) Exercise of warrants and employee stock options................. 1,443 10,080 603 Proceeds from private placement of common stock ................ - 38,698 - ---------- ---------- ---------- Net cash provided by financing activities....................... 20,425 48,778 2,442 ---------- ---------- ---------- Net increase in cash and cash equivalents....................... 2,976 16,498 5,522 Cash and cash equivalents at beginning of year.................. 48,086 31,588 26,066 ---------- ---------- ---------- Cash and cash equivalents at end of year........................ $51,062 $48,086 $31,588 ========== ========== ========== See accompanying notes to consolidated financial statements NEUROGEN CORPORATION NOTES TO CONSOLIDATED FINANCIAL STATEMENTS 1. SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES BUSINESS--Neurogen Corporation ("Neurogen" or the "Company") is a company engaged in the discovery and development of new drugs for a broad range of pharmaceutical uses. Neurogen is focused on discovering new small molecule drugs (i.e. drugs which can be taken as a pill) for large market disorders where existing therapies achieve limited therapeutic effects or produce unsatisfactory side effects. The Company has not derived any revenue from product sales to date. USE OF ESTIMATES--The preparation of financial statements in conformity with generally accepted accounting principles requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities at the date of the financial statements and the reported amounts of revenues and expenses during the reporting period. Management makes estimates in the areas of investments, license and research arrangements, income taxes, accruals and stock compensation. Actual results could differ from those estimates. CASH EQUIVALENTS AND MARKETABLE SECURITIES--The Company considers cash equivalents to be only those investments which are highly liquid, readily convertible to cash and which mature within three months from date of purchase. The carrying values of cash equivalents at December 31, 2001 and 2000 were approximately $50,774,000 and $47,121,000, respectively. The Company considers its investment portfolio to be available-for-sale securities as defined in SFAS No. 115. Marketable securities at December 31, 2001 and 2000 consist of debt securities with maturities of three months to four years. Securities are available for sale and are carried at fair value with the unrealized gains/losses reported as other comprehensive income. Realized gains and losses have been determined by the specific identification method and are included in investment income. The Company recognized gross realized gains of $103,000, $84,000 and $15,000 in 2001, 2000 and 1999, respectively. Gross realized losses were $6,000, $69,000, and $108,000 in 2001, 2000 and 1999, respectively. PROPERTY, PLANT AND EQUIPMENT--Property, plant and equipment are stated at cost. Depreciation is provided using the straight-line method over the estimated useful lives of the assets, which are as follows: Equipment and furniture............3 to 7 years Leasehold improvements.............Shorter of life of lease or 10 years Building, building improvements, building renovations and land improvements.......................7 to 40 years REVENUE RECOGNITION--The Company has entered into collaborative research agreements which provide for the partial funding of specified projects in exchange for the grant of certain rights related to discoveries. Revenue under these arrangements typically includes upfront non-refundable fees, ongoing payments for specified levels of staffing for research and milestone payments upon the occurrence of certain events. Since the adoption of SAB No. 101, the upfront fees are generally recognized as revenue ratably over the period of performance under the research agreement. The research funding is recognized as revenue as the related research effort is performed. Revenue derived from the achievement of milestones is recognized when the milestone event occurs. Neurogen has also entered into technology transfer agreements under which revenue is recognized when a contractual arrangement exists, fees are fixed and determinable, delivery of the technology has occurred and collectibility is reasonably assured. When customer acceptance is required, revenue is deferred until acceptance occurs. Where there are on-going services or obligations after delivery, revenue is recognized over the related term of the service on a percentage of completion basis, unless such obligation is maintenance, which is recognized on a straight line basis. Generally, for a contract with multiple elements, total contract fees are allocated to the different elements based on evidence of fair value. Revenue resulting from up-front non-refundable fees under collaborative research agreements and all fees under technology transfer agreements is recorded as License Fees revenue for purposes of the financial statements. Research funding for the Company's staffing on projects and milestone payments under collaborative agreements are recorded as Research and Development revenues. Deferred revenue arises from the payments received for research and development to be conducted in future periods or for licenses of Neurogen's rights or technology where Neurogen has continuing involvement. In December 1999, the staff of the Securities and Exchange Commission issued SAB No. 101, Revenue Recognition in Financial Statements. SAB No. 101, as amended by SAB No. 101A and 101B, provides guidance on the measurement and timing of revenue recognition in financial statements of public companies. SAB No. 101 permits application of its guidance to be treated as a change in accounting principle in accordance with APB Opinion No. 20, Accounting Changes. The Company adopted the guidance of SAB No. 101 in the fourth quarter of 2000, retroactive to January 1, 2000 and reflected a cumulative effect of the change in accounting principle on prior years of $500,000, related to timing of revenue recognition on certain non-refundable up-front payments previously recognized on a technology transfer agreement. PRINCIPLES OF CONSOLIDATION--The consolidated financial statements include the accounts of the parent company and a subsidiary, Neurogen Properties LLC, after elimination of intercompany transactions. SEGMENT INFORMATION--Statement of Financial Accounting Standards No. 131, Disclosures about Segments of an Enterprise and Related Information (SFAS No. 131), requires that an enterprise report financial and descriptive information about each of its reportable operating segments. The management approach designates the internal organization that is used by management for making operating decisions and assessing performance as the source of the Company's reportable segments. The Company operates in one segment: drug discovery and pharmaceutical development. STOCK-BASED COMPENSATION--Generally, the Company grants qualified stock options for a fixed number of shares to employees with an exercise price equal to the fair market value of the shares at the date of grant. The Company has also issued restricted stock to key executives which vest over specified service periods. The Company accounts for grants of stock options and restricted stock in accordance with APB Opinion No. 25, "Accounting for Stock Issued to Employees," and, accordingly, recognizes no compensation expense for such grants when the grants have an exercise price equal to the fair market value at date of grant. The Company has adopted the disclosure only provisions of Statement of Financial Accounting Standards ("SFAS") No. 123, "Accounting for Stock-Based Compensation". RECENT PRONOUNCEMENTS--In July 2001, the Financial Accounting Standards Board issued SFAS No. 141, "Business Combinations," and SFAS No. 142, "Goodwill and Other Intangible Assets." SFAS No. 141 requires that the purchase method of accounting be used for all business combinations initiated or completed after June 30, 2001. SFAS No. 141 also specifies criteria that intangible assets acquired in a purchase business combination must meet to be recognized and reported apart from goodwill. SFAS No. 142 requires that goodwill and intangible assets with indefinite useful lives no longer be amortized, but instead be tested for impairment at least annually. SFAS No. 142 also requires that intangible assets with definite useful lives be amortized over their respective useful lives to their estimated residual values, and reviewed for impairment in accordance with SFAS No. 121, "Accounting for the Impairment of Long-Lived Assets and for Long-Lived Assets to Be Disposed Of," which is superceded by SFAS No. 144 as discussed below. The Company has not been a party to any business combinations to date and no intangible assets exist as of December 31, 2001. Therefore, the adoptions of SFAS No. 141 and SFAS No. 142 did not have any impact on the Company's 2001 financial statements. In August 2001, the Financial Accounting Standards Board issued SFAS No. 144, "Accounting for the Impairment or Disposal of Long-Lived Assets." SFAS No. 144 supercedes SFAS No. 121, "Accounting for the Impairment of Long-Lived Assets and for Long-Lived Assets to be Disposed Of," in that it excludes goodwill from its impairment scope and allows for different approaches in cash flow estimation. However, SFAS No. 144 retains the fundamental provisions of SFAS No. 121 for recognition and measurement of the impairment of (a) long-lived assets to be held and used and (b) long-lived assets to be disposed of other than by sale. Neurogen has not adopted the provisions of SFAS No. 144 as of December 31, 2001. However, the Company believes that the implementation of this standard will not have a material effect on its results of operations and financial position, since the impairment assessment under SFAS No. 144 is largely unchanged from SFAS No. 121 and management is not currently aware of any significant long-lived assets impaired or planned for disposal. INCOME TAXES--The liability method is used to account for income taxes. Deferred tax assets and liabilities are determined based on differences between financial reporting and income tax bases of assets and liabilities as well as net operating loss carryforwards and are measured using the enacted tax rates and laws that are expected to be in effect when the differences reverse. Deferred tax assets may be reduced by a valuation allowance to reflect the uncertainty associated with their ultimate realization. EARNINGS (LOSS) PER SHARE--Basic EPS is calculated by dividing income or loss attributable to common stockholders by the weighted average common shares outstanding. Diluted EPS is calculated by adjusting weighted average common shares outstanding by assuming conversion of all potentially dilutive shares. In periods where a net loss is recorded, no effect is given to potentially dilutive securities, since the effect would be antidilutive. FAIR VALUE OF FINANCIAL INSTRUMENTS--The carrying value of long-term debt approximates its fair value based upon currently available debt instruments having similar interest rates and maturities. The carrying amounts of the Company's other financial instruments approximate their fair value. RECLASSIFICATIONS--Certain reclassifications have been made to the 1999 and 2000 financial statements in order to conform to the 2001 presentation. 2. CORPORATE PARTNER AGREEMENTS AVENTIS - ------- In December 2001, Neurogen entered into a collaboration and license agreement with Aventis (the "Aventis Agreement") pursuant to which Aventis made an initial payment of $10 million and agreed, among other things, to fund a specified level of resources for at least three years for Neurogen's program for the discovery and research of CRF1 receptor-based drugs for a broad range of applications, including the therapeutic treatment and prevention of anxiety and depression disorders. Aventis has the option to extend the discovery and research effort for an additional two years. Neurogen is also eligible to receive milestone payments if certain compound discovery or product development or regulatory objectives are achieved subject to the collaboration. In return, Aventis received the exclusive worldwide rights to develop, manufacture and market collaboration drugs that act through the CRF1 receptor, with no limitations as to the indications for which the drugs may be used. Aventis will pay Neurogen royalties based upon net sales levels, if any, for collaboration products. Also under the agreement, Aventis is responsible for funding the cost of development, including clinical trials, manufacturing and marketing of collaboration products, if any. For the year ended December 31, 2001, the Company recognized $291,000 in revenue under the Aventis Agreement. PFIZER - ------ In June of 1999, Neurogen and Pfizer entered into a technology transfer agreement (the "Pfizer Technology Transfer Agreement"). Under the terms of this agreement, Pfizer has agreed to pay Neurogen up to a total of $27,000,000 over a three year period for the licensing and transfer to Pfizer of certain of Neurogen's AIDD (Accelerated Intelligent Drug Discovery) technologies for the discovery of new drugs, along with the installation of an AIDD(TM) system. Additional payments are also possible upon Pfizer's successful utilization of this technology. Pfizer has received a non-exclusive license to certain AIDD intellectual property, and the right to employ this technology in its own drug development programs. As of December 31, 2001, the company had received $23,500,000 in license fees pursuant to the Pfizer AIDD agreement of which $8,343,000 and $11,208,000 has been recognized as revenue in 2001 and 2000, respectively. Remaining revenues associated with amounts received under the Pfizer Technology Transfer Agreement will be recognized in future periods and may fluctuate significantly depending on the timing and completion of the Company's transfer of technology and systems pursuant to the agreement. In 1995, Neurogen and Pfizer entered into a collaborative agreement (the "1995 Pfizer Agreement") pursuant to which Pfizer made an equity investment of $16,500,000 in the Company, paid a license fee of $3,500,000 and agreed, among other things, to fund a specified level of resources for Neurogen's research program for the discovery of drugs which work through the neuropeptide Y (NPY) mechanism for the treatment of obesity and other disorders. In October 2000, Neurogen and Pfizer concluded the research phase of their NPY-based collaboration according to schedule and the annual research funding received from Pfizer came to its scheduled conclusion on October 31, 2000. Pursuant to the 1995 Pfizer Agreement, Neurogen received total research funding of $13,740,000, of which approximately $2,340,000 and $3,120,000 was received in 2000 and 1999, respectively, and $2,600,000 and $3,120,000 was recognized in revenue in 2000 and 1999, respectively. Should Pfizer in the future elect to continue the development of any drug candidates subject to collaboration, Neurogen could also receive development and regulatory milestone payments and would be entitled to royalty, profit sharing and manufacturing rights. In 1992, Neurogen entered into a collaborative research agreement with Pfizer (the "1992 Pfizer Agreement") pursuant to which Pfizer made an equity investment of $13,750,000 in the Company and agreed, among other things, to fund a specified level of resources for up to five years (later extended as described below) for Neurogen's research programs for the discovery of GABA-based drugs for the treatment of anxiety and cognitive disorders. In 1994, Neurogen and Pfizer entered into a second collaborative research agreement (the "1994 Pfizer Agreement") pursuant to which Pfizer made an additional equity investment of $9,864,000 in the Company and agreed, among other things, to fund a specified level of resources for up to four years (later extended as described below) for Neurogen's research program for the development of GABA-based drugs for the treatment of sleep disorders. As of December 31, 2001, Pfizer had provided total research funding of $43,165,000 and $14,108,000 to the Company and payments of $500,000 and $250,000 for the achievement of certain clinical development and regulatory milestones pursuant to the 1992 and 1994 Pfizer Agreements and the extensions of such agreements, respectively, all of which has been recognized as revenue. Neurogen is eligible to receive additional milestone payments of up to $12,000,000 and $3,000,000 under the 1992 and 1994 Pfizer Agreements, respectively, if certain development and regulatory objectives are achieved regarding its products subject to the collaboration. In return, under the two agreements, Pfizer received the exclusive rights to manufacture and market collaboration drugs that act through the GABA system for the treatment of anxiety, cognition enhancement, depression or insomnia. Pfizer will pay Neurogen royalties based upon net sales levels, if any, for such products. Under the agreements, Pfizer is responsible for funding the cost of all clinical development and the manufacturing and marketing, if any, of drugs developed from the collaborations. On three occasions, Neurogen and Pfizer extended Neurogen's research efforts under the 1992 and 1994 Pfizer Agreements. Pursuant to the extension agreements, which terminated in December 2001, Neurogen has received and recognized in revenue $2,880,000, $6,240,000 and $6,240,000 in each of 2001, 2000 and 1999, respectively (which amount is included in the above-described cumulative totals received for the 1992 and 1994 Pfizer Agreements) for research and development funding of the Company's GABA-based anxiolytic, cognitive enhancer and sleep disorders projects. 3. MARKETABLE SECURITIES The following tables summarize the company's marketable securities (in thousands). December 31, 2001 Gross Gross Amortized Unrealized Unrealized Fair Value Cost Gains Loss ----------- ---------- ---------- ----------- U.S. Government notes................ $22,322 $466 $ (9) $22,779 Corporate notes and bonds............ 31,249 218 (9) 31,458 ----------- ---------- ---------- ----------- Total $53,571 $684 $(18) $54,237 =========== ========== ========== =========== December 31, 2000 Gross Gross Amortized Unrealized Unrealized Fair Value Cost Gains Loss ---------- ---------- ---------- ----------- U.S. Government notes................ $23,586 $126 $(42) $23,670 Corporate notes and bonds............ 36,809 203 (12) 37,000 ----------- ---------- ---------- ----------- Total $60,395 $329 $(54) $60,670 =========== ========== ========== =========== The following table summarizes investment maturities at December 31, 2001 (in thousands). Amortized Cost Fair Value -------------- ----------- Less than one year.............. $11,769 $11,820 Due in 1 to 4 years............. 41,802 42,417 -------------- ---------- $53,571 $54,237 ============== =========== 4. ACCOUNTS PAYABLE AND ACCRUED EXPENSES Accounts payable and accrued expenses at December 31 are summarized as follows (in thousands): 2001 2000 ------ ------ Accounts payable...........$2,211 $3,750 Accrued compensation....... 1,384 1,213 Other...................... - 51 ------ ------ $3,595 $5,014 ====== ====== 5. LOANS PAYABLE On December 21, 2001, Neurogen entered into a commercial term mortgage loan agreement secured by the Company's facilities at 15 and 35 Northeast Industrial Road, Branford, CT, whereby the lender provided total gross proceeds of $17,500,000. The Company expects to use these proceeds for general corporate purposes. The loan is repayable in monthly principal installments of approximately $97,000 over 10 years plus interest at a floating rate tied to the one month LIBOR rate . A final balloon payment of all remaining principal is due and payable on the maturity date of December 21, 2011. Neurogen is required to maintain $1,000,000 of the mortgage proceeds in a cash collateral account as security for the loan until the outstanding principal balance reaches $16,500,000. Another $500,000 of the proceeds are being held in another cash collateral account until Neurogen completes specified, committed site work at the secured property. These two conditions are expected to be met within the next year. This $1,500,000 of total proceeds is classified as restricted cash in current assets. In October of 1999, Neurogen entered into a financing arrangement with Connecticut Innovations, Inc. (CII) secured by the property at 45 Northeast Industrial Road, whereby CII agreed to loan up to $5,000,000 to Neurogen for the purchase and development of a new building to create additional laboratory space. CII advanced Neurogen $1,912,280 for the purchase of the building in October 1999. The remainder of the loan was advanced when renovation was substantially completed in July 2001. The loan is repayable in monthly installments of approximately $46,500 over 15 years, bearing interest at an annual rate of 7.5%. Total interest payments capitalized during the building construction approximated $111,000 in 2001, $155,000 in 2000 and $28,000 in 1999. Scheduled maturities of total loans payable at December 31, 2001 are: (In thousands) - -------------------------- 2002 $1,365 2003 1,380 2004 1,396 2005 1,414 2006 1,433 Thereafter 15,406 ------- $22,394 ======= In 1995, the Company entered into a ten year operating lease agreement to lease 24,000 square feet of space at 15 Northeast Industrial Road. The Company had an option to purchase the building after the fifth year of the lease which it exercised on January 11, 2001 for $2,437,500, thereby terminating the lease. Unamortized leasehold improvement costs were capitalized into the cost basis of the building at time of purchase. Prior to the purchase, rent expense approximated $4,000, $140,000 and $140,000 in 2001, 2000 and 1999, respectively. 6. COMMON STOCK On June 30, 2000, the Company entered into a private placement agreement with certain institutional investors, pursuant to which the Company issued 1,638,000 shares of its common stock for net proceeds of $38,698,000. 7. STOCK OPTIONS, WARRANTS AND RESTRICTED STOCK The Company has various stock incentive plans, under which it has awarded incentive and non-qualified stock options and restricted stock. Stock options are generally granted at fair market value at the date of grant, vest over one to five years and expire up to ten years after grant. Under all plans, there were 6,179,952 shares of common stock reserved for future issuance (of which 4,600,568 are for options outstanding and 1,579,384 are for options available for future grant) as of December 31, 2001. Options - ------- The following table presents the combined activity of its stock option plans for the years ended December 31, as follows: 2001 2000 1999 ---------------------------- -------------------------- ------------------------ Weighted Weighted Weighted Average Average Average Exercise Exercise Exercise Options Price Options Price Options Price ------------ -------- ------------ -------- ------------ -------- Outstanding at January 1............ 3,702,588 $19.49 3,940,844 $14.91 3,680,880 $14.55 Granted............................. 1,199,290 16.85 755,540 33.22 491,712 15.75 Exercised........................... (181,376) 8.02 (901,377) 11.18 (147,492) 6.44 Canceled............................ (119,934) 24.54 (92,419) 17.09 (84,256) 18.69 ------------ -------- ------------ -------- ------------ -------- Outstanding at December 31...... 4,600,568 $19.13 3,702,588 $19.50 3,940,844 $14.91 ============ ======== ============ ======== ============ ======== Options exercisable at December 31.. 2,538,702 $17.90 2,086,033 $15.98 2,419,722 $13.60 With respect to certain options for 31,250 shares granted on December 31, 1997, if the recipient remains employed with the Company for a period of seven years from the date of grant, the exercise price for any of such options which have not been exercised at the end of the ten year term of such option, shall become zero and the options will be exercised and the shares will be conveyed to the respective optionees. The exercise price for any of such options exercised prior to the end of such ten-year term shall be $13.50 per share, the market price of the common stock on the date of grant. These options are subject to variable plan accounting and the deferred compensation is being amortized over the seven year service period required for these options to vest. The unamortized balance related to this grant at December 31, 2001 was $234,000. The Company recognized stock compensation expense of $57,000, $356,000 and $128,000 for 2001, 2000 and 1999, respectively, relating to these options. The Company recorded $23,000 and $34,000 as compensation expense for grants made prior to shareholder approval of the respective option plan and $52,000 and $200,000 as expense for option grants made to consultants in 2001 and 2000, respectively. In addition, $977,000 was recorded as expense in 2001 for modification to stock options made upon termination of employment of two former officers. The modifications included acceleration of vesting for one officer and extension of expiration after termination of employment for the other officer. The following table presents weighted average price and life information about significant option groups outstanding at December 31, 2001: Weighted Weighted Average Average Average Range of Number Contractual Exercise Number Exercise Exercise Prices Outstanding Life (Yrs.) Price Exercisable Price - ------------------- ----------- ----------- -------- ----------- -------- Less than $9.99.... 595,226 4.2 $5.03 455,226 $6.57 $10.00-$19.99...... 2,612,831 6.7 17.01 1,300,486 16.34 $20.00-$29.99...... 782,882 5.4 24.58 605,275 24.86 $30.00-$39.99...... 609,629 7.0 34.96 177,715 34.60 ----------- ----------- 4,600,568 2,538,702 =========== =========== Restricted Stock - ---------------- In 1998, 137,625 shares of restricted stock were granted to certain employees. The grant stipulated that if the stock price closed at or above $45.00 per share within four years from the date of such grant the restriction would be removed and the stock would fully vest to the employee with no restriction. If the Company's stock price did not reach $45.00 the shares would be forfeited. On February 18, 2000, Neurogen stock closed the trading day at 47.25, thereby removing the restriction and vesting the stock immediately. A charge to income of $6,503,000 was recorded in the first quarter of 2000. In September 2001, 150,000 shares of restricted stock were granted to certain officers. Of the total shares granted, 10,000 shares vested immediately, 70,000 shares vest in four years and 70,000 shares vest in five years. In connection with this grant, the Company recorded deferred compensation totaling $2,909,000. The portion of the compensation associated with the shares that vested immediately was recognized as expense while the remaining deferred compensation is being amortized ratably over the five year service period. A total of $392,000 was recorded as compensation expense in 2001. Warrants - -------- In 2000, 36,266 warrants to purchase common stock were exercised at $2.55 per share. Such warrants were issued in 1991 to a prior lessor of furniture and equipment. At December 31, 2001 and 2000, there were no outstanding warrants. As of December 31, 2001 compensation expense has not been recognized for the stock option plans, except as noted above. Had compensation cost for the Company's stock option plans been determined based on the fair value at the grant date for awards in 2001, 2000 and 1999 consistent with the provisions of SFAS No. 123, the Company's net loss and loss per share would have been adjusted to the pro forma amounts indicated below (in thousands, except per share data): 2001 2000 1999 --------- --------- --------- Net loss as reported......................... $(25,362) $(15,471) $(14,618) Net loss pro forma........................... (36,595) (21,730) (20,384) Diluted loss per share as reported........... (1.45) (.94) (1.00) Diluted loss per share-pro forma............. (2.10) (1.32) (1.40) The estimated fair value at the date of grant for options granted in 2001, 2000 and 1999 was $12.81, $21.87 and $9.09, respectively, using the Black-Scholes model with the following weighted average assumptions: 2001 2000 1999 ------- ------- ------- Expected life............... 5 5 5 Interest rate............... 4.4% 5.2% 6.2% Volatility.................. 80% 77% 68% Expected dividend yield..... 0% 0% 0% As additional options are expected to be granted in future years and as the options vest over several years, the above pro forma results are not necessarily indicative of future pro forma results. 8. INCOME TAXES The difference between the Company's "expected" tax provision (benefit), as computed by applying the U.S. federal corporate tax rate of 34% to income (loss) before provision for income taxes, and actual tax is reconciled below (in thousands): 2001 2000 1999 --------- --------- --------- Expected tax benefit at 34%................................... $(9,035) $(5,260) $(4,919) State tax benefit net of federal benefit...................... (3,013) (766) (762) R & D credit.................................................. (2,408) (1,613) (1,421) Expiring loss carry forward................................... - - 346 State tax rate change ........................................ - - 240 Other......................................................... 130 15 2 Change in valuation allowance................................. 13,115 7,624 6,514 --------- --------- --------- Tax benefit................................................... $(1,211) $ - $ - ========= ========= ========= The tax effect of temporary differences that give rise to significant portions of the deferred tax assets and deferred tax liabilities at December 31, 2001 and 2000 are presented below (in thousands): 2001 2000 --------- --------- DEFERRED TAX ASSETS: Federal tax operating loss carryforwards....... $28,418 $21,285 State tax operating loss carryforwards......... 3,629 2,531 Research & development credit carryforwards.... 8,419 5,102 Alternative minimum tax credit carryforwards... 362 362 Deferred revenue............................... 5,388 3,615 Deferred compensation.......................... 700 - Other ......................................... 402 459 --------- --------- Gross deferred asset........................... 47,318 33,354 Valuation allowance............................ (46,335) (32,468) --------- --------- Net deferred asset............................. 983 886 DEFERRED TAX LIABILITY: Depreciation................................... (983) (886) --------- --------- Net asset/liability............................ $ - $ - ========= ========= The valuation allowance increased by $13,867,000 during 2001. Of this change, $752,000 is attributable to certain stock option transactions and is charged directly to equity. The remaining amount of $13,115,000 is attributable to the current year tax provision and is due primarily to the increase in net operating loss and research and development tax credit carry forwards. The Company has provided a valuation allowance for the full amount of the net deferred tax asset, since management has not determined that these future benefits will more likely than not be realized as of December 31, 2001. Any subsequently recognized tax benefits relating to the valuation allowance for deferred tax assets as of December 31, 2001 and 2000 would be allocated as follows (in thousands): 2001 2000 ------- ------- Income tax provision........ $35,005 $21,123 Additional paid-in-capital.. 11,330 11,345 ------- ------- $46,335 $32,468 ======= ======= As of December 31, 2001, the Company had approximately $83,583,000 and $6,081,000 of net operating loss and research and development credit carryforwards, respectively, available for federal income tax purposes, which expire in the years 2004 through 2021. The Company also had approximately $73,308,000 and $3,544,000 of Connecticut state tax net operating loss and research and development credit carryforwards, respectively, which expire in the years 2002 through 2021. Because of "change in ownership" provisions of the Tax Reform Act of 1986, the Company's utilization of its net operating loss and research and development credit carryforwards may be subject to an annual limitation in future periods. For the year ended December 31, 2001, the Company recorded a Connecticut income tax benefit of $1,976,000. This benefit is the result of recent Connecticut legislation, which allows certain companies to obtain cash refunds from the State of Connecticut at an exchange rate of 65% of their research and development credits, in exchange for foregoing the carryfoward of these credits into future tax years. In the third quarter of 2001, the Company filed a claim to exchange their 2000 research and development credits for cash and as a result recorded a benefit. Of this benefit, $1,211,000 was recorded in the Statement of Operations and the $765,000 benefit earned from research and development qualifying expenditures resulting from stock option exercises was recorded to additional paid-in capital. 9. COMMITMENTS AND CONTINGENCIES The Company has granted Pfizer certain registration rights with respect to 2,846,000 shares of Common stock and limited preemptive rights with respect to future public offerings pursuant to stock purchase agreements entered into in connection with the Pfizer Agreements. The Company has granted certain registration rights to American Home Products with respect to 37,442 shares of Common stock purchased in connection with entering into a licensing agreement in 1996. 10. BENEFIT PLANS AND RELATED PARTIES The Company maintains a 401(k) Plan under which all of the Company's employees are eligible to participate. Each year the Company may, but is not required to, make a discretionary matching contribution to the Plan. The Company currently matches 100% of employee contributions of up to 6% of an employee's salary. One third of the match is made in cash and two thirds of the match is made in Company stock. Contributions to the 401(k) plan totaled approximately $772,000 in 2001, $600,000 in 2000 and $531,000 in 1999. The Company has made loans to certain officers and employees subject to various compensation agreements. Certain loans will be forgiven and recognized as compensation expense ratably over defined service periods for each employee ranging from three to seven years. The amount of loans outstanding at December 31, 2001 and 2000 was $481,000 and $361,000, of which $110,000 and $142,000 was short-term, respectively. 11. SUPPLEMENTAL CASH FLOW INFORMATION The Company made interest payments of approximately $204,000 in 2001, $155,000 in 2000 and $30,000 in 1999. The Company made no income tax payments in 2001, 2000 and 1999. 12. QUARTERLY FINANCIAL DATA(UNAUDITED) (in thousands except per share data) First Second Third Fourth 2001* Quarter Quarter Quarter Quarter - ----- ------- ------- ------- ------- Total revenue.................. $1,970 $3,215 $3,106 $3,223 Total expenses................. 11,403 10,146 10,754 10,274 Other income, net.............. 1,509 1,242 1,040 699 Income tax benefit............. - - 1,211 - Net loss....................... (7,924) (5,689) (5,397) (6,352) Basic and diluted earnings per share.................... (0.46) (0.33) (0.31) (0.36) 2000 - ----- Total revenue.................. $2,591 $4,620 $7,731 $5,471 Total expenses................. 14,438 8,241 8,349 9,830 Other income, net.............. 928 1,079 1,796 1,671 Cumulative effect of change in accounting principle....... (500) - - - Net income (loss)..............(11,419) (2,542) 1,178 (2,688) Basic earnings per share....... (0.75) (0.16) 0.07 (0.15) Diluted earnings per share..... (0.75) (0.16) 0.06 (0.15) * The 2001 third quarter financial data, as reported in the Company's Quarterly Report on Form 10-Q for the period ended September 30, 2001, has been adjusted to reflect a state income tax benefit of approximately $1,211,000, as described in Note 8. REPORT OF INDEPENDENT ACCOUNTANTS To the Board of Directors and Stockholders of Neurogen Corporation In our opinion, the accompanying consolidated balance sheets and the related consolidated statements of operations, of stockholders' equity and of cash flows present fairly, in all material respects, the financial position of Neurogen Corporation and its subsidiary at December 31, 2001 and December 31, 2000, and the results of their operations and their cash flows for each of the three years in the period ended December 31, 2001 in conformity with accounting principles generally accepted in the United States of America. These financial statements are the responsibility of the Company's management; our responsibility is to express an opinion on these financial statements based on our audits. We conducted our audits of these statements in accordance with auditing standards generally accepted in the United States of America, which require that we plan and perform the audit to obtain reasonable assurance about whether the financial statements are free of material misstatement. An audit includes examining, on a test basis, evidence supporting the amounts and disclosures in the financial statements, assessing the accounting principles used and significant estimates made by management, and evaluating the overall financial statement presentation. We believe that our audits provide a reasonable basis for our opinion. As discussed in Note 1 to the financial statements, the Company changed its method of accounting for revenue recognition in 2000. PRICEWATERHOUSECOOPERS LLP Hartford, Connecticut February 15, 2002 ITEM 9. CHANGES IN AND DISAGREEMENTS WITH ACCOUNTANTS ON ACCOUNTING AND FINANCIAL DISCLOSURE None. PART III ITEM 10. DIRECTORS AND EXECUTIVE OFFICERS OF THE REGISTRANT For information relating to directors and executive officers of the Company, reference is made to the discussion under the captions "Election of Directors", "Executive Officers" and "Section 16(a) Beneficial Reporting Compliance" in the Company's Proxy Statement to be delivered to the stockholders in connection with the Annual Meeting of Stockholders to be held on July 15, 2002, which information is incorporated herein by reference. ITEM 11. EXECUTIVE COMPENSATION For information relating to executive compensation, reference is made to the discussion under the captions "Director Compensation", "Compensation Committee Interlocks and Insider Participation", "Officer Compensation", "Terms and Conditions of Certain Employment and Severance Agreements", "Report of the Compensation Committee of the Board of Directors" and "Performance Graph" in the Company's Proxy Statement to be delivered to the stockholders in connection with the Annual Meeting of Stockholders to be held on July 15, 2002, which information is incorporated herein by reference. ITEM 12. SECURITY OWNERSHIP OF CERTAIN BENEFICIAL OWNERS AND MANAGEMENT For information relating to the security ownership of certain beneficial owners and management, reference is made to the discussion under the caption "Principal Stockholders" in the Company's Proxy Statement to be delivered to the stockholders in connection with the Annual Meeting of Stockholders to be held on July 15, 2002, which information is incorporated herein by reference. ITEM 13. CERTAIN RELATIONSHIPS AND RELATED TRANSACTIONS For information relating to certain relationships and related transactions, reference is made to the discussion under the caption "Certain Relationships and Related Transactions" in the Company's Proxy Statement to be delivered to the stockholders in connection with the Annual Meeting of Stockholders to be held on July 15, 2002, which information is incorporated herein by reference. PART IV ITEM 14. EXHIBITS, FINANCIAL STATEMENT SCHEDULES AND REPORTS ON FORM 8-K (a)(1) Financial Statements Reference is made to the Index to Financial Statements under Item 8 in Part II hereof, where these documents are listed. (2) Financial Statement Schedule Note: Schedules are omitted as not applicable or not required or on the basis that the information is included in the financial statements or notes thereto. (3) Exhibits EXHIBIT NUMBER DESCRIPTION - ------- ---------------------------------------------------------------------- 3.1 - Restated Certificate of Incorporation, filed June 17, 1994 (incorporated by reference to Exhibit 4.1 to Registration Statement No. 33-81268 on form S-8). 3.2 - By-Laws, as amended (incorporated by reference to Exhibit 3.6 to the Company's Form 10-K for the fiscal year ended December 31, 1993). 10.1 - Neurogen Corporation Stock Option Plan, as amended (incorporated by reference to Exhibit 10.1 to the Company's Form 10-K for the fiscal year ended December 31, 1991). 10.2 - Form of Stock Option Agreement currently used in connection with the grant of options under Neurogen Corporation Stock Option Plan (incorporated by reference to Exhibit 10.2 to the Company's Form 10-K for the fiscal year ended December 31, 1992). 10.3 - Neurogen Corporation 1993 Omnibus Incentive Plan, as amended (incorporated by reference to Exhibit 10.3 to the Company's Form 10-K for the fiscal year ended December 31, 1993). 10.4 - Form of Stock Option Agreement currently used in connection with the grant of options under Neurogen Corporation 1993 Omnibus Incentive Plan (incorporated by reference to Exhibit 10.4 to the Company's Form 10-K for the fiscal year ended December 31, 1993). 10.5 - Neurogen Corporation 1993 Non-Employee Directors Stock Option Program (incorporated by reference to Exhibit 10.5 to the Company's Form 10-K for the fiscal year ended December 31, 1993). 10.6 - Form of Stock Option Agreement currently used in connection with the grant of options under Neurogen Corporation 1993 Non-Employee Directors Stock Option Program (incorporated by reference to Exhibit 10.6 to the Company's Form 10-K for the fiscal year ended December 31, 1993). 10.7 - Employment Contract between the Company and Harry H. Penner, Jr., dated as of October 12, 1993 (incorporated by reference to Exhibit 10.7 to the Company's Form 10-K for the fiscal year ended December 31, 1993). 10.8 - Employment Contract between the Company and John F. Tallman, dated as of December 1, 1993 (incorporated by reference to Exhibit 10.25 to the Company's Form 10-Q for the quarterly period ended September 30, 1994). 10.9 - Form of Proprietary Information and Inventions Agreement(incorporated by reference to Exhibit 10.31 to Registration Statement No. 33-29709 on Form S-1). 10.10 - Collaborative Research Agreement and License and Royalty Agreement between the Company and Pfizer Inc, dated as of January 1, 1992 (CONFIDENTIAL TREATMENT REQUESTED) (incorporated by reference to Exhibit 10.35 to the Company's Form 10-K for the fiscal year ended December 31, 1991). 10.11 - Letter Agreement between the Company and Barry M. Bloom, dated January 12, 1994 (incorporated by reference to Exhibit 10.25 to the Company's Form 10-K for the fiscal year ended December 31, 1993). 10.12 - Letter Agreement between the Company and Robert H. Roth, dated April 14, 1994 (incorporated by reference to Exhibit 10.26 to the Company's Form 10-K for the fiscal year ended December 31, 1994). 10.13 - Collaborative Research Agreement and License and Royalty Agreement between the Company and Pfizer Inc, dated as of July 1, 1994 (CONFIDENTIAL TREATMENT REQUESTED) (incorporated by reference of Exhibit 10.1 to the Company's Form 10-Q for the quarterly period ended June 30, 1994). 10.14 - Stock Purchase Agreement between the Company and Pfizer dated as of July 1, 1994 (incorporated by reference to Exhibit 10.2 to the Company's Form 10-Q for the quarterly period ended June 30, 1994). 10.15 - Collaboration and License Agreement and Screening Agreement between the Company and Schering-Plough Corporation (CONFIDENTIAL TREATMENT REQUESTED) (incorporated by reference to Exhibit 10.1 to the Company's Form 8-K dated July 28, 1995). 10.16 - Lease Agreement between the Company and Commercial Building Associates dated as of August 30, 1995 (incorporated by reference to Exhibit 10.27 to the Company's Form 10-Q for the quarterly period ended September 30, 1995). 10.17 - Collaborative Research Agreement between the Company and Pfizer dated as of November 1, 1995 (CONFIDENTIAL TREATMENT REQUESTED) (incorporated by reference to Exhibit 10.1 of the Company's Form 8-K dated November 1, 1995). 10.18 - Development and Commercialization Agreement between the Company and Pfizer dated as of November 1, 1995 (CONFIDENTIAL TREATMENT REQUESTED) (incorporated by reference to Exhibit 10.2 of the Company's Form 8-K dated November 1, 1995). 10.19 - Stock Purchase Agreement between the Company and Pfizer dated as of November 1, 1995 (incorporated by reference to Exhibit 10.3 of the Company's Form 8-K dated November 1, 1995). 10.20 - Stock Purchase Agreement dated as of November 25, 1996 between American Home Products Corporation, acting through its Wyeth-Ayerst Laboratories Division, and Neurogen Corporation (CONFIDENTIAL TREATMENT REQUESTED) (incorporated by reference to Exhibit 10.1 of the Company's Form 8-K dated March 31, 1997). 10.21 - Technology agreement between the Company and Pfizer Inc, dated as of June 15, 1999 (CONFIDENTIAL TREATMENT REQUEST) (Incorporated by reference to Exhibit 10.27 to the Company's Form 10-Q for the quarterly period ended June 30, 1999). 10.22 - Employment Contract between the Company and Alan J. Hutchison, dated as of December 1, 1997 (incorporated by reference to Exhibit 10.28 to the Company's Form 10-K for the fiscal year ended December 31, 1999). 10.23 - Employment Contract between the Company and Stephen R. Davis, dated as of December 1, 1997 (incorporated by reference to Exhibit 10.29 to the Company's Form 10-K for the fiscal year ended December 31, 1999). 10.24 - Employment Contract between the Company and Kenneth R. Shaw, dated as of December 1, 1999 (incorporated by reference to Exhibit 10.30 to the Company's Form 10-K for the fiscal year ended December 31, 1999). 10.25 - Neurogen Corporation 2000 Non-Employee Directors Stock Option Program (incorporated by reference to Exhibit 10.31 to the Company's Form 10-Q for the quarterly period ended June 30, 2000). 10.26 - Form of the Non-Qualified Stock Option Agreement currently used in connection with the grant of options under the Neurogen Corporation 2000 Non-Employee Directors Stock Option Program (incorporated by reference to Exhibit 10.32 to the Company's Form 10-Q for the quarterly period ended June 30,2000). 10.27 - Registration Rights Agreement dated as of June 26, 2000 between the Company and the Purchasers listed on Exhibit A thereto (incorporated by reference to Exhibit 10.33 to the Company's Form 10-Q for the quarterly period ended June 30, 2000). 10.28 - Severance Agreement between the Company and John F. Tallman, dated as of January 15, 2001 (incorporated by reference to Exhibit 10.28 to the Company's Form 10-Q for the quarterly period ended March 31, 2001). 10.29 - Amended and Restated Neurogen Corporation 2001 Stock Option Plan, as amended and restated effective September 4, 2001 (incorporated by reference to Exhibit 10.29 to the Company's Form 10-Q for the quarterly period ended September 30, 2001). 10.30 - Form of Incentive Stock Option Agreement currently used in connection with the grant of options under the Amended and Restated Neurogen Corporation 2001 Stoc k Option Plan (incorporated by reference to Exhibit 10.30 to the Company's Form 10-Q for the quarterly period ended September 30, 2001). 10.31 - Form of the Non-Qualified Stock Option Agreement currently used in connection with the grant of options under the Amended and Restated Neurogen Corporation 2001 Stock Option Plan (incorporated by reference to Exhibit 10.31 to the Company's Form 10-Q for the quarterly period ended September 30, 2001). 10.32 - Form of Neurogen Special Committee Stock Option Plan (incorporated by reference to Exhibit 10.32 to the Company's Form 10-Q for the quarterly period ended September 30, 2001). 10.33 - Employment Agreement between the Company and William H. Koster, dated as of September 4, 2001 (incorporated by reference to Exhibit 10.33 to the Company's Form 10-Q for the quarterly period ended September 30, 2001). 10.34 - Severance Agreement between the Company and Harry H. Penner, Jr., dated as of September 7, 2001 (incorporated by reference to Exhibit 10.34 to the Company's Form 10-Q for the quarterly period ended September 30, 2001). 10.35 - Collaboration and License Agreement dated as of December 11, 2001 between the Company and Aventis Pharmaceuticals Inc. (CONFIDENTIAL TREATMENT REQUESTED) 21.1 - Subsidiary of the registrant(incorporated by reference to Exhibit 21.1 to the Company's Form 10-K for the fiscal year ended December 31, 1999). 23.1 - Consent of PricewaterhouseCoopers LLP, Independent Accountants. 24.1 - Powers of Attorney of Frank C. Carlucci, Robert H. Roth, John Simon, John F. Tallman, Robert N. Butler, Jeffrey J. Collinson , Suzanne H. Woolsey, Mark Novitch, Barry M. Bloom, Julian C. Baker, Felix J. Baker and Craig Saxton. (b) Reports on Form 8-K The Company filed two current reports on Form 8-K on December 21, 2001 to submit for filing News Releases of the Company dated December 20, 2001 announcing an exclusive worldwide collaboration agreement between Neurogen and Aventis Pharma to develop new drugs for the treatment of several disorders based on specified Company compounds, and the preliminary results from a Phase IIA clinical study of the Company's lead drug candidate for the treatment of anxiety disorders, where the subjects tested showed a trend toward efficacy that did not achieve statistical significance. SIGNATURES Pursuant to the requirements of Section 13 or 15(d) of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned, thereunto duly authorized. NEUROGEN CORPORATION /S/ WILLIAM H. KOSTER By:______________________________ William H. Koster President and Chief Executive Officer Date: March 29, 2002 Pursuant to the requirements of the Securities Exchange Act of 1934, this report has been signed below by the following persons on behalf of the registrant and in the capacities and on the dates indicated: SIGNATURE TITLE DATE ----------- ------- ------ * ___________________________ Chairman of the Board March 29, 2002 Frank C. Carlucci and Director /S/ WILLIAM H. KOSTER ___________________________ President, Chief Executive March 29, 2002 William H. Koster Officer and Director (Principal Executive Officer) /S/ STEPHEN R. DAVIS ___________________________ Executive Vice President and March 29, 2002 Stephen R. Davis Chief Business Officer (Principal Financial and Accounting Officer) * _________________________ Director March 29, 2002 Robert H. Roth, Ph.D. * __________________________ Director March 29, 2002 Jeffrey J. Collinson * _________________________ Director March 29, 2002 John Simon * _________________________ Director March 29, 2002 Robert N. Butler, M.D. * ________________________ Director March 29, 2002 Suzanne H. Woolsey * ________________________ Director March 29, 2002 Barry M. Bloom * ________________________ Director March 29, 2002 Mark Novitch * ________________________ Director March 29, 2002 Julian C. Baker * ________________________ Director March 29, 2002 Felix J. Baker /S/ WILLIAM H. KOSTER AND STEPHEN R. DAVIS *By:_____________________________________________________ William H. Koster and Stephen R. Davis, Attorneys-in-Fact EXHIBIT 23.1 Consent of Independent Accountants We hereby consent to the incorporation by reference in the Registration Statements on Form S-8 (Nos. 33-43441, 33-43541, 33-81266, 33-46324, 33-73576 and 33-73586) of the Neurogen Stock Option Plan, the 1993 Omnibus Incentive Plan, the 1993 Non-Employee Directors Plan of Neurogen Corporation, the Neurogen Corporation 2000 Non-Employee Directors Plan, the Amended and Restated Neurogen Corporation 2001 Stock Option Plan and the Neurogen Special Committee Stock Option Plan of our report dated February 15, 2002 relating to the consolidated financial statements of Neurogen Corporation, which appears in this Form 10-K. PRICEWATERHOUSECOOPERS LLP Hartford, Connecticut March 28, 2002 EXHIBIT 24.1 POWER OF ATTORNEY KNOW ALL YE PERSONS BY THESE PRESENTS, that the undersigned does hereby make, constitute and appoint William H. Koster and Stephen R. Davis, each his attorney-in-fact and agent with full power of substitution and resubstitution for him and in his name, place and stead, in any and all capacities, to execute for him and on his behalf an Annual Report pursuant to Section 13 of the Securities and Exchange Act of 1934, as amended, on Form 10-K relating to the fiscal year ended December 31, 2001, of Neurogen Corporation (the "Company"), and any and all amendments to the foregoing Annual Report on Form 10-K, which amendments may make such changes in the Annual Report on Form 10-K as such attorney-in-fact deems appropriate, and any other documents and instruments incidental thereto, and to file the same, with all exhibits thereto and all documents in connection therewith, with the Securities and Exchange Commission and the National Association of Securities Dealers, Inc., granting unto said attorney-in-fact and agent, full power and authority to do and perform each and every act and thing requisite and necessary to be done in and about the premises, as fully to all intents and purposes as the undersigned might or could do in person, hereby ratifying and confirming all that said attorney-in-fact and agent, or his substitute or substitutes, may lawfully do or cause to be done by virtue hereof. IN WITNESS WHEREOF, the undersigned has executed this Power of Attorney this 29th day of March, 2002. /s/ FRANK C. CARLUCCI ---------------------------- Frank C. Carlucci EXHIBIT 24.1 POWER OF ATTORNEY KNOW ALL YE PERSONS BY THESE PRESENTS, that the undersigned does hereby make, constitute and appoint William H. Koster and Stephen R. Davis, each his attorney-in-fact and agent with full power of substitution and resubstitution for him and in his name, place and stead, in any and all capacities, to execute for him and on his behalf an Annual Report pursuant to Section 13 of the Securities and Exchange Act of 1934, as amended, on Form 10-K relating to the fiscal year ended December 31, 2001, of Neurogen Corporation (the "Company"), and any and all amendments to the foregoing Annual Report on Form 10-K, which amendments may make such changes in the Annual Report on Form 10-K as such attorney-in-fact deems appropriate, and any other documents and instruments incidental thereto, and to file the same, with all exhibits thereto and all documents in connection therewith, with the Securities and Exchange Commission and the National Association of Securities Dealers, Inc., granting unto said attorney-in-fact and agent, full power and authority to do and perform each and every act and thing requisite and necessary to be done in and about the premises, as fully to all intents and purposes as the undersigned might or could do in person, hereby ratifying and confirming all that said attorney-in-fact and agent, or his substitute or substitutes, may lawfully do or cause to be done by virtue hereof. IN WITNESS WHEREOF, the undersigned has executed this Power of Attorney this 29th day of March, 2002. /s/ ROBERT H. ROTH, PH.D. ---------------------------- Robert H. Roth, Ph.D. EXHIBIT 24.1 POWER OF ATTORNEY KNOW ALL YE PERSONS BY THESE PRESENTS, that the undersigned does hereby make, constitute and appoint William H. Koster and Stephen R. Davis, each his attorney-in-fact and agent with full power of substitution and resubstitution for him and in his name, place and stead, in any and all capacities, to execute for him and on his behalf an Annual Report pursuant to Section 13 of the Securities and Exchange Act of 1934, as amended, on Form 10-K relating to the fiscal year ended December 31, 2001, of Neurogen Corporation (the "Company"), and any and all amendments to the foregoing Annual Report on Form 10-K, which amendments may make such changes in the Annual Report on Form 10-K as such attorney-in-fact deems appropriate, and any other documents and instruments incidental thereto, and to file the same, with all exhibits thereto and all documents in connection therewith, with the Securities and Exchange Commission and the National Association of Securities Dealers, Inc., granting unto said attorney-in-fact and agent, full power and authority to do and perform each and every act and thing requisite and necessary to be done in and about the premises, as fully to all intents and purposes as the undersigned might or could do in person, hereby ratifying and confirming all that said attorney-in-fact and agent, or his substitute or substitutes, may lawfully do or cause to be done by virtue hereof. IN WITNESS WHEREOF, the undersigned has executed this Power of Attorney this 29th day of March, 2002. /s/ JEFFREY J. COLLINSON ---------------------------- Jeffrey J. Collinson EXHIBIT 24.1 POWER OF ATTORNEY KNOW ALL YE PERSONS BY THESE PRESENTS, that the undersigned does hereby make, constitute and appoint William H. Koster and Stephen R. Davis, each his attorney-in-fact and agent with full power of substitution and resubstitution for him and in his name, place and stead, in any and all capacities, to execute for him and on his behalf an Annual Report pursuant to Section 13 of the Securities and Exchange Act of 1934, as amended, on Form 10-K relating to the fiscal year ended December 31, 2001, of Neurogen Corporation (the "Company"), and any and all amendments to the foregoing Annual Report on Form 10-K, which amendments may make such changes in the Annual Report on Form 10-K as such attorney-in-fact deems appropriate, and any other documents and instruments incidental thereto, and to file the same, with all exhibits thereto and all documents in connection therewith, with the Securities and Exchange Commission and the National Association of Securities Dealers, Inc., granting unto said attorney-in-fact and agent, full power and authority to do and perform each and every act and thing requisite and necessary to be done in and about the premises, as fully to all intents and purposes as the undersigned might or could do in person, hereby ratifying and confirming all that said attorney-in-fact and agent, or his substitute or substitutes, may lawfully do or cause to be done by virtue hereof. IN WITNESS WHEREOF, the undersigned has executed this Power of Attorney this 29th day of March, 2002. /s/ JOHN SIMON ---------------------------- John Simon EXHIBIT 24.1 POWER OF ATTORNEY KNOW ALL YE PERSONS BY THESE PRESENTS, that the undersigned does hereby make, constitute and appoint William H. Koster and Stephen R. Davis, each his attorney-in-fact and agent with full power of substitution and resubstitution for him and in his name, place and stead, in any and all capacities, to execute for him and on his behalf an Annual Report pursuant to Section 13 of the Securities and Exchange Act of 1934, as amended, on Form 10-K relating to the fiscal year ended December 31, 2001, of Neurogen Corporation (the "Company"), and any and all amendments to the foregoing Annual Report on Form 10-K, which amendments may make such changes in the Annual Report on Form 10-K as such attorney-in-fact deems appropriate, and any other documents and instruments incidental thereto, and to file the same, with all exhibits thereto and all documents in connection therewith, with the Securities and Exchange Commission and the National Association of Securities Dealers, Inc., granting unto said attorney-in-fact and agent, full power and authority to do and perform each and every act and thing requisite and necessary to be done in and about the premises, as fully to all intents and purposes as the undersigned might or could do in person, hereby ratifying and confirming all that said attorney-in-fact and agent, or his substitute or substitutes, may lawfully do or cause to be done by virtue hereof. IN WITNESS WHEREOF, the undersigned has executed this Power of Attorney this 29th day of March, 2002. /s/ ROBERT N. BUTLER, M.D. ---------------------------- Robert N. Butler, M.D. EXHIBIT 24.1 POWER OF ATTORNEY KNOW ALL YE PERSONS BY THESE PRESENTS, that the undersigned does hereby make, constitute and appoint William H. Koster and Stephen R. Davis, each his attorney-in-fact and agent with full power of substitution and resubstitution for him and in his name, place and stead, in any and all capacities, to execute for him and on his behalf an Annual Report pursuant to Section 13 of the Securities and Exchange Act of 1934, as amended, on Form 10-K relating to the fiscal year ended December 31, 2001, of Neurogen Corporation (the "Company"), and any and all amendments to the foregoing Annual Report on Form 10-K, which amendments may make such changes in the Annual Report on Form 10-K as such attorney-in-fact deems appropriate, and any other documents and instruments incidental thereto, and to file the same, with all exhibits thereto and all documents in connection therewith, with the Securities and Exchange Commission and the National Association of Securities Dealers, Inc., granting unto said attorney-in-fact and agent, full power and authority to do and perform each and every act and thing requisite and necessary to be done in and about the premises, as fully to all intents and purposes as the undersigned might or could do in person, hereby ratifying and confirming all that said attorney-in-fact and agent, or his substitute or substitutes, may lawfully do or cause to be done by virtue hereof. IN WITNESS WHEREOF, the undersigned has executed this Power of Attorney this 29th day of March, 2002. /s/ BARRY M. BLOOM ---------------------------- Barry M. Bloom EXHIBIT 24.1 POWER OF ATTORNEY KNOW ALL YE PERSONS BY THESE PRESENTS, that the undersigned does hereby make, constitute and appoint William H. Koster and Stephen R. Davis, each his attorney-in-fact and agent with full power of substitution and resubstitution for him and in his name, place and stead, in any and all capacities, to execute for him and on his behalf an Annual Report pursuant to Section 13 of the Securities and Exchange Act of 1934, as amended, on Form 10-K relating to the fiscal year ended December 31, 2001, of Neurogen Corporation (the "Company"), and any and all amendments to the foregoing Annual Report on Form 10-K, which amendments may make such changes in the Annual Report on Form 10-K as such attorney-in-fact deems appropriate, and any other documents and instruments incidental thereto, and to file the same, with all exhibits thereto and all documents in connection therewith, with the Securities and Exchange Commission and the National Association of Securities Dealers, Inc., granting unto said attorney-in-fact and agent, full power and authority to do and perform each and every act and thing requisite and necessary to be done in and about the premises, as fully to all intents and purposes as the undersigned might or could do in person, hereby ratifying and confirming all that said attorney-in-fact and agent, or his substitute or substitutes, may lawfully do or cause to be done by virtue hereof. IN WITNESS WHEREOF, the undersigned has executed this Power of Attorney this 29th day of March, 2002. /s/ MARK NOVITCH ---------------------------- Mark Novitch EXHIBIT 24.1 POWER OF ATTORNEY KNOW ALL YE PERSONS BY THESE PRESENTS, that the undersigned does hereby make, constitute and appoint William H. Koster and Stephen R. Davis, each his attorney-in-fact and agent with full power of substitution and resubstitution for him and in his name, place and stead, in any and all capacities, to execute for him and on his behalf an Annual Report pursuant to Section 13 of the Securities and Exchange Act of 1934, as amended, on Form 10-K relating to the fiscal year ended December 31, 2001, of Neurogen Corporation (the "Company"), and any and all amendments to the foregoing Annual Report on Form 10-K, which amendments may make such changes in the Annual Report on Form 10-K as such attorney-in-fact deems appropriate, and any other documents and instruments incidental thereto, and to file the same, with all exhibits thereto and all documents in connection therewith, with the Securities and Exchange Commission and the National Association of Securities Dealers, Inc., granting unto said attorney-in-fact and agent, full power and authority to do and perform each and every act and thing requisite and necessary to be done in and about the premises, as fully to all intents and purposes as the undersigned might or could do in person, hereby ratifying and confirming all that said attorney-in-fact and agent, or his substitute or substitutes, may lawfully do or cause to be done by virtue hereof. IN WITNESS WHEREOF, the undersigned has executed this Power of Attorney this 29th day of March, 2002. /s/ SUZANNE H. WOOLSEY ---------------------------- Suzanne H. Woolsey EXHIBIT 24.1 POWER OF ATTORNEY KNOW ALL YE PERSONS BY THESE PRESENTS, that the undersigned does hereby make, constitute and appoint William H. Koster and Stephen R. Davis, each his attorney-in-fact and agent with full power of substitution and resubstitution for him and in his name, place and stead, in any and all capacities, to execute for him and on his behalf an Annual Report pursuant to Section 13 of the Securities and Exchange Act of 1934, as amended, on Form 10-K relating to the fiscal year ended December 31, 2001, of Neurogen Corporation (the "Company"), and any and all amendments to the foregoing Annual Report on Form 10-K, which amendments may make such changes in the Annual Report on Form 10-K as such attorney-in-fact deems appropriate, and any other documents and instruments incidental thereto, and to file the same, with all exhibits thereto and all documents in connection therewith, with the Securities and Exchange Commission and the National Association of Securities Dealers, Inc., granting unto said attorney-in-fact and agent, full power and authority to do and perform each and every act and thing requisite and necessary to be done in and about the premises, as fully to all intents and purposes as the undersigned might or could do in person, hereby ratifying and confirming all that said attorney-in-fact and agent, or his substitute or substitutes, may lawfully do or cause to be done by virtue hereof. IN WITNESS WHEREOF, the undersigned has executed this Power of Attorney this 29th day of March, 2002. /s/ JULIAN C. BAKER ---------------------------- Julian C. Baker EXHIBIT 24.1 POWER OF ATTORNEY KNOW ALL YE PERSONS BY THESE PRESENTS, that the undersigned does hereby make, constitute and appoint William H. Koster and Stephen R. Davis, each his attorney-in-fact and agent with full power of substitution and resubstitution for him and in his name, place and stead, in any and all capacities, to execute for him and on his behalf an Annual Report pursuant to Section 13 of the Securities and Exchange Act of 1934, as amended, on Form 10-K relating to the fiscal year ended December 31, 2001, of Neurogen Corporation (the "Company"), and any and all amendments to the foregoing Annual Report on Form 10-K, which amendments may make such changes in the Annual Report on Form 10-K as such attorney-in-fact deems appropriate, and any other documents and instruments incidental thereto, and to file the same, with all exhibits thereto and all documents in connection therewith, with the Securities and Exchange Commission and the National Association of Securities Dealers, Inc., granting unto said attorney-in-fact and agent, full power and authority to do and perform each and every act and thing requisite and necessary to be done in and about the premises, as fully to all intents and purposes as the undersigned might or could do in person, hereby ratifying and confirming all that said attorney-in-fact and agent, or his substitute or substitutes, may lawfully do or cause to be done by virtue hereof. IN WITNESS WHEREOF, the undersigned has executed this Power of Attorney this 29th day of March, 2002. /s/ FELIX J. BAKER ---------------------------- Felix J. Baker EXHIBIT 24.1 POWER OF ATTORNEY KNOW ALL YE PERSONS BY THESE PRESENTS, that the undersigned does hereby make, constitute and appoint William H. Koster and Stephen R. Davis, each his attorney-in-fact and agent with full power of substitution and resubstitution for him and in his name, place and stead, in any and all capacities, to execute for him and on his behalf an Annual Report pursuant to Section 13 of the Securities and Exchange Act of 1934, as amended, on Form 10-K relating to the fiscal year ended December 31, 2001, of Neurogen Corporation (the "Company"), and any and all amendments to the foregoing Annual Report on Form 10-K, which amendments may make such changes in the Annual Report on Form 10-K as such attorney-in-fact deems appropriate, and any other documents and instruments incidental thereto, and to file the same, with all exhibits thereto and all documents in connection therewith, with the Securities and Exchange Commission and the National Association of Securities Dealers, Inc., granting unto said attorney-in-fact and agent, full power and authority to do and perform each and every act and thing requisite and necessary to be done in and about the premises, as fully to all intents and purposes as the undersigned might or could do in person, hereby ratifying and confirming all that said attorney-in-fact and agent, or his substitute or substitutes, may lawfully do or cause to be done by virtue hereof. IN WITNESS WHEREOF, the undersigned has executed this Power of Attorney this 29th day of March, 2002. /s/ CRAIG SAXTON ---------------------------- Craig Saxton EXHIBIT 10.35 COLLABORATION AND LICENSE AGREEMENT THIS COLLABORATION AND LICENSE AGREEMENT (the "Agreement"), dated as of December 11, 2001, is made by and between Aventis Pharmaceuticals Inc., a corporation organized and existing under the laws of the State of Delaware and having its principal office at Route 202-206, P. O. Box 6800, Bridgewater, New Jersey 08807 ("Aventis"), and Neurogen Corporation, a corporation organized and existing under the laws of the State of Delaware and having its principal office at 35 Northeast Industrial Road, Branford, Connecticut 06405 ("Neurogen"). INTRODUCTION WHEREAS, Aventis is engaged in the research, development and commercialization of human pharmaceutical products in a broad range of therapeutic fields; WHEREAS, Neurogen has an ongoing research program in the field of CRF1 Receptors and has developed certain intellectual property in this field; WHEREAS, the Parties desire to engage in a collaborative program to discover, research and develop drugs, which work through modulating CRF1 Receptors; WHEREAS, it is expected that the resulting compounds from such ongoing and collaborative research may have a broad range of applications, including, but not limited to, the therapeutic treatment and prevention of certain CNS disorders and diseases, such as anxiety and depression; and WHEREAS, the Parties desire for Aventis to develop and commercialize CRF1 Receptor-related compounds resulting from such ongoing and collaborative research. NOW, THEREFORE, Aventis and Neurogen agree as follows: ARTICLE 1 DEFINITIONS When used in this Agreement, each of the following capitalized terms shall have the meanings set forth in this Article 1. 1.1 "Active Compound" shall mean an Aventis Compound, a Neurogen Compound, or a Joint Compound that is not an Unavailable Compound and {__________}. (a) The phrase "Activity at a CRF1 Receptor" shall mean {__________}. (b) The phrase "CRF1 Receptor specific" shall mean not having demonstrated activity or affinity at any receptor, ion channel or other drug target other than the CRF1 Receptor with a value of less than {__________}. (c) For clarity, Schedule 1.1(c) contains examples which illustrate the application of the Active Compound criteria. 1.2 "Affiliate" shall mean a Person that, directly or indirectly, through one or more intermediates, controls, is controlled by, or is under common control with the Person specified. For the purposes of this definition, control shall mean the direct or indirect ownership of (i) in the case of corporate entities, securities authorized to cast more than fifty percent (50%) of the votes in any election for directors, or (ii) in the case of non-corporate entities, more than fifty percent (50%) ownership interest with the power to direct the management and policies of such non-corporate entity. Notwithstanding the foregoing, the term "Affiliate" shall not include subsidiaries in which a Person or its Affiliates owns a majority of the ordinary voting power to elect a majority of the board of directors, but is restricted from electing such majority by contract or otherwise, until such time as such restriction is no longer in effect. 1.3 "Aventis Compound" shall mean any Compound that (i) is within Aventis' Proprietary Chemical Library and (ii) is screened for activity against a CRF1 Receptor for purposes of the Research Program. 1.4 "Aventis Confidential Information" shall mean Confidential Information owned by Aventis or its Affiliates or otherwise designated as Aventis Confidential Information hereunder but shall not include Joint Confidential Information. 1.5 "Aventis Contributed Technology" shall mean the Aventis CRF1 Compound Technology and Aventis CRF1 Receptor Technology, each as defined below. Notwithstanding any other provision of this Agreement, it is understood and agreed to by the Parties that the Aventis Contributed Technology does not include any of Aventis' proprietary screening, pharmaceutical development, regulatory or commercialization Technology that is not specific to CRF1. (a) "Aventis CRF1 Compound Technology" shall mean all Technology (other than Joint Technology) owned or Controlled by Aventis on the Effective Date or during the Research Program, which (i) is, relates specifically to, claims or describes any Aventis Compound that qualifies as an Active Compound or (ii) that is particular to CRF1 Receptor Antagonist/Agonists and is necessary to research, develop, make, use or sell any Aventis Compound, Neurogen Compound, or Joint Compound that qualifies as an Active Compound. (b) "Aventis CRF1 Receptor Technology" shall mean all Technology (other than Joint Technology) owned or Controlled by Aventis on the Effective Date or during the term of the Research Program that relates specifically to, claims or describes a CRF1 Receptor or the use thereof, or that is necessary to determine if a Compound has Activity at a CRF1 Receptor. 1.6 "Aventis Indemnified Party" shall mean Aventis and its Affiliates and their respective directors, officers, employees and agents entitled to indemnification from Neurogen in accordance with Section 11.2 below. 1.7 "Aventis Invention" shall have the meaning set forth in Section 13.1 hereof. 1.8 "Aventis Project Progression Manual" shall mean the internal Aventis manual and policy for the progression of research and development projects in use as of the Effective Date and attached hereto as Schedule 1.8 {___________}. 1.9 "Aventis Personnel" shall mean professional researchers and scientists, and regulatory, clinical, and managerial personnel, who are employees of Aventis (or whose services were contracted for by Aventis) and having at least a Bachelors Degree in science and other academic or professional credentials demonstrating appropriate expertise for the tasks to be performed under the Research Plan or Product Development Plan, as the case may be. 1.10 "Breach Notice" shall mean a written notice of material breach as provided for in Section 12.3 below. 1.11 "Breaching Party" shall have the meaning set forth in Section 12.3 below. 1.12 "Burdened Compound" shall mean a Compound as to which there exists Third Party rights or other limitations on use, manufacture or sale, including, without limitation, such that licensing, royalty or other similar fees or payments must be made to a Third Party in connection with the use, manufacture or sale of such Compound. 1.13 "Business Day" shall mean any day except a Saturday, Sunday, or any other day on which a commercial bank in New York, New York is authorized to close. Any reference in this agreement to "day" whether or not capitalized shall refer to a calendar day, not a Business Day. 1.14 "Change of Control of Neurogen" shall mean (i) the acquisition, directly or indirectly, by a Significant Pharmaceutical Enterprise, of securities entitled to cast fifty percent (50%) or more of the votes in any election of directors of Neurogen, (ii) the sale or other transfer to a Significant Pharmaceutical Enterprise of all or substantially all of Neurogen's assets to which this Agreement relates or (iii) a business combination transaction with a Significant Pharmaceutical Enterprise, whether by means of merger, consolidation, reverse stock split or otherwise, which results in the voting securities of Neurogen outstanding immediately prior thereto ceasing to represent at least fifty percent (50%) of the combined voting power of the surviving entity immediately after such business combination transaction. 1.15 "Collaboration Product" shall mean any CRF1 Receptor Antagonist/Agonist, the manufacture, import, use, marketing, offer for sale or sale of which, if done by a Third Party (without a license to any CRF1 Patent Rights) would infringe CRF1 Patent Rights. 1.16 "Combination Product" shall mean: (a) with respect to a Collaboration Product, a Collaboration Product that is combined with one or more active ingredients that are not CRF1 Receptor Antagonist/Agonists covered by the CRF1 Patent Rights; and (b) with respect to an {___________}, an {___________} for which Aventis has made an election to pay Royalties pursuant to Section 2.3(b)(i)(A), that is combined with one or more active ingredients that are not CRF1 Receptor Antagonist/Agonists obtained by Aventis pursuant to Section 2.3(b)(i). (c) with respect to a Competing Product, a Competing Product that is combined with one or more active ingredients that are not CRF1 Receptor Antagonist/Agonists. 1.17 "Commercially Reasonable Efforts" shall mean {___________}. 1.18 {"___________"}. 1.19 "Competing Indication" shall have the meaning set forth in Section 2.3(b)(i). 1.20 "Competing Product" shall have the meaning set forth in Section 2.3(b)(i)(B). 1.21 "Compound" shall mean a chemical compound or substance and prodrugs, enantiomers, salt forms, hydrates, stereo-isomers and racemates thereof. 1.22 "Confidential Information" shall mean all proprietary materials, know-how or other information (whether or not patentable) regarding a Party's technology, products, business information or objectives, which is designated as confidential in writing by the disclosing Party, whether by letter or by the use of an appropriate stamp or legend, prior to or at the time any such material, know-how or other information is disclosed by the disclosing Party to the other Party. Notwithstanding anything contained in the foregoing to the contrary, materials, know-how or other information which is orally, electronically or visually disclosed by a Party, or is disclosed in writing without an appropriate letter, stamp or legend, shall constitute Confidential Information of a Party (i) if the disclosing Party, within thirty (30) days after such disclosure, delivers to the other Party a written document or documents describing the materials, know-how or other information and referencing the place and date of such oral, visual, electronic or written disclosure and the names of the persons to whom such disclosure was made, or (ii) such information is of the type that is customarily considered to be confidential information by persons engaged in activities that are substantially similar to the activities being engaged in by the Parties. Notwithstanding the foregoing, any technical or financial information of a Party disclosed at a meeting of the Research Committee or the Product Development Committee (or any subcommittee) or disclosed through an audit report shall constitute Confidential Information of that Party unless otherwise specified. 1.23 "Control," "Controls," or "Controlled" shall mean with respect to Technology, the possession of the ability to grant licenses or sublicenses without violating the terms of any agreement or other arrangement with, or the rights of, any other Person. 1.24 "CRF" shall mean corticotropin releasing factor. 1.25 "CRF Family Member" shall mean CRF, urocortin I, urocortin II, sauvagine, or urotensin or any fragments thereof that bind to a CRF1 Receptor. 1.26 "CRF1 Patent Rights" shall mean Patent Rights owned or Controlled by a Party which relate to the composition or use of {___________}. Notwithstanding the foregoing, in no event shall CRF1 Patent Rights include any rights obtained by Aventis to participate in the development or commercialization of an {-----------}. 1.27 "CRF1 Receptor" shall mean the subtype-1 transmembrane corticotropin releasing factor receptor found in humans and other species of animal that {----------}. 1.28 "CRF1 Receptor Antagonist/Agonist" shall mean {__________}. 1.29 "CRF1 Receptor Modulatory Compound" shall mean an Aventis Compound, Neurogen Compound or Joint Compound that has been shown to bind to a CRF1 Receptor with an affinity value of {__________}. For clarity, Schedule 1.29 contains examples which illustrate the application of the CRF1 Receptor Modulatory Compound criteria. 1.30 "Disclosing Party" shall mean a Party disclosing Confidential Information as provided in Section 10.1. 1.31 "EDC Program Candidates" shall mean the Neurogen Compounds designated as NDT 9514579, NDT 9514530, NDT 9514519, NDT 9514750 and NDT 9521084, each as more fully described in Schedule 1.31. These EDC Program Candidates shall be deemed Lead Program Compounds for purposes of this Agreement and may be designated as EDC Program Compounds upon qualification as such in accordance with the Aventis Project Progression Manual and selection by the Product Development Committee. 1.32 "EDC Program Compound" shall mean a Lead Program Compound (i) that meets the "EDC" criteria of Aventis as contained in the Aventis Project Progression Manual, and (ii) that is selected as an EDC Program Compound by the Product Development Committee in accordance with Article 3. 1.33 "Effective Date" shall mean the date first above written. 1.34 "Enforcing Party" shall mean a Party enforcing Patent Rights in accordance with Section 13.3(c). 1.35 "European Union" shall mean, from time to time, those countries that are members of the European Union. 1.36 "{___________}" ______________________. 1.37 "FDA" shall mean the United States Food and Drug Administration, or any successor agency thereof. 1.38 "First Commercial Sale" shall mean, with respect to any product approved by a Regulatory Authority for commercial sale as a drug, the first sale by the applicable Party or its Affiliates or sublicensees of such product to a Third Party. 1.39 "Force Majeure" shall mean any occurrence beyond the reasonable control of a Party that prevents or substantially interferes with the performance by the Party of any of its obligations hereunder, if such occurs by reason of any act of God, flood, fire, explosion, earthquake, strike, lockout, labor dispute, casualty or accident; or war, revolution, civil commotion, acts of public enemies, blockage or embargo; or any injunction, law, order, proclamation, regulation, ordinance, demand or requirement of any government (to the extent such government has ruling authority over such Party) or of any subdivision, authority or representative of any such government; or breakdown of plant, inability to procure or use materials, labor, equipment, transportation, or energy sufficient to meet manufacturing needs without the necessity of allocation; or any other cause whatsoever, whether similar or dissimilar to those above enumerated, beyond the reasonable control of such Party, if and only if the Party affected shall have used reasonable efforts to avoid such occurrence and to remedy it promptly if it shall have occurred. 1.40 "FTE" shall mean a full time equivalent person year (consisting of a total of 1,760 hours per calendar year, or 440 hours per calendar quarter) of scientific, technical or managerial work on or directly related to the Research Program or the clinical development of Collaboration Products. 1.41 "Hit Program Compound" shall mean any Compound that is designated as a Hit Program Compound by the Research Committee pursuant to Section 4.1(b) below, which designation has not been cancelled pursuant to Section 4.1(c). 1.42 {"___________"}. 1.43 "IND" shall mean an Investigational New Drug Application, as defined in the U.S. Federal Food, Drug, and Cosmetic Act, as amended, and the regulations promulgated thereunder, or the equivalent thereto as specified in any succeeding legislation, or its foreign equivalent for initiating clinical trials in the United States or any foreign country. 1.44 "Joint Compounds" shall mean Compounds invented and synthesized in the conduct of the Research Program, provided however that Joint Compounds shall not include any (i) Compounds which were, prior to such invention and synthesis, contained in a Party's Proprietary Chemical Library or (ii) {___________}. 1.45 "Joint Confidential Information" shall mean Confidential Information owned jointly by Aventis and Neurogen or otherwise designated as Joint Confidential Information hereunder. 1.46 "Joint Inventions" shall have the meaning set forth in Section 13.1. 1.47 "Joint Technology" shall mean Technology that is particular to the use of a CRF1 Receptor, or is necessary to research, develop, make, use, or sell a Collaboration Product, which Technology (i) is invented during the term of the Research Program in the course of carrying out the Research Program, or (ii) is invented jointly by the Parties during the term of the Product Development Program in the course of carrying out the Product Development Program. 1.48 "Lead Program Compound" shall mean a Hit Program Compound that meets the "Lead Selection" criteria of Aventis as contained in the Aventis Project Progression Manual. 1.49 "Mark" shall have the meaning set forth in Section 13.6. 1.50 "Materials" shall mean proprietary clones, cell lines, assays, reagents and materials derived therefrom useful in the conduct of the Research Program. For clarity, Materials shall not include Compounds. 1.51 "Milestone Payments" shall mean the payments to be made by Aventis to Neurogen upon occurrence of certain events as set forth in Article 7. 1.52 "NDA" shall mean a New Drug Application pursuant to 21 U.S.C. Section 505(b)(1) submitted to the FDA or any successor application or procedure or any foreign counterpart of a U.S. New Drug Application for approval to market, including, where applicable, applications for pricing and reimbursement approval. 1.53 "Net Sales" shall mean: (a) with respect to Aventis, the gross amounts invoiced by any of Aventis or its Affiliates or sublicensees on account of sales of a Collaboration Product {___________}, to Third Parties (including without limitation Third Party distributors and wholesalers), less the total of: (i) Trade, cash and/or quantity discounts actually allowed which are not already reflected in the amount invoiced; (ii) Excise, sales and other consumption taxes (including VAT on the sale of Collaboration Products {___________}) and custom duties to the extent included in the invoice price and to the extent such taxes are remitted to the applicable taxing authority; (iii)Freight, insurance and other transportation charges to the extent included in the invoice price and separately identified on the invoice or other documentation maintained in the ordinary course of business; (iv) Amounts repaid or credited by reason of returns, rejections, defects or recalls or because of chargebacks, retroactive price reductions, refunds or billing errors; and (v) Compulsory payments and rebates directly related to the sale of Collaboration Products {___________}, accrued, paid or deducted in a manner consistent with generally accepted accounting principles, pursuant to agreements (including, but not limited to, managed care agreements) or governmental regulations. Use of Collaboration Products {___________} for promotional or sampling purposes and for use in clinical trials contemplated under this Agreement shall not be considered in determining Net Sales. In the case of any sale of a Collaboration Product {___________} between or among Aventis and its Affiliates or sublicensees for resale, Net Sales shall be calculated as above only on the first arm's length sale thereafter to a Third Party. In the event a Collaboration Product {___________}, is sold as part of a Combination Product, the Net Sales from the Combination Product, for the purposes of determining royalty payments, shall be determined by multiplying the Net Sales of the Combination Product (as defined in the standard Net Sales definition), during the applicable royalty reporting period, by the fraction, A/A+B, where A is the average per unit sale price of active ingredient contained in the Collaboration Product {___________}, when sold separately in finished form in the country in which the Combination Product is sold and B is the average per unit sale price of active ingredient contained in the other product(s) included in the Combination Product when sold separately in finished form in the country in which the Combination Product is sold, in each case during the applicable royalty reporting period or, if sales of the Collaboration Product {___________}, alone did not occur in such period, then in the most recent royalty reporting period in which arms length fair market sales of such Collaboration Product {___________}, occurred. In the event that such average sale price cannot be determined for both the Collaboration Product {___________}, on the one hand, and all other product(s) included in the Combination Product, on the other, Net Sales for the purposes of determining royalty payments shall be mutually agreed upon by the Parties based on the relative value contributed by each component, such agreement not to be unreasonably withheld. (b) With respect to Neurogen, the gross amounts invoiced by any of Neurogen or its Affiliates or sublicensees on account of sales of a Competing Product to Third Parties (including without limitation Third Party distributors and wholesalers), less the total of: (i) Trade, cash and/or quantity discounts actually allowed which are not already reflected in the amount invoiced; (ii) Excise, sales and other consumption taxes (including VAT on the sale of Competing Products) and custom duties to the extent included in the invoice price and to the extent such taxes are remitted to the applicable taxing authority; (iii)Freight, insurance and other transportation charges to the extent included in the invoice price and separately identified on the invoice or other documentation maintained in the ordinary course of business; (iv) Amounts repaid or credited by reason of returns, rejections, defects or recalls or because of chargebacks, retroactive price reductions, refunds or billing errors; and (v) Compulsory payments and rebates directly related to the sale of Competing Products, accrued, paid or deducted in a manner consistent with generally accepted accounting principles, pursuant to agreements (including, but not limited to, managed care agreements) or governmental regulations. Use of Competing Products for promotional or sampling purposes and for use in clinical trials contemplated under this Agreement shall not be considered in determining Net Sales. In the case of any sale of a Competing Product between or among Neurogen and its Affiliates or sublicensees for resale, Net Sales shall be calculated as above only on the first arm's length sale thereafter to a Third Party. In the event a Competing Product is sold as part of a Combination Product, the Net Sales from the Combination Product, for the purposes of determining royalty payments, shall be determined by multiplying the Net Sales of the Combination Product (as defined in the standard Net Sales definition), during the applicable royalty reporting period, by the fraction, A/A+B, where A is the average per unit sale price of active ingredient contained in the Competing Product when sold separately in finished form in the country in which the Combination Product is sold and B is the average per unit sale price of active ingredient contained in the other product(s) included in the Combination Product when sold separately in finished form in the country in which the Combination Product is sold, in each case during the applicable royalty reporting period or, if sales of the Competing Product alone did not occur in such period, then in the most recent royalty reporting period in which arms length fair market sales of such Competing Product occurred. In the event that such average sale price cannot be determined for both the Competing Product and all other product(s) included in the Combination Product, Net Sales for the purposes of determining royalty payments shall be mutually agreed upon by the Parties based on the relative value contributed by each component, such agreement not to be unreasonably withheld. 1.54 "Neurogen Compound" shall mean any Compound that (i) is within Neurogen's Proprietary Chemical Library and (ii) is described in the Neurogen Initial Report or screened for activity against a CRF1 Receptor for purposes of the Research Program. 1.55 "Neurogen Confidential Information" shall mean Confidential Information owned by Neurogen or its Affiliates or otherwise designated as Neurogen Confidential Information hereunder but shall not include Joint Confidential Information. 1.56 "Neurogen Contributed Technology" shall mean the Neurogen CRF1 Compound Technology and Neurogen CRF1 Receptor Technology, each as defined below. Notwithstanding any other provision of this Agreement, it is understood and agreed by the Parties that the Neurogen Contributed Technology does not include any of Neurogen's proprietary screening or pharmaceutical development Technology that is not specific to CRF1. For example, Neurogen Contributed Technology does not include Neurogen's AIDDTM Technology. (a) "Neurogen CRF1 Compound Technology" shall mean all Technology (other than Joint Technology) owned or Controlled by Neurogen on the Effective Date or during the Research Program, which (i) are the EDC Program Candidates, (ii) is, relates specifically to, claims or describes any Neurogen Compound that qualifies as an Active Compound or (iii) that is particular to CRF1 Receptor Antagonist/Agonists and is necessary to research, develop, make, use or sell any Neurogen Compound, Aventis Compound, or Joint Compound that qualifies as an Active Compound. Neurogen CRF1 Compound Technology will specifically include, without limitation, information regarding CRF1 Receptor-related pharmacophores and the Patent Rights set forth on Schedule 1.56 hereto, which schedule may be amended, updated or replaced by the {___________} of the Research Committee. (b) "Neurogen CRF1 Receptor Technology" shall mean all Technology (other than Joint Technology) owned or Controlled by Neurogen on the Effective Date or during the Research Program that relates specifically to, claims or describes a CRF1 Receptor or the use thereof, or that is reasonably necessary to determine if a Compound has Activity at a CRF1 Receptor, including without limitation, Neurogen's standard screening assay, the procedure for which is set forth in Schedule 1.1(a). 1.57 "Neurogen Indemnified Party" shall mean Neurogen and its Affiliates and their respective directors, officers, employees and agents entitled to indemnification from Aventis in accordance with Section 11.1 below. 1.58 "Neurogen Initial Report" shall mean a report delivered by Neurogen prior to the Effective Date containing (i) the number, structure and screening results (including structure activity relationship data) of all Compounds screened by Neurogen through the date of such report which have Activity at a CRF1 Receptor and are not Unavailable Compounds and, to the extent any such Compound is known to be a Burdened Compound, the nature of the circumstances resulting in such status; (ii) the number of Compounds which would have been required to have been listed pursuant to item (i) above but for the fact that such Compounds are Unavailable Compounds and the nature of the circumstances resulting in such status; and (iii) the structure of all Compounds screened by Neurogen in Neurogen's standard screening assay (the procedure for which is set forth in Schedule 1.1(a)) through the date of such report which have been shown not to have Activity at a CRF1 Receptor and that fall within the generic scope of a claim (within Neurogen's Patent Rights) that includes within its scope any EDC Program Candidate, which report shall be attached to this Agreement as Schedule 1.58. 1.59 "Neurogen Invention" shall have the meaning set forth in Section 13.1 hereof. 1.60 "Neurogen Researchers" shall mean professional researchers and scientists who are employees of Neurogen and having at least a Bachelors Degree in science and other academic or professional credentials demonstrating appropriate expertise for the task to be performed under the Research Plan or the Product Development Plan, as the case may be. 1.61 "Non-Breaching Party" shall mean a Party sending a Breach Notice in accordance with Section 12.3 below. 1.62 "Non-Enforcing Party" shall mean, where one Party is enforcing Patent Rights against a Third Party, the other Party. 1.63 {"___________"}. 1.64 "Party" shall mean Aventis or Neurogen, as the case may be, and "Parties" shall mean Aventis and Neurogen. 1.65 "Patent Rights" shall mean the rights and interests in and to all issued patents and pending patent applications in any country, including without limitation, all provisional applications, substitutions, continuations, continuations-in-part, divisions, and renewals, all letters patent granted thereon, and all patents-of-addition, reissues, reexaminations and extensions or restorations by existing or future extension or restoration mechanisms. 1.66 "Person" shall mean any individual, firm, corporation, partnership, limited liability company, trust, unincorporated organization or other entity or a government agency or political subdivision thereto, and shall include any successor (by merger or otherwise) of such Person. 1.67 "Phase I Study" shall mean a clinical study in human subjects to generally evaluate the pharmacokinetic and safety properties of a drug candidate. One or more of the following properties may be evaluated: maximum tolerated dose; dosing interval; exposure; and absorption, distribution, metabolism and excretion (ADME). 1.68 "Phase IIA Study" shall mean a clinical study in a target patient population to evaluate preliminary efficacy and/or further safety of a drug candidate. One or more of the following properties may be evaluated: exploration, dose response, duration of effect and kinetic/dynamic relationship. 1.69 "Phase IIB Study" shall mean a controlled dose ranging clinical trial to evaluate further the efficacy and safety of a candidate drug in the targeted patient population and to attempt to define an appropriate dosing regimen. 1.70 "Phase III Study" shall mean a controlled clinical trial to confirm with statistical significance the efficacy and safety of the drug in larger, targeted patient populations, performed to obtain Regulatory Approval of an NDA, or to enhance the profile of a product for a non-approved indication and not required or pivotal for Regulatory Approval of an NDA. 1.71 "Product Development Committee" shall have the meaning set forth in Section 3.2. 1.72 "Product Development Plan" shall have the meaning set forth in Section 3.2. 1.73 "Proprietary Chemical Library" shall mean those Compounds that a Party owns or Controls as of the Effective Date, or that come into the Party's ownership or Control (other than by licenses granted in this Agreement) during the term of the Research Program (other than those Joint Compounds that were not within a Party's ownership or Control prior to the invention or synthesis of such Joint Compound in the Research Program). 1.74 "Provider Lock-Up Period" shall have the meaning set forth in Section 2.4(c)(ii). 1.75 "Providing Party" shall have the meaning set forth in Section 2.4(a). 1.76 "Receiver Lock-Up Period" shall have the meaning set forth in Section 2.4(c)(i). 1.77 "Receiving Party" shall have the meaning set forth in Section 2.4(a). 1.78 "Recipient" shall have the meaning set forth in Section 10.1. 1.79 "Regulatory Approval" shall mean the technical, medical and scientific licenses, registrations, authorizations and approvals (including, without limitation, approvals of NDAs, supplements and amendments, pre- and post- approvals, pricing and third party reimbursement approvals, and labeling approvals) of any national, supra-national, regional, state or local regulatory agency, department, bureau, commission, council or other governmental entity, necessary for the development (including the conduct of clinical trials), manufacture, distribution, marketing, promotion, offer for sale, use, import, export or sale of Collaboration Product(s) in a regulatory jurisdiction. 1.80 "Regulatory Authority" shall mean any national (e.g., the FDA), supra-national (e.g., the European Commission or the European Agency for the Evaluation of Medicinal Products), regional, state or local regulatory agency, department, bureau, commission, council or other governmental entity in each country of the territory involved in the granting of Regulatory Approval. 1.81 "Research Committee" shall have the meaning set forth in Section 3.1. 1.82 "Research Plan" shall have the meaning set forth in Section 4.3. 1.83 "Research Program" shall mean the collaborative research program conducted in accordance with the provisions of Article 4 below during the Initial Term and any extension thereof. 1.84 "Retained Indications" shall have the meaning set forth in Section 2.3(b)(i)(B). 1.85 "Royalties" shall mean those royalties payable by Aventis to Neurogen, or Neurogen to Aventis, as the case may be, pursuant to this Agreement. 1.86 "Significant Pharmaceutical Enterprise" shall mean (a) company (other than Aventis or an Aventis Affiliate) which, together with its Affiliates, had worldwide annual gross revenues from the sale of pharmaceutical products in excess of {__________} during its most recently completed fiscal year and (b) any Affiliate of such company. 1.87 "Technology" shall mean proprietary data, information, Compounds, Materials, intellectual property, including but not limited to, trade secrets, know-how, inventions and technology, whether patentable or not, and Patent Rights directed to any of the foregoing. 1.88 "Third Party(ies)" shall mean any Person other than Neurogen, Aventis and their respective Affiliates. 1.89 "Unavailable Compound" shall mean a Compound that has been reported by one Party to the other as not being available for research and development in the Research Program because {__________}. Such report may be made on a Compound by Compound basis or by a generic description applicable to a group or class of Compounds. 1.90 "Valid Claim" shall mean a claim of an issued and unexpired patent or a claim of a pending patent application, which claim has not been held invalid or unenforceable by a court or other government agency of competent jurisdiction from which no appeal can be or has been taken and has not been admitted to be invalid or unenforceable through re-examination or disclaimer or otherwise; provided, however, that if a claim of a pending patent application shall not have issued within five years after the filing date from which such claim takes priority such claim shall not constitute a Valid Claim for the purposes of this Agreement unless and until such claim shall issue. 1.91 "Weighted Average Royalty Rate" shall mean the amount A divided by B (A/B) where A is the sum of (i) the product of the aggregate Net Sales of a Collaboration Product up to and including {__________} in a calendar year multiplied by {__________}, plus (ii) the product of the incremental aggregate Net Sales of the Collaboration Product over {__________} up to and including {__________} in a calendar year multiplied by {__________}, plus (iii) the product of the incremental aggregate Net Sales of the Collaboration Product over {__________} up to and including {__________} in a calendar year multiplied by {__________}, plus (iv) the product of the incremental aggregate Net Sales of the Collaboration Product over {__________} in a calendar year multiplied by {__________}, and B is the aggregate Net Sales of the Collaboration Product in a calendar year. ARTICLE 2 LICENSES AND EXCLUSIVITY 2.1 Development and Commercialization License Grant to Aventis. Subject to the obligations, conditions, and termination rights set forth herein, Neurogen hereby grants to Aventis the sole and exclusive worldwide right and license, with the right to sublicense, under the Neurogen Contributed Technology, Neurogen's interest in any Joint Technology and Neurogen's interest in the CRF1 Patent Rights, to develop, have developed, make, have made, use, import, market, have marketed, offer for sale, sell and have sold Collaboration Products. For purposes of clarification, unless otherwise expressly provided for herein, there shall be no limitation on the licenses granted pursuant to this Section 2.1 regarding indications for which Collaboration Products may be used. 2.2 Reciprocal Research License. (a) Neurogen grants to Aventis a co-exclusive worldwide right and license, with no right to sublicense, under the Neurogen Contributed Technology and Neurogen's interest in any Joint Technology, to conduct the Research Program in accordance with the Research Plan. (b) Aventis grants to Neurogen a co-exclusive worldwide right and license, with no right to sublicense, under the Aventis Contributed Technology, and Aventis' interest in any Joint Technology, to conduct the Research Program in accordance with the Research Plan. (c) The licenses granted pursuant to this Section 2.2 and Section 2.1 above include the right of each licensee thereunder to use its Affiliates in exercising such rights and carrying out its obligations under this Agreement; provided that in the event any such Affiliate ceases to meet the definition of an Affiliate (whether due to the transfer or sale of all or substantially all of the assets or stock of such Affiliate or otherwise) then such right with respect to such Affiliate shall terminate. 2.3 Exclusivity. (a) During the term of the Research Program, neither Party nor its Affiliates shall conduct any other (i.e., other than those activities specified by this Agreement or by the Research Committee pursuant hereto) research, development, manufacturing or commercialization activity, alone or with others, directed to CRF1 Receptor Antagonist/Agonists; provided that the activity of a Party directed toward discovering Active Compounds for purposes of the Research Program as contemplated by Section 4.1(a)(ii) and (iii) shall not be a violation of this Section 2.3(a). (b) Following the term of the Research Program, Aventis and any Affiliates of Aventis may conduct an independent program related to CRF1, provided that: {___________} (c) For clarity, it is understood and agreed that, except as set forth in Sections 2.4, 2.5, and 2.6 below, during the term of this Agreement and thereafter, each Party may screen any Joint Compound against any target. 2.4 Lock-Up Period. {___________} 2.5 Use of Compounds Outside the Research Program and Product Development Plan. During the term of this Agreement, any Compound designated as an EDC Program Compound shall not be used for any purpose other than those activities specified by the Research Committee or Product Development Committee. 2.6 Back-Up Reserve. The Research Committee shall have the discretion to select as back-ups for a particular EDC Program Compound or Collaboration Product, by {___________}, any Active Compounds, Hit Program Compounds or Lead Compounds. Until the termination of this Agreement, or until the Research Committee, by {___________} or the Product Development Committee, in its sole discretion, releases such Compounds from such restrictions, neither Party may use any Compound selected as a back-up for any purpose whatsoever other than: (a) for carrying out its responsibilities under the Research Program, or (b) for carrying out its responsibilities under the Product Development Plan, or (c) for such other research and development purposes that do not involve the use of Confidential Information (in accordance with Section 10.1, and specifically including but not restricted to Confidential Information protected by the provisions of Sections 4.1(d), 13.2(e)(ii) or 13.7), but then only if the structure of such Compound shall have become publicly known other than as a result of breach of confidentiality by such Party. ARTICLE 3 JOINT COMMITTEES 3.1 Research Committee. Immediately following the Effective Date, Aventis and Neurogen will establish a research committee (the "Research Committee") consisting of at least three (3) members from each of Aventis and Neurogen. Each member of the Research Committee shall have the authority, experience and seniority to enable him or her to carry out the responsibilities of the Research Committee. The Research Committee will be responsible for developing, monitoring and reviewing the implementation of the Research Plan by the Parties and for determining the mechanisms for exchange of information and materials between the Parties. From time to time, the Research Committee may establish subcommittees to oversee specific projects or activities and such subcommittees shall be constituted as the Research Committee shall determine. The Research Committee will exist until the expiration or earlier termination of the Research Program unless the Parties otherwise agree in writing. (a) Chairperson. The Research Committee shall appoint a chairperson from among its members, which shall rotate semi-annually between representatives from Neurogen and representatives from Aventis. The chairperson will be responsible for scheduling meetings of the Research Committee, preparing agendas for meetings and sending to all Research Committee members notices of all regular meetings and agendas for such meetings. The chairperson shall appoint a secretary for each meeting who will record the minutes of the meeting, circulate copies of meeting minutes to the Parties and each Research Committee member promptly following the meeting for review, comment and approval and finalize approved meeting minutes. (b) Meetings. The Research Committee shall meet at least once each calendar quarter and may meet at additional times as the Parties shall agree. Meetings will alternate between the offices of the Parties, unless otherwise agreed, or may be held telephonically or by video-conference. Each Party shall be responsible for expenses incurred by its employees and its members of the Research Committee incurred in attending or otherwise participating in Research Committee meetings. (c) Decisions of the Committee. The responsibility of the Research Committee shall be the timely identification and development of Hit Program Compounds and Lead Program Compounds and recommendation of EDC Program Compounds. {___________}. The Parties may vote at meetings in person, or by telephone, and may vote by proxy. {___________}. In any other event where a decision cannot be reached by the Research Committee, the matter shall be referred for resolution as set forth in Section 14.1. 3.2 Product Development Committee. Immediately following the Effective Date, Aventis and Neurogen will establish a product development committee (the "Product Development Committee") consisting of at least two (2) members from each of Aventis and Neurogen. Each member of the Product Development Committee shall have the authority, experience and seniority to enable him or her to carry out the responsibilities of the Product Development Committee. The Product Development Committee will be responsible for determining selection of Lead Program Compounds as EDC Program Compounds based on the recommendation of the Research Committee, developing a plan for, monitoring and reviewing the pre-clinical and clinical development of the Collaboration Products by the Parties and for determining the mechanisms for exchange of information and materials between the Parties. From time to time, the Product Development Committee may establish subcommittees to oversee specific projects or activities and such subcommittees shall be constituted as the Product Development Committee shall determine. The Product Development Committee will exist during the clinical development of Collaboration Products from EDC Program Compound designation through launch unless the Parties otherwise agree in writing. Within sixty (60) days of the Effective Date, an initial product development plan shall be agreed to and attached to this Agreement as Schedule 3.2 ("Product Development Plan"). The Product Development Plan shall be updated quarterly by the Product Development Committee. It is understood and agreed that the sharing of information and other activities and responsibilities of the Product Development Committee may need to be modified if necessary to comply with applicable antitrust laws, and only shall be so modified by mutual agreement after good faith negotiations. (a) Designation of EDC Program Compounds During Term of Research Program. EDC Program Compounds may be recommended by the Research Committee and designated by the Product Development Committee, subject to prior and continuing Aventis internal approvals of such selection, during the term of the Research Program. (b) Designation of EDC Program Compounds After Term of Research Program. EDC Program Compounds may be designated by the Product Development Committee after the term of the Research Program at its discretion. (c) Chairperson. The chairperson of the Product Development Committee shall be designated by Aventis. The chairperson will be responsible for scheduling meetings of the Product Development Committee, preparing agendas for meeting and sending to all Product Development Committee members notices of all regular meetings and agendas for such meeting. The chairperson shall appoint a secretary for each meeting who will record the minutes of the meeting, circulate copies of meeting minutes to the Parties and each Product Development Committee member promptly following the meeting for review, comment and approval and finalize approved meeting minutes. (d) Meetings. The Product Development Committee shall meet at least once each calendar quarter during the clinical development of Collaboration Products and may meet at additional times as the Parties shall agree. Meetings will alternate between the offices of the Parties, unless otherwise agreed, or may be held telephonically or by video-conference. Each Party shall be responsible for expenses incurred by its employees and its members of the Product Development Committee incurred in attending or otherwise participating in Product Development Committee meetings. (e) Decisions of the Committee. The responsibility of the Product Development Committee shall be the oversight of the implementation of the Product Development Plan for EDC Program Compounds and of Collaboration Products. Unless otherwise specified herein, all decisions of the Product Development Committee shall be made by majority vote, with Aventis having {__________} and Neurogen having {__________}. The Parties may vote at meetings in person, or by telephone, and may vote by proxy. ARTICLE 4 RESEARCH PROGRAM AND RESEARCH FUNDING 4.1 Research Program. (a) General. The Research Program will be focused on (i) further screening and development of the Neurogen Compounds referred to in the Initial Report, (ii) the screening by Neurogen of the Neurogen Proprietary Chemical Library to identify CRF1 Receptor Antagonist/Agonists and Neurogen's optimization chemistry activity to synthesize and identify Neurogen Compounds that are Active Compounds, (iii) the screening of the Aventis Proprietary Chemical Library by Aventis to identify CRF1 Receptor Antagonist/Agonists and Aventis' optimization chemistry activity to synthesize and identify Aventis Compounds that are Active Compounds, (iv) the furnishing by the Parties to each other of certain relevant data and other information with respect to Active Compounds from their respective libraries in furtherance of the Research Program, (v) the review of such information by the Research Committee and the decision thereof to designate such Compounds as Hit Program Compounds pursuant to Section 4.1(b), (vi) a medicinal chemistry program based on the structures of Hit Program Compounds for the development of Lead Program Compound candidates, (vii) screening and testing of Lead Program Compound candidates to develop data and other information for review by the Research Committee and the identification thereby of Lead Program Compounds, (viii) further pre-clinical research and screening of Lead Program Compounds, (ix) development of animal models, testing for efficacy and safety, drug metabolism and pharmacokinetics analysis of Lead Program Compounds, and (x) development of data and other information for review by the Research Committee and the identification thereby of Lead Program Compounds for recommendation to the Product Development Committee as EDC Program Compounds. Except to the extent agreed to by the Party owning such Proprietary Chemical Library, any screening and optimization work regarding Compounds within a Party's Proprietary Chemical Library shall be exclusively conducted by the Party owning or Controlling such Proprietary Chemical Library. In addition, to the extent required by the Party from whose Proprietary Chemical Library an Active Compound was identified, any further optimization work regarding such Active Compound shall be exclusively conducted by the Party owning or Controlling such Active Compound. (b) Designation of Hit Program Compounds. A Compound shall become a Hit Program Compound upon its designation as such by the Research Committee pursuant to this Section 4.1. All Active Compounds shall be eligible for designation by the Research Committee as a Hit Program Compound. Furthermore, the Research Committee may designate (by {___________}) any Compound, which does not meet the criteria for an Active Compound set forth in Section 1.1, as a Hit Program Compound if such Compound: (i) {__________}; and (ii) is a CRF1 Receptor Antagonist/Agonist that meets the "Hit Series Criteria" of Aventis as contained in the Aventis Project Progression Manual and any other criteria (other than any defining an Active Compound) set forth in the Research Plan; and (iii) is not an Unavailable Compound. (c) Cancellation of Hit Program Compound Designation. Either Party shall be entitled to cancel the Active Compound status and, if applicable, the Hit Program Compound status of any Compound at any time after such Compound is reported to be an Active Compound and prior to the date which is six (6) months after such Compound's designation as a Hit Program Compound, if such Party discovers that such Compound is an Unavailable Compound. (d) Confidential Information and Non-CRF1 Receptor Programs. The Parties further agree that, in accordance with Section 10.1, each will not use any Confidential Information provided to it by the other Party regarding any non-CRF1 activity and/or utility of any Compound derived from the other Party's Proprietary Chemical Library for any purpose whatsoever other than discovering, developing, and obtaining patent protection for CRF1 Receptor Antagonist/Agonists for purposes of this Agreement. (e) Record of Screening. Each Party shall keep a record of the Compounds it screens for activity against a CRF1 Receptor in the conduct of the Research Program, which record shall include the date of screening. 4.2 Term of the Research Program. The initial term (the "Initial Term") of the Research Program will be three (3) years unless earlier terminated in accordance with Article 12 hereof. The Initial Term of the Research Program will begin on the Effective Date. Upon the expiration of the initial three (3) year term, the term of the Research Program may be extended for an additional up to two (2) year term (the "Extension Term") at the request of Aventis upon at least 90 days' prior written notice. 4.3 Creation and Update of the Research Plan. Within forty-five (45) days following the Effective Date, the Research Committee shall develop and approve a research plan and budget for the Research Program (the "Research Plan"), and attach such Research Plan to this Agreement as Schedule 4.3. The Research Plan shall include both detailed plans for the following year including staffing levels, activities and estimated expenditures as well as more general plans for the remaining term of the Research Program. The initial Research Plan shall cover the period commencing on its approval and ending on December 31, 2002. After the approval of the initial Research Plan, the Research Plan will be updated prior to December 31, 2002 for the following year and on an annual basis on or before December 31 of each year thereafter. The Research Plan may only be modified or amended by the action of the Research Committee in accordance with Section 3.1 hereof. Except as expressly set forth in Section 4.4 or 4.5 below, each Party shall be responsible for its own costs and expenses incurred in the conduct of the Research Program. 4.4 Conduct of the Research Program. Neurogen and Aventis shall each use Commercially Reasonable Efforts to perform its obligations under the Research Program in accordance with the Research Plan. (a) Neurogen Researcher FTE Commitment; Third Party Costs. As part of such efforts, during the term of the Research Program, Neurogen shall apply a minimum of {__________} Neurogen Researcher FTEs over the three (3) year period of the Initial Term, not to exceed {__________} or be less than {__________} Neurogen Researcher FTEs in any year in performing its obligations under the Research Program. {__________} per FTE per year. During the Extension Term, if any, Neurogen shall supply at Aventis' option up to {__________} Neurogen Researcher FTEs over the two (2) year period of the Extension Term, not to exceed {__________} Neurogen Researcher FTEs in any quarter in performing its obligations under the Research Program. Notwithstanding the foregoing, to the extent agreed to by both the Research Committee and the Product Development Committee, Neurogen Researcher FTEs may be assigned to development activities under the Product Development Plan instead of research activities under the Research Plan. Subject to Neurogen's right to receive the funding described in Section 4.5 below, Neurogen shall have the responsibility, at its sole cost and expense, of funding the cost of each Neurogen Researcher FTE conducting Neurogen's responsibilities under the Research Program, including, without limitation, all manpower, capital equipment, facilities, laboratory supplies, research administration and management and general and administrative expenses associated therewith and Aventis shall have no responsibility in that regard, except to make payment when due pursuant to Section 4.5 below; provided, however, that Aventis will reimburse Neurogen for any payments made to Third Parties for goods or services required by the Research Plan or the Product Development Plan approved in advance by Aventis. (b) Aventis Commitment. During the term of the Research Program, Aventis shall apply Commercially Reasonable Efforts over the three (3) year period of the Initial Term, in performing its obligations under the Research Program. Notwithstanding the foregoing, to the extent agreed to by both the Research Committee and the Product Development Committee, Aventis Personnel FTEs may be assigned to development activities under the Product Development Plan instead of research activities under the Research Plan. Unless otherwise specified herein, Aventis shall be responsible for all costs of research, development and commercialization of products or potential products which it pursues under this Agreement. 4.5 Funding of the Research Program. (a) Funding by Aventis. During the Initial Term of the Research Program and pursuant to Section 4.5(b), Aventis will pay to Neurogen funds in the amount of {__________} per FTE per year, and shall fund a minimum of {__________} Neurogen Researcher FTEs over the three (3) year period of the Initial Term, provided that Neurogen applies such {__________} Neurogen Researcher FTEs during the three (3) year period. During the Extension Term, if any, of the Research Program and, pursuant to Section 4.5(b), Aventis will pay to Neurogen funds in an amount adjusted by use of the Producer Price Index to have the value on the Effective Date of {__________} per FTE per year for up to {__________} Neurogen Researcher FTEs per year unless otherwise agreed pursuant to Section 4.4. (b) Reporting by Neurogen and Payment by Aventis. Within thirty (30) days after the beginning of each calendar quarter, Neurogen will provide to Aventis a report setting forth the number of Neurogen Researcher FTEs actually devoted to the Research Program or the Product Development Plan in the previous calendar quarter, along with their names and titles, together with an accounting of the difference between such actual use and the scheduled use of Neurogen Researcher FTEs for that quarter. Within {___________} business days after receipt of such report, Aventis will pay to Neurogen funds equal to the value of the Neurogen Researcher FTEs actually devoted to the Research Plan during such quarter; provided, however, that during the three (3) year period constituting the Initial Term Aventis shall not be obligated to reimburse Neurogen (and Neurogen shall not be obligated to provide) for more than {__________} Neurogen Researcher FTEs, unless Aventis has agreed in advance that Neurogen should provide such additional FTEs. Neurogen, within thirty (30) days after the beginning of each calendar quarter, will provide Aventis with a report detailing all payments made to Third Parties in accordance with Section 4.4(a) during the previous calendar quarter. Subject to Aventis' right to audit such reports using the procedures set forth in Section 4.5(d), Aventis shall reimburse Neurogen for such payments within {___________} days of receipt of such report. (c) Reporting by Aventis. Within thirty (30) days after the beginning of each calendar quarter, Aventis will provide to Neurogen a report setting forth the number of Aventis Personnel FTEs actually devoted to each of the Research Program and the Product Development Plan in the previous calendar quarter along with their names and titles, together with an accounting of the difference between such actual use and the scheduled use of Aventis Personnel FTEs for that quarter. (d) Records and Audits. (i) Of Neurogen. During the term of the Research Program and for a period of three (3) years thereafter, Neurogen shall keep and maintain accurate and complete records showing the time devoted and activities performed by each Neurogen Researcher in performing Neurogen's obligations under the Research Program or the Product Development Plan in sufficient detail such that the number of Neurogen Researcher FTEs applied to the Research Program or the Product Development Plan during each calendar quarter thereof can be accurately determined. Upon fifteen (15) days prior written notice from Aventis, Neurogen shall permit an independent certified public accounting firm of nationally recognized standing selected by Aventis and reasonably acceptable to Neurogen to examine the relevant books and records of Neurogen and its Affiliates as may be reasonably necessary to verify the accuracy of the reports submitted to Aventis under Section 4.5(b) or 5.4 and the number of Neurogen Researcher FTEs applied to the performance of Neurogen's obligations under the Research Program and, if applicable, the Product Development Plan. An examination under this Section 4.5(d) shall not occur more than once in any calendar year. The accounting firm shall provide both Neurogen and Aventis a written report disclosing whether the reports submitted by Neurogen are correct or incorrect and the specific details concerning any discrepancies. If such examination reveals the actual Neurogen Researcher FTE utilization in the conduct of the Research Program or, if applicable, the Product Development Plan, to be lower than that reported by Neurogen, then Neurogen shall reimburse Aventis for any excess amounts paid by Aventis to Neurogen pursuant to Section 4.5(b) or 5.4 and any such reimbursement will be deducted from any payment to be made under the provisions of the final sentence of Section 4.5(b). In addition, if such examination reveals the actual Neurogen Researcher FTE utilization in the conduct of Neurogen's obligations under the Research Program and, if applicable, the Product Development Plan, to be lower than that reported by Neurogen by ten percent (10%) or more, then Neurogen shall reimburse Aventis for all costs incurred by Aventis in connection with such examination and audit. (ii) Of Aventis. During the term of the Research Program and for a period of three (3) years thereafter, Aventis shall keep and maintain accurate and complete records showing the time devoted and activities performed by each Aventis Personnel in performing Aventis' obligations under the Research Program. Upon fifteen (15) days prior written notice from Neurogen, Aventis shall permit an independent certified public accounting firm of nationally recognized standing selected by Neurogen and reasonably acceptable to Aventis to examine the relevant books and records of Aventis and its Affiliates as may be reasonably necessary to verify the number of Aventis Personnel FTEs applied to the performance of Aventis' obligations under the Research Program and, if applicable, the Product Development Plan. An examination under this Section 4.5(d) shall not occur more than once in any calendar year. The accounting firm shall provide both Neurogen and Aventis a written report disclosing whether the reports submitted by Aventis are correct or incorrect and the specific details concerning any discrepancies. (iii)Retention of Lab Notebooks. During the term of the Research Program and for so long as this Agreement has not been terminated or expired in every country, but for at least 20 years from the date of filing of any patent application pursuant to Article 13 hereof, each Party shall use its best efforts to keep and maintain accurate and complete lab notebooks reflecting the screening and other research and development activities of the Neurogen Researchers and Aventis Personnel under the Research Plan. Upon fifteen (15) days' prior written notice from a Party, the other Party shall permit a Third Party patent expert selected by the first Party and reasonably acceptable to the other Party to examine (at the first Party's sole cost and expense) the relevant lab notebooks of the Neurogen Researchers or Aventis Personnel, as applicable; provided that any such Third Party patent expert shall be required to execute and deliver to the other Party an appropriate confidentiality agreement covering the information contained in the lab notebooks to be examined. 4.6 Invention Assignment Agreements. Each Neurogen Researcher and Aventis Personnel conducting the Research Program will have executed Neurogen's or Aventis' standard non-disclosure and invention assignment agreement, as applicable. 4.7 Reporting and Disclosure. (a) Reports. Prior to each quarterly meeting of the Research Committee, Neurogen and Aventis will each provide the other with written copies of all materials they intend to present at the Research Committee meeting plus, to the extent not set forth in such materials, a written report summarizing any other relevant and material data and information arising out of the conduct of the Research Program. In the event that after receipt of any such report, either Party shall request additional data or information, the Party to whom such request is made shall promptly provide to the other Party such data or information related to the conduct of the Research Program. In furtherance of the foregoing, each Party shall disclose to the other information related to the screening activity of the Party for the preceding quarter with respect to (i) the number of Compounds screened, (ii) the number, structure and screening results of Active Compounds, and of Compounds synthesized at the direction of the Research Committee for the purpose of optimizing any Active Compound and which Compounds synthesized are not Unavailable Compounds, and (iii) the number of Active Compounds that are Unavailable Compounds or Burdened Compounds and the nature of the circumstances resulting in such status. {___________}. Neurogen shall deliver the Neurogen Initial Report prior to the Effective Date. {___________} (b) Quarterly Meetings. At the quarterly meetings of the Research Committee, Aventis and Neurogen will review in reasonable detail (i) all data and information disclosed in accordance with Section 4.7(a), and (ii) all material Joint Technology invented, developed or created by the Parties since the last Quarterly Meeting while pursuing the Research Program. (c) Disclosure. During the term of the Research Program, (i) the Parties will promptly disclose to one another all material Joint Technology, (ii) Neurogen will promptly disclose to Aventis all material Neurogen Contributed Technology and (iii) Aventis will promptly disclose to Neurogen all material Aventis Contributed Technology. 4.8 Materials and Compounds. During the term of this Agreement, each Party will make available to the other Party such quantities of Materials or Compounds that are Controlled by it as shall be reasonably available in excess of its own needs for such other Party to carry out its respective responsibilities under the Research Plan and the Product Development Plan. ARTICLE 5 DEVELOPMENT, MANUFACTURING AND COMMERCIALIZATION 5.1 Aventis Development Responsibilities; Aventis Funding of External Costs. (a) Except as otherwise provided for in Section 5.2 below or as otherwise expressly set forth in this Agreement, Aventis shall be responsible for conducting all clinical development and commercialization activities of Collaboration Products. (b) Aventis will fund all external costs related to carrying out the Product Development Plan which is incurred from and after the Effective Date during the term of this Agreement, where external costs shall mean all out-of-pocket costs and expenses incurred (i.e., paid to all Third Parties or accrued therefor) by Aventis or Neurogen for all studies or activities performed in accordance with the Product Development Plan. Reimbursement of any such costs incurred by Neurogen shall be made by Aventis in accordance with Section 5.4(a) below. 5.2 Neurogen Development Responsibilities. 5.2 Neurogen Development Responsibilities. (a) At the request of the Product Development Committee, Neurogen may conduct, but shall not be required to conduct, a Phase I Study for any EDC Program Compound. In carrying out any such development activities, Neurogen shall (i) use Commercially Reasonable Efforts, (ii) conduct such activities in compliance with all laws applicable to clinical development, including without limitation GLPs and GCPs, and (iii) cooperate with Aventis pursuant to the provisions of Section 5.6 with respect to all regulatory matters. Funding of such activities will be in accordance with Sections 5.1(b) and 5.4(a). (b) In addition to any duties assumed by Neurogen at the request of the Product Development Committee pursuant to Section 5.2(a) above, Neurogen will assist Aventis in Aventis' development activities as reasonably requested by Aventis. If any specific developmental work is agreed by Aventis and Neurogen to be performed by Neurogen, funding of such activities will be in accordance with Sections 5.1(b) and 5.4(a). (c) Notwithstanding this Section 5.2, Aventis may assume, at Aventis' expense, operational responsibility for process development, metabolics, pharmacokinetics, and pharmaceutics with respect to any EDC Program Compound or Collaboration Product. Any and all development activities conducted by Neurogen pursuant to Section 5.2 (a) or (b) above shall be performed pursuant to a budget prepared and approved in advance by the Product Development Committee. 5.3 Aventis Diligence Requirement. {___________} 5.4 Payments and Progress Reports. (a) Payments. Neurogen, within thirty (30) days after the beginning of each calendar quarter, will provide Aventis with a report detailing all external costs incurred by Neurogen after the Effective Date in conducting any development studies for the first EDC Program Candidate and any other activities assigned to Neurogen in accordance with Section 5.2(b) during the previous calendar quarter. Subject to Aventis' right to audit such reports using essentially the procedures set forth in Section 4.5(d), Aventis shall reimburse Neurogen for such external costs within {___________} days of receipt of such report, but in no event exceeding the budget approved by the Product Development Committee for such activities. (b) Progress Reports. Aventis and Neurogen, within thirty (30) days after the beginning of each calendar quarter, will each provide the Product Development Committee with a report summarizing the status of each Party's development activities during the previous calendar quarter, as applicable, for Compounds under development, including but not limited to all EDC Program Candidates, EDC Program Compounds and/or Collaboration Products, provided, however, that either Party's failure to achieve any of the goals or plans set forth in any such summary shall not, in and of itself, constitute a failure by such Party to use Commercially Reasonable Efforts. Such reports to the Product Development Committee shall include information in reasonably sufficient detail to evaluate each Party's compliance with its obligation to use Commercially Reasonable Efforts, and shall include a summary in reasonable detail of any Phase I Study, Phase IIA Study, Phase IIB Study and/or Phase III Study, together with any associated Regulatory Approvals, being conducted and/or sought by such Party, with respect to Collaboration Products. In addition, each Party shall copy the other Party on any Regulatory Filings made by a Party in regard to Collaboration Products. 5.5 Manufacturing. In furtherance of the activities contemplated by this Agreement, as soon as is practicable, the Product Development Committee shall develop and agree upon a transfer plan whereby Neurogen will make available to Aventis any Technology of Neurogen necessary or desirable for Aventis to perform its obligations pursuant to this Article 5. Such transfer plan shall also address transfer to Aventis by CarboGen Laboratories (Aarau) AG and CarboGen Holdings AG (collectively "CarboGen") (and any other Third Party performing manufacturing services for Neurogen) of all manufacturing know how of CarboGen (and any other such Third Party) necessary or desirable for Aventis to perform its obligations pursuant to this Article 5. 5.6 Regulatory Matters. Aventis will have control over, and authority and responsibility for, the regulatory strategies relating to the development and commercialization of all EDC Program Compounds and Collaboration Products. Aventis shall monitor and coordinate all regulatory actions, communications and filings with and submissions to (including supplements and amendments) any Regulatory Authority with respect to any Collaboration Product. Neurogen shall provide to Aventis on a timely basis all necessary information to enable compliance with all regulatory obligations on a global basis, including without limitation, filing updates, information amendments, annual reports, pharmacovigilance filings and investigator notifications. Aventis shall be responsible for interfacing, corresponding and meeting with all Regulatory Authorities with respect to any Collaboration Product. To the extent reasonably practicable and preferably at least thirty (30) days in advance, Aventis shall notify Neurogen of any material meeting with the FDA which is for the purpose of obtaining Regulatory Approval for a Collaboration Product and Neurogen may elect to send one person reasonably acceptable to Aventis to participate as an observer (at Neurogen's sole cost and expense) in such meeting. To the extent reasonably practicable and subject to any Third Party confidentiality obligations, Aventis shall provide Neurogen with drafts of any material documents or correspondence pertaining to a Collaboration Product and prepared for submission to the FDA sufficiently in advance of submission so that Neurogen may review and comment on the substance of such material documents or correspondence. Aventis shall promptly provide Neurogen with copies of any material documents or other correspondence received from the FDA pertaining to a Collaboration Product. If Neurogen has not commented on such material documents or correspondence within five (5) Business Days of provision of such material documents or correspondence to Neurogen, then Neurogen shall be deemed to have no comments on such material documents or correspondence. Aventis agrees to consider all comments in good faith, taking into account the best interests of the Collaboration Product on a global basis. The Parties shall cooperate with each other to provide all reasonable assistance and take all actions reasonably requested by the other Party that are necessary or desirable to comply with any law applicable to any Collaboration Product, including, but not limited to, report adverse drug experience reports (and serious adverse drug experience reports) to Regulatory Authorities. ARTICLE 6 NON-EXCLUSIVE CONSEQUENCE OF CONFIDENTIALITY AND NON-USE VIOLATION 6.1 Certain Remedies. It will likely be impossible to accurately determine monetary damages resulting from violation of certain confidentiality and non-use provisions of this Agreement. Therefore, the following remedies are specifically provided for and shall be in addition to any other remedy available at law or in equity. Should a Party (which for purposes of this Section 6.1 shall include the Party and its Affiliates) develop any Patent Rights that could not have been developed when and how they were but for such Party's violation of the confidentiality and non-use provisions of any of Sections 2.4, 2.5, 4.1(d), 13.2(e)(ii), and 13.7(b) (alone or in combination) and: (a) should such violation involve or result in the characterization of Compound activity at particular target(s), as determined by the final, non-appealable decision of a court of competent jurisdiction, the violating Party shall be required to grant to the other Party a sole and exclusive, perpetual, royalty-free, fully-paid, worldwide right and license (with the right to sublicense) under such Patent Rights to develop, have developed, make, have made, use, import, market, have marketed, offer for sale, sell and have sold any Compound, the primary utility of which as a pharmaceutical agent is because such Compound has such activity at such target(s); (b) should such violation be a violation (as determined by the final, non-appealable decision of a court of competent jurisdiction) of the provisions of Section 2.4 requiring that all optimization work done by the Party other than the Providing Party is to be carried out within the scope of approved specific optimization synthesis plans, the violating Party shall be required to grant to the Providing Party at the Providing Party's request, a sole and exclusive, perpetual, royalty-free, fully-paid, worldwide right and license (with the right to sublicense) under such Patent Rights, to develop, have developed, make, have made, use, import, market, have marketed, offer for sale, sell and have sold, for any use involving any target(s) other than CRF1 Receptors, any Compounds within such Patent Rights that have been demonstrated to be useful as modulators of such targets. The Providing Party may request such a license at any time after such utility has been demonstrated, and, though not necessary to prove that such utility has been demonstrated, such utility will be deemed to have been demonstrated upon the grant of a use patent for such Compound(s) for such utility. ARTICLE 7 INITIAL PAYMENT AND MILESTONE PAYMENTS 7.1 Initial Payment. Aventis agrees to pay Neurogen the sum of {__________} by wire transfer in United States Dollars to the credit of such bank account as may be designated in advance by Neurogen in writing to Aventis within five (5) Business Days after the Effective Date. 7.2 Milestone Payments. Each of the following amounts will be payable by Aventis to Neurogen within thirty (30) calendar days following the occurrence of the specified event: (a) Additional EDC Program Compound Payments. {__________} for each additional EDC Program Compound which is a distinct chemical entity from any previous EDC Program Compound accepted by the Product Development Committee after the first EDC Program Compound so accepted; provided that (i) the aggregate payments to be made pursuant to this Section 7.2(a) shall not exceed {__________} and (ii) the payments to be made pursuant to this Section 7.2(a) shall be paid only once per EDC Program Compound, regardless of whether Aventis pursues the development of additional indications with respect to such Compound. (b) First Collaboration Product Payments. (i) {__________} upon {___________} for the first Phase I Study, it being understood and agreed to that the payment to be made pursuant to this Section 7.2(b)(i) shall be made only with respect to the first Collaboration Product to reach this stage and only with respect to the first indication of such Collaboration Product. (ii) {__________} upon the successful completion of the first proof of concept Phase IIA Study, it being understood and agreed to that the payment to be made pursuant to this Section 7.2(b)(ii) shall be made only with respect to the first Collaboration Product to reach this stage and only with respect to the first indication of such Collaboration Product. (iii){__________} upon {___________} for the first Phase III Study, it being understood and agreed to that the payment to be made pursuant to this Section 7.2(b)(iii) shall be made only with respect to the first Collaboration Product to reach this stage and only with respect to the first indication of such Collaboration Product. (iv) {__________} upon the acceptance for filing of the first NDA with the FDA, it being understood and agreed to that the payment to be made pursuant to this Section 7.2(b)(iv) shall be made only with respect to the first Collaboration Product to reach this stage and only with respect to the first indication of such Collaboration Product. (v) {__________} upon launch of a Collaboration Product following the first NDA approval by the FDA, it being understood and agreed to that the payment to be made pursuant to this Section 7.2(b)(v) shall be made only with respect to the first EDC Program Compound to reach this stage and only with respect to the first indication of such Collaboration Product. (c) Additional Indication Payments. (i) {__________} upon {___________} for each Phase III Study with respect to an indication that is (i) different from an indication for which a payment has already been made pursuant to either Section 7.2 (b)(iii) above or Section 7.2 (c)(i) and (ii) that is significant and commercially viable, such that the payment of milestones under this Section 7.2 (c) and the cost of development for such new indication would be commercially prudent; provided that new formulations, line extensions and formulations targeted at different patient populations for the same therapeutic indications shall not be considered to be "new indications." (ii) {__________} upon the acceptance for filing of each NDA with the FDA with respect to an indication that is (i) different from an indication for which a payment has already been made pursuant to either Section 7.2(b)(iv) above or this Section 7.2 (c)(ii) and (ii) that is significant and commercially viable, such that the payment of milestones under this Section 7.2 (c) and the cost of development for such new indication would be commercially prudent; provided that new formulations, line extensions and formulations targeted at different patient populations for the same therapeutic indications shall not be considered to be "new indications." (iii){__________} upon launch of a Collaboration Product with respect to a new indication that is (i) different from an indication for which a payment has already been made pursuant to either Section 7.2(b)(v) above or this Section 7.2(c)(iii) and (ii) that is significant and commercially viable such that the payment of milestones under this Section 7.2 (c) and the cost of development for such new indication would be commercially prudent; provided that new formulations, line extensions and formulations targeted at different patient populations for the same therapeutic indications shall not be considered to be "new indications." (d) Examples. Examples of the Party's intentions regarding the payment of milestone payments under this Article 7 are illustrated in Schedule 7 attached hereto. ARTICLE 8 ROYALTIES 8.1 Royalty Rates; Terms; Reduction. Aventis will pay to Neurogen Royalties on a Collaboration Product by Collaboration Product basis, as follows: (a) Within thirty (30) days following the First Commercial Sale of a Collaboration Product in each country, Aventis shall give written notice to Neurogen thereof. (b) Subject to the provisions of this Article 8, for each Collaboration Product Aventis shall pay to Neurogen Royalties on a Collaboration Product by Collaboration Product basis based on the aggregate worldwide Net Sales by Aventis or its Affiliates or sublicensees of such Collaboration Product, as follows: (i) {__________} of that portion of aggregate Net Sales of the Collaboration Product, up to and including {__________} in a calendar year. (ii) {__________} of that portion of aggregate Net Sales of the Collaboration Product that are greater than {__________}, but less than or equal to {__________}, in a calendar year. (iii){__________} of that portion of aggregate Net Sales of the Collaboration Product that are greater than {__________}, but less than or equal to {__________}, in a calendar year. (iv) {__________} of that portion of aggregate Net Sales of the Collaboration Product that are greater than {__________} in a calendar year. Royalties shall be payable on a country-by-country basis for the term of any CRF1 Patent Rights with a Valid Claim covering composition of matter or therapeutic use of such Collaboration Product or which enables Aventis or its Affiliates to prevent Third Parties from manufacturing, using or selling such Collaboration Product; {___________}. (c) The Royalties set forth above shall be subject to the following reductions: (i) Aventis may deduct {__________} of any payments made to Third Parties related to {__________}; provided, that notwithstanding the foregoing reductions, in no event shall the weighted average royalties payable to Neurogen in any calendar quarter in any such country be reduced by more than {__________} as a result of any such reduction; and (ii) in any country or countries where Aventis reasonably demonstrates to Neurogen that a lower royalty rate is required in order to permit Aventis, {___________}, to commercialize the Collaboration Product with a reasonable profit, then the Parties shall negotiate in good faith, for a period of thirty (30) days, to determine an appropriate reduction to the royalty rate for such Collaboration Product in such country or countries; provided, however, that neither Party shall be obligated to agree to a particular level of royalty reduction; provided, further, that in the event the Parties are unable to agree on such reduction, Aventis shall have no obligation to launch, or continue its commercialization of, such Collaboration Product in such country or countries. All such computations, payments and adjustments shall be on a country-by-country basis. Aventis will provide to Neurogen a copy of any license (or amendment thereto) obtained pursuant to 8.1(c)(i) above within thirty (30) days of executing any such license (or amendment). (d) Notwithstanding any other provision in this Agreement to the contrary, Aventis shall have no obligation to make a First Commercial Sale of any Collaboration Product in any country or to continue its commercialization of any Collaboration Product in any country if commercialization in such country is incompatible with Commercially Reasonable Efforts. Such incompatibility may be due to one of several factors, including (i) financial factors that would prevent such commercialization from being profitable, or to (ii) the requirements of a Regulatory Agency of such country that Aventis make public sensitive Aventis Confidential Information, but then only if Aventis has discontinued making First Commercial Sales of any other comparable Aventis product in such country for such reason. (e) For the first three calendar quarters of a calendar year, the calculation of Royalties will be based on an estimated effective Weighted Average Royalty Rate. Such estimated effective Weighted Average Royalty Rate will be based on the Aventis business plan forecast for that calendar year. These Royalties will be calculated by applying the actual effective Weighted Average Royalty Rate percentage to the Net Sales for the full calendar year and by then subtracting the Royalties made for the prior three calendar quarters. By way of example, if, for a given year, the Aventis business plan forecast calls for Aventis to achieve {__________} of Net Sales for a Collaboration Product, the estimated effective Weighted Average Royalty Rate would be {__________}. The total expected Royalty payment due to Neurogen for the year would equal {----------}. Further, if (A) in the course of the first three quarters, Aventis achieves actual Net Sales of {__________}, respectively, during the first, second and third calendar quarters, and Aventis pays Neurogen Royalties of {__________} respectively (e.g., {__________}), and (B) in the fourth calendar quarter, Aventis achieves Net Sales of {__________}, bringing the total Net Sales for the year to {__________}, then (C) for the full calendar year, the actual effective Weighted Average Royalty Rate would be {__________}) and the total Royalty payment due to Neurogen for the year would be {__________}. Having paid Neurogen {__________} for the first three calendar quarters, Aventis would pay Neurogen {__________} for the last calendar quarter {__________}. (f) Neurogen acknowledges and agrees that nothing in this Agreement shall be construed as representing an estimate or projection of either (i) the number of Collaboration Products that will or may be successfully developed or commercialized or (ii) anticipated sales or the actual value of any EDC Program Compound or Collaboration Product and that the figures set forth in this Section 8.1 or elsewhere in this Agreement or that have otherwise been discussed by the Parties are merely intended to define Aventis' royalty obligations to Neurogen in the event such sales performance is achieved. 8.2 Reports and Payments. (a) Cumulative Royalties. The obligation to pay Royalties under this Article 8 shall be imposed only once (i) with respect to any sale of the same unit of Collaboration Product and (ii) with respect to a single unit of Collaboration Product regardless of how many Valid Claims or other Patent Rights included in the Neurogen Contributed Technology, Aventis Contributed Technology or Joint Technology would, but for this Agreement, be infringed by the making, using or selling of such Collaboration Product. (b) Statements and Payment. Within fifteen (15) days after the beginning of each calendar quarter, Aventis will provide to Neurogen an estimate of the Royalty due hereunder for the sale of Collaboration Products during the previous quarter. Aventis shall deliver to Neurogen within forty-five (45) days after the end of each calendar quarter a report setting forth for such calendar quarter the following information on a Collaboration Product by Collaboration Product basis: (i) Net Sales of such Collaboration Product on a country-by-country basis, (ii) the basis for any adjustments to the Royalty payable for the sale of such Collaboration Product in any country and (iii) the Royalty due hereunder for the sale of such Collaboration Product. The total Royalty due for the sale of Collaboration Products during such calendar quarter shall be remitted at the time such report is made. 8.3 Taxes and Withholding. Any payments made by Aventis to Neurogen under this Agreement shall be reduced by the amount that Aventis is required to pay or withhold pursuant to any applicable law, including, but not limited to, United States federal, state or local tax law ("Withholding Taxes"). Any such Withholding Taxes required by law to be paid or withheld shall be an expense of, and borne solely by, Neurogen. Aventis shall submit reasonable proof of payment of the Withholding Taxes together with an accounting of the calculations of such taxes to Neurogen within thirty (30) days after such Withholding Taxes are remitted to the proper authority. The Parties will reasonably cooperate in completing and filing documents required under the provisions of any applicable tax laws or under any other applicable law in connection with the making of any required tax payment or withholding payment, or in connection with any claim to a refund of or credit for any such payment. 8.4 Currency Exchange. With respect to Net Sales invoiced or expenses incurred in U.S. dollars, the Net Sales or expense amounts and the amounts due to Neurogen hereunder shall be expressed in U.S. dollars. With respect to Net Sales invoiced or expenses incurred in a currency other than U.S. dollars, the Net Sales or expense shall be expressed in the domestic currency of the entity making the sale or incurring the expense, together with the U.S. dollar equivalent, calculated using the arithmetic average of the spot rates on the last business day of each month of the calendar quarter in which the Net Sales were made or the expense was incurred. The "closing mid-point rates" found in the "Dollar spot forward against the Dollar" table published by The Financial Times or any other publication as agreed to by the Parties shall be used as the source of spot rates to calculate the average as defined in the preceding sentence. All payments shall be made by wire transfer in U.S. dollars to the credit of such bank account as shall be designated by Neurogen in writing to Aventis. 8.5 Maintenance of Records; Audit. For a period of three (3) years, Aventis shall maintain and shall cause its Affiliates and sublicensees to maintain complete and accurate books and records in connection with the sale of Collaboration Products hereunder, as necessary to allow the accurate calculation consistent with generally accepted accounting principles of Royalties due hereunder including any records required to calculate any Royalty adjustments hereunder. Once per calendar year, Neurogen shall have the right to engage an independent accounting firm reasonably acceptable to Aventis, at Neurogen's expense, which shall have the right to examine in confidence the relevant Aventis records as may be reasonably necessary to determine and/or verify the amount of Royalty payments due hereunder. Such examination shall be conducted, and Aventis shall make its records available, during Aventis' normal business hours, after at least fifteen (15) days prior written notice to Aventis and shall take place at the Aventis facility(ies) where such records are maintained. Each such examination shall be limited to pertinent books and records for any year ending not more than thirty-six (36) months prior to the date of request; provided, that Neurogen shall not be permitted to audit the same period of time more than once. Before permitting such independent accounting firm to have access to such books and records, Aventis may require such independent accounting firm and its personnel involved in such audit, to sign a confidentiality agreement (in form and substance reasonably acceptable to Aventis) as to any of Aventis', its Affiliates or sublicensees' confidential information which is to be provided to such accounting firm or to which such accounting firm will have access, while conducting the audit under this Section 8.5. The Neurogen independent accounting firm will prepare and provide to both Neurogen and Aventis a written report disclosing whether the Royalty reports submitted and Royalties paid by Aventis are correct or incorrect and the specific details concerning any discrepancies. Such accounting firm may reveal to Neurogen any information learned in the course of such audit which it reasonably believes is relevant to the calculation of royalties or to Neurogen's enforcement of its rights under this Agreement. Neurogen agrees to hold in strict confidence all such information disclosed to it, except to the extent necessary for Neurogen to enforce its rights under this Agreement or if disclosure is required by law. In the event there was an under-payment by Aventis hereunder, Aventis shall promptly (but in no event later than thirty (30) days after Aventis' receipt of the independent auditor's report so correctly concluding) make payment to Neurogen of any short-fall. In the event that there was an over-payment by Aventis hereunder, Neurogen shall promptly (but in no event later than thirty (30) days after Neurogen's receipt of the independent auditor's report so correctly concluding) refund to Aventis the excess amount. In the event any payment by Aventis shall prove to have been incorrect by more than ten percent (10%) to Neurogen's detriment, Aventis will pay the reasonable fees and costs of Neurogen's independent auditor for conducting such audit. ARTICLE 9 REPRESENTATIONS, WARRANTIES AND COVENANTS 9.1 Mutual Representations and Warranties. Each Party hereby represents, warrants and covenants to the other Party that: (a) such Party is a corporation duly organized, validly existing and in good standing under the laws of the state or other jurisdiction of incorporation or formation and has full corporate power and authority to enter into this Agreement and to carry out the provisions hereof; (b) such Party is duly authorized, by all requisite corporate action, to execute and deliver this Agreement and the execution, delivery and performance of this Agreement by such Party does not require any shareholder action or approval, and the Person executing this Agreement on behalf of such Party is duly authorized to do so by all requisite corporate action; (c) no consent, approval, order or authorization of, or registration, qualification, designation, declaration or filing with, any federal, state or local governmental authority is required on the part of such Party in connection with the valid execution, delivery and performance of this Agreement, except where the failure to obtain any of the foregoing would not have a material adverse impact on the ability of such Party to meet its obligations hereunder; (d) this Agreement is a legal and valid obligation binding upon such Party and enforceable in accordance with its terms except as (i) enforceability may be limited by bankruptcy, insolvency, reorganization, moratorium or similar laws affecting the enforcement of creditors' rights and (ii) equitable principles of general applicability; (e) the execution, delivery and performance by it of this Agreement and its compliance with the terms and provisions of this Agreement does not and will not conflict with or result in a breach of any of the terms or provisions of (x) any other contractual or other obligations of such Party, (y) the provisions of its charter, operating documents or bylaws, or (z) any order, writ, injunction or decree of any court or governmental authority entered against it or by which it or any of its property is bound except where such breach or conflict would not materially impact the Party's ability to meet its obligations hereunder; (f) it shall comply in all material respects with all laws, rules and regulations applicable to the discovery, development, manufacture, distribution, import and export and sale of products or potential products under this Agreement; (g) NEITHER PARTY MAKES ANY EXPRESS OR IMPLIED WARRANTY OF MERCHANTABILITY, FITNESS FOR A PARTICULAR USE OR PURPOSE, QUALITY OR USEFULNESS OF ANY ACTIVE COMPOUND, HIT PROGRAM COMPOUND, LEAD PROGRAM COMPOUND, EDC CANDIDATE COMPOUND, EDC PROGRAM COMPOUND, COLLABORATION PRODUCT, AVENTIS CONTRIBUTED TECHNOLOGY, NEUROGEN CONTRIBUTED TECHNOLOGY, JOINT TECHNOLOGY, OR PATENT RIGHTS AND OTHER INTELLECTUAL PROPERTY RIGHTS RESULTING FROM THE COLLABORATION CONTEMPLATED IN THIS AGREEMENT. EXCEPT AS OTHERWISE SPECIFICALLY PROVIDED IN THIS AGREEMENT, NEUROGEN SHALL NOT BE LIABLE TO AVENTIS WITH RESPECT TO THE MANUFACTURE, USE OR SALE OF ANY COLLABORATION PRODUCT. 9.2 Additional Neurogen Representations, Warranties and Covenants. Neurogen represents, warrants and covenants to Aventis that, except to the extent that it would have no material adverse effect on the rights and obligations of the Parties contemplated under this Agreement: (a) it has the full right, power and authority to grant the licenses granted to Aventis under Article 2 hereof with respect to the Neurogen Contributed Technology which exists on the Effective Date; (b) all Patent Rights listed as of the Effective Date on Schedule 1.56 are attached hereto as Schedule 9.2(b) and, as of the Effective Date, such Patent Rights are existing and, to its best knowledge, are not invalid or unenforceable, in whole or in part; (c) (i) to the best of its knowledge, as of the Effective Date it is the sole and exclusive owner of the Patent Rights set forth in Schedule 9.2(b), and (ii) to the best of its knowledge, as of the Effective Date, no Third Party has any right, title or interest in or to the CRF1 Patent Rights within the Patent Rights set forth in Schedule 9.2(b); (d) as of the Effective Date (i) all inventors (who are known to Neurogen as of the Effective Date) of any inventions included within the Neurogen Contributed Technology have assigned their entire right, title and interest in and to such inventions and the corresponding Patent Rights to Neurogen and (ii) to the best knowledge of Neurogen after an inquiry effort (made prior to the filing of the relevant patent application in the United States Patent and Trademark Office) commensurate with that required by 37 CFR10.18(b)(2)(iii), no Person, other than those Persons named as inventors on any patent or patent application included within the Neurogen Contributed Technology, is an inventor of the invention(s) claimed in such patent or patent application; (e) as of the Effective Date, there are no claims, judgments or settlements against or owed by Neurogen or pending or, to its best knowledge, threatened claims or litigation seeking to invalidate the Neurogen Contributed Technology and during the term of this Agreement Neurogen shall promptly notify Aventis in writing upon learning of any such actual or threatened claim, judgment or settlement; (f) as of the Effective Date it has no knowledge that making, using or selling EDC Program Candidates as pharmaceutical products may or do infringe the valid Patent Rights of any Third Party, nor does it have any knowledge that any Third Party is infringing Neurogen's Patent Rights relating thereto; (g) as of the Effective Date it is not aware of any patent, patent application or other intellectual property right of any Third Party which, in Neurogen's reasonable opinion could materially adversely affect the ability of either Party to carry out its respective obligations hereunder or the ability of Aventis to exercise or exploit any of the rights or licenses granted to it under this Agreement; (h) except as otherwise specifically provided in this Agreement, Neurogen makes no express or implied warranties, statutory or otherwise, concerning the success or potential success of the Research Program or the quality, validity, commercial utility, freedom from infringement or any other characteristics of any Active Compound, Hit Program Compound, Lead Program Compound, EDC Program Candidate, EDC Program Compound, Collaboration Product, Neurogen Contributed Technology, Patent Rights or intellectual property rights resulting from the collaboration contemplated in this Agreement. 9.3 Non-Solicitation. During the term of the Research Program, and for a period of one (1) year thereafter, neither Party (which for purposes of this Section 9.3 includes a Party and its Affiliates) shall either directly or indirectly solicit, recruit, induce, encourage or attempt to solicit, recruit, induce or encourage any employee of the other Party to terminate his or her employment relationship with such other Party and become employed by the other Party or become employed by an independent contractor for such other Party whether or not such employee is a full-time employee of such other Party and whether or not such employment relationship is pursuant to a written agreement or is at-will. ARTICLE 10 CONFIDENTIALITY, PUBLICATION AND PUBLIC ANNOUNCEMENTS 10.1 Confidentiality. Except to the extent expressly authorized by this Agreement or otherwise agreed in writing, the Parties agree that, until the later of (i) the termination this Agreement or (ii) {_________} years after the date of disclosure, each Party (the "Recipient") receiving hereunder or under the Secrecy Agreement between Neurogen and Aventis dated October 5, 2000, (as amended by amendments dated January 25, 2001, July 12, 2001, and December 7, 2001) or under the Confidential Disclosure Agreement between Neurogen and Aventis dated June 26, 2001, or received or generated pursuant to the Material Transfer Agreement between Neurogen and Aventis dated November 19, 2001, any Confidential Information of the other Party (the "Disclosing Party") shall keep such information confidential and shall not publish or otherwise disclose or use for any purpose other than as provided for in this Agreement, except to the extent that it can be established: (a) by the Recipient that the Confidential Information was already known to the Recipient (other than under an obligation of confidentiality) at the time of disclosure by the Disclosing Party, and such Recipient can so demonstrate by documentary evidence to that effect; (b) by the Recipient that the Confidential Information was generally available to the public or otherwise part of the public domain at the time of its disclosure to the Recipient; (c) by the Recipient that the Confidential Information became generally available to the public or otherwise part of the public domain after its disclosure and other than through any act or omission in breach of a confidentiality obligation; (d) by the Recipient that the Confidential Information was disclosed to that Party other than under an obligation of confidentiality by a Third Party who had no obligation to the Disclosing Party not to disclose such information to others; or (e) by the Recipient that the Confidential Information was independently discovered or developed by the Recipient without the use of the Confidential Information belonging to the other Party and the Recipient can so demonstrate by documentary evidence to that effect. 10.2 Authorized Disclosure. Each Party may disclose Confidential Information belonging to the other Party to the extent such disclosure is reasonably necessary to: (a) file or prosecute patent applications claiming inventions included within, in the case of Neurogen, the Neurogen Contributed Technology, and in the case of Aventis, the Aventis Contributed Technology, or, in the case of either Party, the Joint Technology, (b) prosecute or defend litigation, (c) exercise rights hereunder provided such disclosure is covered by terms of confidentiality similar to those set forth herein, and (d) comply with applicable governmental laws and regulations, order, ruling, guidance, pronouncement and the like. In the event a Party shall deem it necessary to disclose, pursuant to this Section 10.2, Confidential Information belonging to the other Party, such Party shall, to the extent possible, give reasonable advance notice of such disclosure to the other Party and cooperate with the other Party to take reasonable measures to ensure confidential treatment of such information. 10.3 SEC Filings. The Parties will agree in advance with each other on the terms of this Agreement which the Parties agree to seek to be redacted in any SEC filings. 10.4 Publications. During the term of the Agreement, each Party will submit to the other Party for review and approval all proposed academic, scientific and medical publications relating to the Research Program, EDC Program Compounds, Collaboration Products, Neurogen Contributed Technology, Aventis Contributed Technology and Joint Technology for review in connection with preservation of exclusive Patent Rights or to determine whether Confidential Information should be modified or deleted. The non-publishing Party shall have no less than sixty (60) days to review each proposed publication. The review period may be extended for an additional thirty (30) days in the event the non-publishing Party can demonstrate a reasonable need for such extension including, but not limited to, the preparation and filing of patent applications. By mutual agreement, this period may be further extended. Aventis and Neurogen will each comply with standard academic practice regarding authorship of scientific publications and recognition of contribution of other parties in any publications relating to Research Program, EDC Program Compounds, Collaboration Products, Neurogen Contributed Technology, Aventis Contributed Technology and Joint Technology; it being agreed to and understood that, where proper, such publications relating to the Research Program shall be joint publications. 10.5 Public Announcements. It is agreed and understood that each Party is a publicly owned company and, as such, may be required to make prompt public announcements of material information. The Parties agree on the importance of coordinating their public announcements respecting this Agreement and the subject matter thereof. Neither Party will make any public announcement regarding this Agreement, the Research Program, EDC Program Compounds, Collaboration Products, Neurogen Contributed Technology, Aventis Contributed Technology or Joint Technology (other than academic, scientific or medical publications which are subject to the publication provision set forth above) without using its best efforts to give the other Party at least five (5) Business Days to review, comment on and approve such public announcement, or the maximum such lesser time as may be necessary under an emergency situation. ARTICLE 11 INDEMNIFICATION 11.1 Aventis. Aventis agrees to defend Neurogen and its Affiliates at Aventis' cost and expense, and will indemnify and hold Neurogen and its Affiliates and their respective directors, officers, employees and agents (the "Neurogen Indemnified Parties") harmless from and against any and all losses, costs, damages, fees or expenses (including reasonable attorney's fees and expenses) ("Losses") incurred in connection with or arising out of any Third Party claim relating to (i) any material breach by Aventis of any of its material representations, warranties or obligations pursuant to this Agreement, (ii) any gross negligence or willful misconduct of Aventis in the performance of any right or obligation under this Agreement, or (iii) any product liability, clinical trial liability or other claims arising from the use by any person of any Collaboration Product or any drug candidate being developed as a Collaboration Product, in each case other than any Competing Products and products developed or commercialized from a Compound returned to Neurogen pursuant to Article 5 or Article 12. In the event of any such claim against the Neurogen Indemnified Parties by any Third Party, Neurogen shall promptly notify Aventis in writing of the claim, the Neurogen Indemnified Parties shall cooperate with Aventis in the defense of such claim and Aventis shall manage and control, at its sole expense, the defense of the claim and its settlement; provided that Aventis shall not agree to any settlement that would admit liability on the part of Neurogen or involve relief other than the payment of money, without the approval of Neurogen, not to be unreasonably withheld, and; provided further, that if the interests of a Neurogen Indemnified Party and Aventis conflict, the Neurogen Indemnified Party shall be allowed to control its own defense (including obtaining separate legal counsel, the reasonable and necessary expenses and costs of which, with respect to one additional such counsel, will be borne by Aventis). Any Neurogen Indemnified Party whose interests do not conflict with those of Aventis may also elect at its own expense to be represented separately in any such action or proceeding. Aventis shall not be liable for any litigation costs or expenses incurred by a Neurogen Indemnified Party unless such costs and expenses are authorized in writing in advance by Aventis or are the reasonable and necessary expenses of a Neurogen Indemnified Party with whom Aventis has a conflict of interest. In addition, Aventis shall not be responsible for the indemnification or defense of any Neurogen Indemnified Party from and against any Losses to the extent any such Losses are caused by the gross negligence or willful misconduct of such Neurogen Indemnified Party in the performance of any right or obligation under this Agreement or the material breach by Neurogen of any representation, warranty or obligation under this Agreement, or any claims compromised or settled without its prior written consent. 11.2 Neurogen. Neurogen agrees to defend Aventis and its Affiliates at Neurogen's cost, and will indemnify and hold Aventis and its Affiliates and their respective directors, officers, employees and agents (the "Aventis Indemnified Parties") harmless from and against any and all losses, costs, damages, fees or expenses (including reasonable attorneys' fees and expenses) arising out of any Third Party claim relating to (i) any material breach by Neurogen of any of its material representations, warranties or obligations pursuant to this Agreement, (ii) any gross negligence or willful misconduct of Neurogen in the performance of any right or obligation under this Agreement, or (iii) any product liability, clinical trial liability or other claim arising from the use by any person of any Competing Product or any drug candidate being developed as a Competing Product or other product developed or commercialized from a Compound returned to Neurogen pursuant to Article 5 or Article 12. In the event of any such claim against the Aventis Indemnified Parties by any Third Party, Aventis shall promptly notify Neurogen in writing of the claim and the Aventis Indemnified Parties shall cooperate with Neurogen in the defense of such claim and Neurogen shall manage and control, at its sole expense, the defense of the claim and its settlement; provided that Neurogen shall not agree to any settlement that would admit liability on the part of Aventis or involve relief other than the payment of money, without the approval of Aventis, not to be unreasonably withheld, and; provided further, that if the interests of an Aventis Indemnified Party and Neurogen conflict, the Aventis Indemnified Party shall be allowed to control its own defense (including obtaining separate legal counsel, the reasonable and necessary expenses and costs of which, with respect to one additional such counsel, will be borne by Neurogen). Any Aventis Indemnified Party whose interests do not conflict with those of Neurogen may also elect at its own expense to be represented separately in any such action or proceeding. Neurogen shall not be liable for any litigation costs or expenses incurred by an Aventis Indemnified Party unless such costs and expenses are authorized in writing in advance by Neurogen or are the reasonable and necessary expenses of an Aventis Indemnified Party with whom Neurogen has a conflict of interest. In addition, Neurogen shall not be responsible for the indemnification or defense of any Aventis Indemnified Party from and against any Losses, to the extent any such Losses are caused by the gross negligence or willful misconduct of such Aventis Indemnified Party in the performance of any right or obligation under this Agreement, or the material breach by Aventis of any representation, warranty or obligation under this Agreement, or any claims settled without its prior written consent. 11.3 Insurance Proceeds. Any indemnification hereunder shall be made net of any insurance proceeds recovered by the indemnified Party; provided, however, that if, following the payment to the indemnified Party of any amount under this Article 11, such indemnified Party recovers any insurance proceeds in respect of the claim for which such indemnification payment was made, the indemnified Party shall promptly pay an amount equal to the amount of such proceeds (but not exceeding the amount of such indemnification payment) to the indemnifying Party. 11.4 Insurance. Each Party further agrees to use its Commercially Reasonable Efforts to obtain and maintain commercial general liability insurance, including clinical trials and products liability insurance, with reputable and financially secure insurance carriers or self-insurance, in such amounts and subject to such deductibles as the Parties may agree based upon standards prevailing in the industry at the time. Each Party agrees to name the other as an additional insured under such insurance. Each Party shall maintain such insurance for so long as Collaboration Products continue to be developed, manufactured or sold and thereafter for so long as is necessary to cover any and all Third Party claims which may arise from the development, manufacture or sale of a Collaboration Product. ARTICLE 12 TERM AND TERMINATION 12.1 Term. (a) Unless earlier terminated by mutual agreement of the Parties or pursuant to the provisions of this Article 12, this Agreement will continue in full force and effect on a country-by-country and product-by-product basis until the obligation to pay Royalties with respect to the sale of such product in such country expires or is earlier terminated in accordance with the terms hereof. (b) On a country-by-country basis and on a product-by-product basis, upon the scheduled expiration (as contemplated in Section 8.1(b)) of the obligation to pay Royalties with respect to the sale of such product in such country, the licenses granted hereunder shall become fully paid up, royalty-free, perpetual and irrevocable. 12.2 Voluntary Termination by Aventis. At any time, Aventis may elect to irrevocably terminate this Agreement upon ninety (90) days prior written notice to Neurogen. 12.3 Material Breach. Upon a material breach of this Agreement by Aventis or Neurogen (in such capacity, the "Breaching Party"), the other Party (in such capacity, the "Non-Breaching Party") may provide written notice (a "Breach Notice") to the Breaching Party specifying the material breach. If the Breaching Party fails to cure such material breach during the ninety (90) day period (or, if applicable, such longer period, but not to exceed one hundred and eighty (180) days, as would be reasonably necessary for a diligent party to cure such material breach, provided the Breaching Party has commenced and continues its diligent efforts to cure, and provided further, that the Parties shall use reasonable efforts to work together to cure any such material breach) following the date on which the Breach Notice is provided, then the provisions of Section 12.4 (b), (c), (d), (e) or (f) shall apply as applicable. The Parties acknowledge and agree that (i) an act or omission for which Neurogen has made a {___________} shall not constitute a basis for a claim by Neurogen of a breach of this Agreement by Aventis; {___________}. 12.4 Consequences of Termination or Material Breach. (a) Voluntary Termination by Aventis pursuant to Section 12.2. In the event this Agreement is voluntarily terminated by Aventis pursuant to Section 12.2, then on or before the effective date of termination: (i) Aventis shall pay Neurogen in one lump payment an amount equal to {__________} on an annual basis for each of the Neurogen Researcher FTEs specified to be devoted to the Research Plan for the {___________} following the delivery of Aventis' written notice to Neurogen; provided that, in the event that such termination notice is delivered to Neurogen prior to the completion of the first year of this Agreement, then such payment shall be made on a pro rata basis for each month remaining in such year that has not already been funded by Aventis, and for the {___________}; and Aventis shall have no other funding obligation going forward for the Research Program; (ii) Subject to Section 12.4(a)(xi) below, all licenses granted pursuant to Sections 2.1 and 2.2 will terminate; (iii)Aventis will, within thirty (30) days of the notice provided for in Section 12.2, disclose to Neurogen all Joint Technology, Joint Confidential Information and Aventis Contributed Technology in Aventis' or any of its Affiliate's possession and not previously disclosed to Neurogen, including without limitation the list required by Section 13.7; (iv) Subject to Section 12.4(a)(xi) below, Aventis and its Affiliates, as the case may be, will grant to Neurogen, at Neurogen's request, the following licenses: (A) a sole and exclusive, perpetual, irrevocable, royalty-free, worldwide right and license under (I) the Aventis Contributed Technology and Aventis' or any of its Affiliates' interest in the Joint Technology and Joint Confidential Information, to the extent and only to the extent that such Aventis Contributed Technology or Joint Technology relate to the composition or use of CRF1 Receptor Antagonist/Agonists, {___________} and Aventis' or any of its Affiliates' interest (if any) in the Neurogen Contributed Technology, in each case to research, develop, have developed, make, have made, use, import, market, have marketed, offer for sale, sell and have sold, any pharmaceutical product which contains a CRF1 Receptor Antagonist/Agonist as an active ingredient; and (B) a perpetual, irrevocable, royalty-free, worldwide right and license under the Aventis Contributed Technology, Aventis' or any of its Affiliates' interest in the Joint Technology and Joint Confidential Information, other than to the extent that such Aventis Contributed Technology, Joint Technology or Joint Confidential Information relate to the composition or use of CRF1 Receptor Antagonist/Agonists, in each case to research, develop, have developed, make, have made, use, import, market, have marketed, offer for sale, sell and have sold, any pharmaceutical product which contains a CRF1 Receptor Antagonist/Agonist as an active ingredient {-----------}; (v) {___________}. Aventis and its Affiliates shall continue to cooperate with such filing, prosecution and maintenance in a manner consistent with Section 13.2(d), and Neurogen shall assume the costs going forward of all filing, prosecution and maintenance of such CRF1 Patent Rights that had been undertaken by either Party under the provisions of Article 13. Neurogen shall provide Aventis with information regarding such Patent Rights so transferred in a manner consistent with Section 13.2(d) and if Neurogen declines to prepare, file, prosecute or maintain such Patent Rights, then Aventis may, with respect to any of such Patent Rights as Aventis may determine in its sole discretion, do so at Aventis' expense; (vi) Subject to Section 12.4(a)(xi), upon Neurogen's request, Aventis shall grant to Neurogen an exclusive, world-wide license to utilize any Marks which were used primarily to market Collaboration Products in return for a Royalty from Neurogen to Aventis of {__________} of Net Sales of such products sold by Neurogen or any of its Affiliates, licensees or sublicensees using any such Marks; (vii) {___________}; (viii) for clarity, it is understood and agreed that: (A) {___________}; and (B) at any time following a termination by Aventis pursuant to Section 12.2, Aventis may utilize on a perpetual, irrevocable, worldwide, royalty-free basis the Aventis Contributed Technology, Aventis' interest in the Joint Technology and Joint Confidential Information to research, develop, have developed, make, have made, use, import, market, have marketed, offer for sale, sell and have sold any pharmaceutical product which does not contain a CRF1 Receptor Antagonist/Agonist as an active ingredient. (ix) Subject to Section 12.4(a)(xi), it is agreed and understood that, in the event that Aventis terminates this Agreement under Section 12.2, Aventis shall provide or transfer to Neurogen or any sublicensee of Neurogen, at Neurogen's request and expense, any preclinical data, clinical data or regulatory submissions relating to any EDC Program Compounds and Collaboration Products; (x) the lock-up provisions of Section 2.4 shall survive any termination of this Agreement; and (xi) {___________}: (A) {___________} (B) {___________} (b) Rights of Aventis in the Event of Neurogen Breach with respect to the Research Program. If a material breach relates to Neurogen's obligations under the Research Program and is not cured in accordance with the provisions of Section 12.3, then Aventis may, upon written notice to Neurogen, elect to accelerate the conclusion of the Research Program to any date at Aventis' option. Upon such conclusion of the Research Program, this Agreement shall continue in full force and effect with respect to Aventis' further development and commercialization (including the payment of Milestones and Royalties) of Collaboration Products. For purposes of clarity, if Aventis elects to so accelerate the conclusion of the Research Program, then, upon such conclusion: (i) Aventis will have no further funding obligations for and Neurogen will have no further obligations to perform research with respect to the Research Program after such conclusion; (ii) all licenses granted pursuant to Section 2.2 will terminate; (iii)the provisions of Section 2.4 will continue to apply until one year after what would have been the entire Initial Term (and the entire Extension Term, if already commenced) as if the conclusion of the Research Program had not been accelerated. (c) Rights of Aventis in the Event of Neurogen's Breach with respect to the Development and Commercialization of Collaboration Products. If the material breach relates to any of Neurogen's obligations under this Agreement with respect to the development and commercialization of Collaboration Products and is not cured in accordance with the provisions of Section 12.3, then this Agreement shall continue in full force and effect, including with respect to Aventis' further development and commercialization (including the payment of Milestones and Royalties) of Collaboration Products, and: (i) in the event the material breach occurs during the term of the Research Program, Aventis shall have the rights and the Parties shall both have the obligations set forth in Section 12.4(b); (ii) the provisions of Sections 2.4, 2.5, and 2.6 shall continue to apply; and (iii) {___________}. (d) Rights of Neurogen in the Event of Aventis' Breach with respect to Research Program. If the material breach relates to Aventis' obligations under the Research Program and is not cured in accordance with the provisions of Section 12.3, then Neurogen may, upon written notice to Aventis, elect to accelerate the conclusion of the Research Program to any date at Neurogen's option. Upon such conclusion of the Research Program, this Agreement shall continue in full force and effect with respect to Aventis' further development and commercialization (including the payment of Milestones and Royalties) of Collaboration Products. For purposes of clarity, if Neurogen elects to so accelerate the conclusion of the Research Program, then, upon such conclusion: (i) Aventis will have no further funding obligations for and Neurogen will have no further obligations to perform research with respect to the Research Program after such conclusion (ii) the licenses granted pursuant to Section 2.2 will terminate; and (iii)the provisions of Section 2.4 shall continue to apply until one year after what would have been the entire Initial Term (and the entire Extension Term, if already commenced) as if the conclusion of the Research Program had not been accelerated. (e) Rights of Neurogen for Aventis' Breach with respect to the Development and Commercialization of Collaboration Products. If the material breach relates to Aventis' obligations with respect to the development and commercialization of Collaboration Products, then Neurogen may, upon written notice to Aventis, terminate this Agreement and the right to further develop and commercialize all Collaboration Products shall be transferred to Neurogen provided, however, that if at the time of the termination, Aventis is conducting marketing or clinical development of one or more Collaboration Products for indications that are not the subject of any material breach, then any such termination shall not apply to such Collaboration Products ("Retained Collaboration Products") and Aventis shall retain the rights and licenses necessary to continue the marketing and clinical development as contemplated in this Agreement of such Retained Collaboration Products and the diligence, milestone payment and Royalty obligations relating thereto shall survive such termination. For purposes of clarity, any such termination will include the termination of the licenses granted by Neurogen to Aventis pursuant to Sections 2.1 (except to the extent necessary for Aventis to develop and commercialize Retained Collaboration Products) and 2.2. In addition: (i) Aventis will disclose to Neurogen all Joint Technology, Joint Confidential Information and Aventis Contributed Technology in Aventis' possession and not previously disclosed to Neurogen; (ii) Aventis will grant to Neurogen a sole and exclusive perpetual, irrevocable, royalty-free, fully-paid, worldwide license, with right to sublicense, under Aventis' interest in the Joint Technology, the Aventis Contributed Technology and any CRF1 Patent Rights (except to the extent necessary for Aventis to develop and commercialize Retained Collaboration Products), and Aventis' interest (if any) in the Neurogen Contributed Technology to research, have researched, develop, have developed, make, have made, use, import, market, offer for sale and sell, any pharmaceutical product that contains a CRF1 Receptor Antagonist/Agonist as an active ingredient other than a Retained Collaboration Product; (iii){___________}. Aventis and its Affiliates shall continue to cooperate with such filing, prosecution and maintenance in a manner consistent with Section 13.2(d), and Neurogen shall assume the costs going forward of all filing, prosecution and maintenance of such CRF1 Patent Rights that had been undertaken by either Party under the provisions of Article 13 other than those relating to a Retained Collaboration Product. Neurogen shall provide Aventis with information regarding such Patent Rights so transferred in a manner consistent with Section 13.2(d) and if Neurogen declines to prepare, file, prosecute or maintain such Patent Rights, then Aventis may, with respect to any of such Patent Rights as Aventis may determine in its sole discretion, do so at Aventis' expense; and (iv) Upon Neurogen's request, Aventis shall grant to Neurogen a co-exclusive, world-wide license to utilize any Marks which were used primarily to market Collaboration Products and were not used to market any Retained Collaboration Products in return for a Royalty from Neurogen to Aventis of {__________} of Net Sales by Neurogen or any of its Affiliates, licensees or sublicensees of products that use any such Marks. (f) Remedies; Other Material Breaches. The rights of the Non-Breaching Party set forth in Sections (b) through (e) above shall be in addition to, and not in lieu of, any other remedies to which the Non-Breaching Party may be entitled at law or equity. If there is a material breach alleged other than in the scenarios covered by Sections (b) through (e) above, the Non-Breaching Party shall be entitled to seek any remedies available at law or equity. 12.5 Change of Control. Upon a Change of Control of Neurogen, this Agreement shall continue in full force and effect, except that, upon the election of Aventis: {___________}. 12.6 Bankruptcy. Each party may, in addition to any other remedies available to it by law or in equity, exercise the rights set forth below by written notice to the other Party (the "Insolvent Party"), in the event the Insolvent Party shall have become insolvent or bankrupt, or shall have made an assignment for the benefit of its creditors, or there shall have been appointed a trustee or receiver of the Insolvent Party or for all or a substantial part of its property, or any case or proceeding shall have been commenced or other action taken by or against the Insolvent Party in bankruptcy or seeking reorganization, liquidation, dissolution, winding-up arrangement, composition or readjustment of its debts or any other relief under any bankruptcy, insolvency, reorganization or other similar act or law of any jurisdiction now or hereafter in effect, or there shall have been issued a warrant of attachment, execution, distraint or similar process against any substantial part of the property of the Insolvent Party, and any such event shall have continued for sixty (60) days undismissed, unbonded and undischarged. All rights and licenses granted under or pursuant to this Agreement by each Party are, and shall otherwise be deemed to be, for purposes of Section 365 (n) of the U.S. Bankruptcy Code, licenses of rights to "intellectual property" as defined under Section 101 of the U.S. Bankruptcy Code. The Parties agree that the other Party as licensee of such rights under this Agreement shall retain and may fully exercise all of its rights and elections under the U.S. Bankruptcy Code. The Parties further agree that, in the event of the commencement of a bankruptcy proceeding by or against a Party under the U.S. Bankruptcy Code, the other Party shall be entitled to a complete duplicate of (or complete access to, as appropriate) any such intellectual property and all embodiments of such intellectual property, and same, if not already in the its possession, shall be promptly delivered to it (i) upon any such commencement of a bankruptcy proceeding upon its written request therefor, unless the bankrupt Party elects to continue to perform all of its obligations under this Agreement or (ii) if not delivered under (i) above, upon the rejection of this Agreement by or on behalf of the bankrupt Party upon written request therefor by the other Party. 12.7 Certain Termination at the end of the Research Program. If, at any time, after one year following the term of the Research Program, (x) there are: (i) no designated EDC Compounds that are being developed, (ii) no Aventis Compounds, Neurogen Compounds, or Joint Compounds in clinical development, and (iii) no Collaboration Products being marketed, and (y) such facts are not due to the failure of either Party to use Commercially Reasonable Efforts, then either Party may, upon ninety (90) days written notice to the other Party, terminate this Agreement in its entirety. {___________} 12.8 Liabilities. Termination of this Agreement shall not release either Party from any obligation or liability which shall have accrued at the time of termination, or preclude either Party from pursuing all rights at law and in equity with respect to any breach under this Agreement. Notwithstanding the foregoing, except as may be the case under Section 11, neither Party will be liable for punitive, exemplary or consequential damages incurred by the other Party arising out of any breach or default under this Agreement. ARTICLE 13 INTELLECTUAL PROPERTY 13.1 Ownership of Technology and Patent Rights. Each of Neurogen and Aventis shall respectively own the Technology, and any Patent Rights claiming such Technology, invented, developed or discovered solely by its employees or agents in the performance of such Party's obligations under this Agreement (respectively, "Neurogen Inventions" and "Aventis Inventions"). Inventorship shall be determined in accordance with United States laws of inventorship. When invented by inventors from both Parties ("Joint Inventions") each Party's employee or agent inventors shall assign their rights claiming Joint Inventions to that Party. In accordance with United States patent laws and this Agreement, the Parties will thus jointly own any Joint Inventions, each holding an undivided half interest in any Joint Inventions, for which there are no Third Party inventors who are not under an obligation of assignment of all right title and interest in such Joint Invention to one or both Parties. {___________}. It is the Parties' intention to avoid any involvement of such Third Party inventors in the Research Program. The Parties shall jointly own, each receiving an undivided half interest, any Joint Inventions for which there are no Patent Rights. No rights or licenses are granted unless expressly provided for in this Agreement and each Party shall retain all rights and licenses not expressly granted to the other. 13.2 Patent Prosecution and Maintenance. (a) Aventis Inventions and Collaboration Products. Aventis, at its expense, shall use Commercially Reasonable Efforts to prepare, file, prosecute, and maintain worldwide (i) Patents relating to Aventis Inventions and (ii) Patents claiming EDC Program Compounds or Collaboration Products. If Aventis declines to prepare, file, prosecute or maintain such patents, then Neurogen may, with respect to any of such patents as Neurogen may determine in its sole discretion, do so at Neurogen's expense. In the event any such Patents also relate to a Competing Product or an EDC Compound, certain rights to which were granted to Neurogen pursuant to Section 5.3(b)(iii)(B), Neurogen and Aventis shall share equally the expense of preparing, filing, prosecuting and maintaining such Patents. (b) Neurogen Inventions. Neurogen, at Aventis' expense, will prepare, file, prosecute and maintain worldwide patents relating to Neurogen Inventions. If Neurogen declines to prepare, file, prosecute or maintain such patents, then Aventis may, with respect to any of such patents as Aventis may determine in its sole discretion, do so at Aventis' expense. If Neurogen is preparing, filing, prosecuting or maintaining a patent relating to a Neurogen Invention that includes pending or issued claims reading on a Compound that is also the subject of a Neurogen patent application describing the useful activity of the Compound as being at a pharmacological target that is not a CRF1 Receptor, Neurogen shall pay {___________} of the costs of prosecuting such patent application relating to a Neurogen Invention.. (c) Joint Inventions. Aventis shall have the first right to prepare, file, prosecute, and maintain worldwide patents relating to Joint Inventions {___________}. If Aventis declines to prepare, file, prosecute, or maintain such a patent, then Neurogen may do so at its expense and Aventis' license to the patent under Section 2.1 above will be cancelled unless and until Aventis reimburses Neurogen for its costs relating to the prosecution of all patents relating to Joint Inventions that Aventis declined to prepare, file, prosecute, or maintain. (d) Cooperation Regarding Patent Filings - CRF1 Patent Rights. The Parties shall cooperate in pursuing Patent Rights for all Neurogen Inventions, Aventis Inventions, and Joint Inventions, and shall upon request execute such papers as are reasonably required to secure such Patent Rights in accordance with this Section. Each Party shall provide to the other Party a draft copy of each U.S. and WIPO patent application to be filed in accordance with this Section 13.2 prior to filing in order, and sufficiently in advance of filing, to obtain substantive comment of the other Party's patent counsel. In situations where there is an acute need for expeditious filing of a provisional U.S. application, such application may be filed without such prior provision to the other Party, with the understanding that additional provisional applications may be filed to incorporate any such substantive comments. Each Party shall provide to the other Party as-filed copies of all U.S. and WIPO patent applications promptly after the filing of such applications. Each Party shall provide to the other Party a copy of each U.S. Patent and Trademark Office "Office Action" regarding any application for which at least one of the other Party's employees or agents are listed as inventor, and a proposed response thereto, sufficiently in advance of the response due date (without extension), to obtain substantive comment of the other Party's patent counsel. (e) {___________} (f) Patent Extensions. Aventis shall have the right to file on behalf of Neurogen all applications and take actions necessary to obtain patent extensions pursuant to 35 USC 156 or like foreign statutes for Patent Rights licensed to Aventis hereunder. Neurogen agrees to sign such further documents and take such further actions (all at Aventis' expense) as may be requested by Aventis in this regard. (g) Disclaimer of Claims and Abandonment of Applications Neither Party may disclaim a claim of a patent application licensed to the other Party hereunder, nor shall either abandon such patent application, without the express written consent of the other Party. (h) Oppositions, Re-examinations and Maintenance The Party prosecuting any patent application in accordance with this Article 13 shall respond to any oppositions, inter partes re-examinations, or the like (and the parties shall cooperate in such responses in like manner to the prosecution cooperation provisions of Section 13.2(d) above) and shall maintain in force any patents issuing on such applications by duly filing all necessary papers and paying any fees required by the patent laws of the country in which such patent was granted. All costs shall be borne by the Party at whose expense the corresponding patent application was or is being prosecuted. 13.3 Enforcement of Patent Rights. (a) Aventis Inventions. Subject to subsection (c) below, Aventis shall have the sole right but not the obligation, in its own name and at its own expense, to enforce Patent Rights relating to Aventis Inventions against any Third Party suspected of infringing a claim of such a Patent Right. (b) Neurogen Inventions. Subject to subsection (c) below, Neurogen shall have the sole right but not the obligation, in its own name and at its own expense, to enforce Patent Rights relating to Neurogen Inventions against any Third Party suspected of infringing a claim of such a Patent Right. (c) Collaboration Products and EDC Program Compounds. Aventis shall have the first right, but not the obligation, in its own name, to enforce Patent Rights relating to any Collaboration Product or EDC Program Compound, against any Third Party suspected of infringing a claim of such a Patent Right. In the event Aventis shall not elect to enforce any Patent Right relating to a Collaboration Product or EDC Program Compound, Neurogen shall have the right to do so. The Party electing to enforce such Patent Rights (the "Enforcing Party") shall have exclusive control over the conduct of any such proceedings, including the right to settle or compromise such proceedings consistent with Aventis' licenses hereunder, provided, however, that the Enforcing Party may not settle or compromise any such action in a manner which diminishes the Patent Rights relating to any Neurogen Inventions without Neurogen's consent or Aventis Inventions without Aventis' consent or Joint Inventions without the consent of both Parties or which would impose any financial obligation on the other Party without such other Party's consent. The expenses of any proceeding the Enforcing Party initiates, including lawyers' fees and costs, shall be borne by the Enforcing Party, provided, however, that the other Party (the "Non-Enforcing Party") may elect to pay {___}% of all such expenses. The Non-Enforcing Party will cooperate fully with the Enforcing Party in such action upon request by the Enforcing Party, out-of-pocket expenses incurred in carrying out such cooperation to be paid by the enforcing party. In the event the Non-Enforcing Party has elected to pay {___}% of the expenses as set forth above, such award or recovery paid to the Enforcing Party shall first be applied toward reimbursement of legal fees, costs and expenses incurred by the Parties (in proportion to expenses incurred), and the remainder, if any, shall be divided {___}% to the Non-Enforcing Party and {___}% to the Enforcing Party. If Aventis lacks standing to bring any proceeding for which it would otherwise be the Enforcing Party, and Neurogen has standing to carry out such proceeding, then Neurogen shall do so at Aventis' request and expense, subject to the above {___}% election provisions. 13.4 Infringement Defense. Aventis shall have the right, but not the obligation, to defend and control any suit against any of Aventis, Aventis' Affiliates or sublicensees, alleging infringement of any patent or other intellectual property right of a Third Party arising out of activities under this Agreement including, without limitation, the manufacture, use, sale, offer to sell or importation of a Collaboration Product by Aventis, Aventis' Affiliates or sublicensees; provided, however, that Aventis shall obtain Neurogen's written consent prior to agreeing to any settlement which would require any payment by Neurogen or would adversely affect Neurogen's business in a material way; and provided, further, that Aventis shall give Neurogen prompt written notice of the commencement of any such suit or threat of such suit and will furnish Neurogen a copy of each communication relating to the alleged infringement. Aventis shall be responsible for the costs and expenses, including lawyer's fees and costs, associated with any suit or action, and Aventis and Neurogen will consult with one another and cooperate in the defense of any such action. If Aventis finds it necessary or desirable to join Neurogen as a party to any such action, Neurogen will execute all papers and perform such acts as shall be reasonably required, at Aventis expense. 13.5 Cooperation Between the Parties. The Parties recognize that the designation of a Compound as an EDC Program Compound or Collaboration Product may impact the designation of the Party responsible for such invention under this Article 13. The Parties anticipate that patent applications may be filed on Compounds prior to designation of the Compound as EDC Program Compound or Collaboration Product, and agree to cooperate in deciding how to allocate responsibilities and expenses in the event designation of a Compound as an EDC Program Compound or Collaboration Product impacts responsibilities under this Article 13. In addition, the Parties agree to cooperate with each other in the preparation, filing, prosecuting, maintenance, defense and enforcement of Patent Rights included in Neurogen Contributed Technology or Joint Technology licensed hereunder. In any action taken in the prosecution of, or in the defense of an action by a Third Party related to patent invalidity or non-patentability of any patent application or patent claiming Neurogen Contributed Technology or Joint Technology licensed hereunder, neither Party shall admit the invalidity or non-patentability of any Patent Right or take any other action that may diminish Patent Rights within Neurogen Contributed Technology or Joint Technology licensed hereunder without the other Party's prior written consent. The Parties agree to cooperate with each other and to use best efforts to ensure the cooperation of any of their respective personnel and licensee(s) or licensor(s) as might reasonably be requested in any such matters, and shall sign any necessary legal papers and provide the prosecuting party with data or other information in support thereof. The Parties will confer on what action to take with respect to the defense of infringement proceedings naming both Aventis and Neurogen or in proceedings to enforce patents claiming Neurogen Contributed Technology or Joint Technology licensed hereunder against a Third Party. 13.6 Marks for Collaboration Products. Except as otherwise expressly provided in this Agreement, Aventis shall own all trademarks and service marks associated with Aventis' commercialization of a Collaboration Product (collectively, "Marks"). Aventis shall also own any domain names distinctly including any Marks. Except as otherwise provided for herein, Neurogen shall not have any right, title, interest or other license in or to any of the Marks, and all uses of such Marks shall inure solely to the benefit of Aventis. Under no circumstances shall Aventis acquire any rights under this Section 13.6 in any trademark, service mark, or domain name including the word "Neurogen" or "AIDD." 13.7 {___________} ARTICLE 14 MISCELLANEOUS 14.1 Disputes. If, within thirty (30) days after a matter is first considered, the Parties are unable to resolve a dispute or if the Research Committee is unable to reach a decision on any matter within the scope of its responsibilities, Aventis or Neurogen, by written notice to the other, may have such dispute referred to its respective executive officer designated by each Party for attempted resolution by good faith negotiations. Any such dispute shall be submitted to such executive officers no later than thirty (30) days following such request by either Aventis or Neurogen. {___________}. Notwithstanding anything in this Agreement to the contrary, the preceding sentence shall not be deemed to affect in any way the obligations of either Party under this Agreement. 14.2 Assignment. This Agreement shall not be assignable by either Party, other than to an Affiliate of such Party, without the prior written consent of the other Party, such consent not to be unreasonably withheld. This Agreement shall be binding upon the permitted successors and assigns of the Parties. 14.3 Further Actions. Each Party agrees to execute, acknowledge and deliver such further instruments, and to do all such other acts, as may be necessary or appropriate in order to carry out the purposes and intent of this Agreement. 14.4 Force Majeure. No Party shall be liable to the other Party for loss or damages or shall have any right to terminate this Agreement or to seek a {___________} for any default or delay attributable to any Force Majeure, if the Party affected shall give prompt notice of any such cause to the other Party. The Party giving such notice shall thereupon be excused from such of its obligations hereunder as it is thereby disabled from performing for so long as it is so disabled, provided, however, that such affected Party commences and continues to use its Commercially Reasonable Efforts to cure such disablement. 14.5 Notices. Notices to Neurogen shall be addressed to: Neurogen Corporation 35 Northeast Industrial Road Branford, Connecticut 06405 Attention: Director of Business Development Facsimile No.: (203) 483-8651 with a copy to: Neurogen Corporation 35 Northeast Industrial Road Branford, Connecticut 06405 Attention: Legal Department Facsimile No.: (203) 483-8651 and to: Milbank, Tweed, Hadley & McCloy LLP 1 Chase Manhattan Plaza New York, NY 10005 Attention: Donald B. Brant, Jr. Facsimile No.: (212) 530-5618 Notices to Aventis shall be addressed to: Aventis Pharmaceuticals Inc. Route 202-206 P.O. Box 6800 Bridgewater, New Jersey 08807-0800 Attention: Vice President, Global Business Development Facsimile No.: (908) 231-3502 with a copy to: Aventis Pharmaceuticals Inc. Route 202-206 P.O. Box 6800 Bridgewater, New Jersey 08807-0800 Attention: Vice President, Legal Corporate Department Facsimile No.: (908) 231-4480 and to: Morgan, Lewis & Bockius LLP 502 Carnegie Center Princeton, NJ 08540 Attention: Randall B. Sunberg Facsimile No.: (609) 919-6639 Either Party may change the address to which notices shall be sent by giving notice to the other Party in the manner herein provided. Any notice required or provided for by the terms of this Agreement shall be in writing and shall be (a) sent by registered or certified mail, return receipt requested, postage prepaid, (b) sent via a reputable overnight courier service, or (c) sent by facsimile transmission, in each case properly addressed in accordance with the paragraph above. The effective date of notice shall be the actual date of receipt by the Party receiving the same. 14.6 Amendment. No amendment, modification or supplement of any provision of this Agreement shall be valid or effective unless made in writing and signed by a duly authorized officer of each Party. 14.7 Waiver. No provision of this Agreement shall be waived by any act, omission or knowledge of a Party or its agents or employees except by an instrument in writing expressly waiving such provision and signed by a duly authorized officer of the waiving Party. 14.8 Counterparts. This Agreement may be executed in counterparts and such counterparts taken together shall constitute one and the same agreement. 14.9 Descriptive Headings. The descriptive headings of this Agreement are for convenience only, and shall be of no force or effect in construing or interpreting any of the provisions of this Agreement. 14.10 Governing Law. This Agreement shall be construed and the respective rights of the Parties determined according to the substantive laws of the State of Delaware notwithstanding the provisions governing conflict of laws under Delaware law to the contrary. 14.11 Severability. If any provision hereof should be held invalid, illegal or unenforceable in any respect in any jurisdiction, the Parties hereto shall substitute, by mutual consent, valid provisions for such invalid, illegal or unenforceable provisions which valid provisions in their economic effect are sufficiently similar to the invalid, illegal or unenforceable provisions that it can be reasonably assumed that the Parties would have entered into this Agreement with such valid provisions. In case such valid provisions cannot be agreed upon, the invalid, illegal or unenforceable of one or several provisions of this Agreement shall not affect the validity of this Agreement as a whole, unless the invalid, illegal or unenforceable provisions are of such essential importance to this Agreement that it is to be reasonably assumed that the Parties would not have entered into this Agreement without the invalid, illegal or unenforceable provisions. 14.12 Entire Agreement of the Parties. This Agreement, together with the Schedules and Exhibits hereto, constitutes and contains the complete, final and exclusive understanding and agreement of the Parties and cancels and supersedes any and all prior negotiations, correspondence, understandings and agreements whether oral or written, among the Parties respecting the subject matter hereof and thereof. 14.13 Independent Contractors. The relationship between Aventis and Neurogen created by this Agreement is one of independent contractors and neither Party shall have the power or authority to bind or obligate the other except as expressly set forth in this Agreement. 14.14 No Trademark Rights. Except as otherwise provided herein, no right, express or implied, is granted by this Agreement to use in any manner the name "Neurogen," "Aventis," or any other trade name or trademark of the other Party or its Affiliates in connection with the performance of this Agreement. 14.15 Accrued Rights; Surviving Obligations. Unless explicitly provided otherwise in this Agreement, termination, relinquishment or expiration of the Agreement for any reason shall be without prejudice to any rights, which shall have accrued to the benefit to any Party prior to such termination, relinquishment or expiration, including damages arising from any breach hereunder. Such termination, relinquishment or expiration shall not relieve any Party from obligations which are expressly indicated to survive termination or expiration of the Agreement, including, without limitation, those obligations set forth in Articles 10, 11 and 12 hereof. 14.16 Compliance with Export Regulations. Neither Party shall export any technology licensed to it by the other Party under this Agreement except in compliance with U.S. export laws and regulations. 14.17 No Third Party Beneficiaries. No person or entity other than Aventis, Neurogen and their respective Affiliates and permitted assignees hereunder shall be deemed an intended beneficiary hereunder or have any right to enforce any obligation of this Agreement. 14.18 No Strict Construction. This Agreement has been prepared jointly and shall not be strictly construed against either Party. IN WITNESS WHEREOF, duly authorized representatives of the Parties have duly executed this Agreement as of the date first written above to be effective as of the Effective Date. AVENTIS PHARMACEUTICALS INC. By: /s/ Errol de Souza ------------------------------------- Name: Errol de Souza Title: Sr. VP US DI&A NEUROGEN CORPORATION By: /s/ William H. Koster ------------------------------------ Name: William H. Koster, Ph.D. Title: President and CEO