UNITED STATES
SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549
 
FORM 8-K

CURRENT REPORT
Pursuant to Section 13 OR 15(d) of The Securities Exchange Act of 1934
 
Date of Report (Date of earliest event reported) October 28, 2015
 
Progenics Pharmaceuticals, Inc.
(Exact name of registrant as specified in its charter)
 
Delaware
 
000-23143
 
13-3379479
(State or other jurisdiction
of incorporation)
 
(Commission
File Number)
 
(IRS Employer
Identification No.)
         
 
777 Old Saw Mill River Road, Tarrytown, New York
 
10591
 
(Address of principal executive offices)
 
(Zip Code)
Registrant's telephone number, including area code (914) 789-2800
 
Check the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the filing obligation of the registrant under any of the following provisions (see General Instruction A.2. below):
 
 
o Written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425)
 
o Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12)
 
o Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b))
 
o Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c))
 

 
Item 8.01.
Other Events.
 

On October 28, 2015 Progenics Pharmaceuticals, Inc. ("Progenics") received notification of a Paragraph IV certification for certain patents for RELISTOR® (methylnaltrexone bromide) subcutaneous injection, which are listed in the FDA's Approved Drug Products with Therapeutic Equivalence Evaluations, or the Orange Book. The certification resulted from the filing by Actavis LLC of an Abbreviated New Drug Application (ANDA) challenging such patents for RELISTOR subcutaneous injection.

Progenics and its licensee for RELISTOR, Salix Pharmaceuticals, Inc. (a wholly-owned subsidiary of Valeant Pharmaceuticals International, Inc.) are assessing the notification and intend to vigorously enforce RELISTOR intellectual property rights.

SIGNATURES
 
 
Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned hereunto duly authorized.
 
 
 
PROGENICS PHARMACEUTICALS, INC.
 
By:
/s/ ANGELO W. LOVALLO, JR.
   
Angelo W. Lovallo, Jr.
   
Vice President - Finance & Treasurer
   
(Principal Financial and Accounting Officer)

 
 
Date: November 3, 2015