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): August 24, 2012

VRINGO, INC.

(Exact Name of Registrant as Specified in its Charter)

780 Third Avenue, 15^th Floor, New York, NY 10017

(Address of Principal Executive Offices and Zip Code)

Registrant’s telephone number, including area code: (212) 309-7549

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:

¨ Written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425)

¨ Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12)

¨ Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b))

¨ Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c))

On August 25, 2012, the board of directors (the “Board”) of Vringo, Inc. (the “Company”) approved, at the recommendation of the Compensation Committee of the Board, an increase in the base salary of Ellen Cohl, the Company’s Chief Financial Officer, under her current employment agreement with the Company, dated October 20, 2012, to a gross monthly base salary of NIS 50,000 per month, or an aggregate of NIS 600,000 per year (approximately $149,500 per year as of August 28, 2012), effective August 10, 2012. In addition, the Board approved the acceleration of certain of Ms. Cohl’s unvested stock option grants with exercise prices between $0.01 and $5.50 which will become fully vested immediately.

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.