John Flock is a high-stakes patent litigator whose experience has generated professional achievement awards and American Law Journal “Top Jury Verdict” recognition. He combines 20 years’ patent litigation experience with nine years as a former New York City Assistant District Attorney to represent his clients in high stakes battles in the ITC and district courts.

Mr. Flock also has developed particular skill in patent valuation by using his experience in litigation and in the negotiations of major portfolios to determine real world value, particularly focusing on the key patents that drive value. He has worked with global Fortune 500 companies on some of their major acquisitions of patent assets in the past few years.

Mr. Flock has built long-term relationships with sophisticated clients including Sony, Lenovo, Toyota, Fisher-Price, HBO, the Federal Reserve Bank of New York, and others. He has been lead outside counsel in global disputes, litigating in the U.S. and advising on patent strategy in Europe and Asia.

Mr. Flock holds an undergraduate degree in physics and has significant experience designing and implementing computer programs, supervising computer programming staff, and serving as court-appointed receiver for a software company.

Independent publications whose rankings are based on evaluations from in-house counsel have recognized him for excellence in practice, including the 2014 editions of IAM Patent 1000 –The World’s Leading Patent Practitioners and The Legal 500 United States, and Mr. Flock has been named a 2014 New York “IP Star” by Managing Intellectual Property. He is a speaker and author on intellectual property issues and a member of Kenyon’s Executive Committee, and co-chair of the firm’s Electrical/Mechanical/Computer Practice Group.

Bar and Court Admissions
  • New York
  • U.S. District Court for the Southern District of New York
  • U.S. Court of Appeals for the Federal Circuit
  • Registered Patent Attorney: U.S. Patent and Trademark Office
Professional Organizations
  • American Bar Association
  • Asian American Bar Association of New York, chair of the litigation Section and past president
  • Computer Law Association
  • New York Patent, Trademark and Copyright Law Association