James J. Foster

James J. Foster is a highly experienced patent litigator currently practicing as a partner at Prince, Lobel, Glovsky & Tye. He joined the firm in 2016, bringing over 35 years of patent trial experience, and previously chaired the Patent Litigation Group at Wolf, Greenfield & Sacks, P.C..

Mr. Foster specializes in patent litigation involving computer-related and wireless technology. His practice includes both enforcing patent portfolios on behalf of patent owners and licensing entities, and defending against infringement claims. The single tracked case, Uniloc USA, Inc. v. Symantec Corp. et al., highlights his plaintiff-side work, where he served as lead counsel for Uniloc USA, Inc.. In a notable outcome related to this client, Mr. Foster secured a win at the Federal Circuit Court, overturning a district court decision that had invalidated four Uniloc server management software patents. Beyond patent cases, he also notably achieved the largest jury verdict in a trade secret case in Massachusetts history, which was successfully upheld on appeal to the First Circuit.

While specific individual PTAB/IPR experience is not detailed in his public profile, Prince Lobel's Intellectual Property practice group, of which Mr. Foster is a part, actively represents clients in post-grant proceedings at the U.S. Patent and Trademark Office, including inter partes review and post-grant review. Mr. Foster is widely admitted, holding full membership in the bars of 14 United States district courts and having argued cases pro hac vice in twenty additional districts. He has also made numerous arguments in Federal Circuit patent appeals.