James Glass

Practice Areas

James Glass is the Chair of Quinn Emanuel’s Post-Grant patent practice. He has been lead counsel on over 500 proceedings on behalf of both Petitioners and Patent Owners, and has been ranked as one of the top ten most active and one of the best performing attorneys at the PTAB each year since 2018. IAM has ranked Quinn’s Post Grant group as the most successful among the top-ten firms with the heaviest caseloads, having the highest win rate for petitioners. Jim has also been recognized by Lawdragon 500 for Leading Global IP Lawyers in Patent Litigation, Post-Grant for 2025.

Jim’s practice focuses on patent litigation including litigation in the district courts, the ITC and post-grant proceedings at the United States Patent and Trademark Office (“PTO”). Post-grant proceedings, which are mini-trials at the PTO—complete with depositions, experts, and live argument—provide unique opportunities for litigants to advance strategic interests rapidly and cost-effectively.

Jim has also been recognized for his experience arguing at the Court of Appeals for the Federal Circuit. He has been ranked repeatedly as one of the top performing and most active appellate attorneys at the Federal Circuit, and has been ranked as one of the top ten attorneys in each category. He has successfully defended wins at the Federal Circuit for Vivint, EMSON, Nant Holdings, Voxer and other clients.

In post-grant proceedings, Jim has secured significant wins for both patent owners and petitioners. For patent owners Jim was lead counsel defending NantWorks against a series of six IPR petitions filed by Bank of America. Two of those petitions were denied institution, and the remaining four were found patentable after a full trial. Jim successfully defended that win on appeal at the Federal Circuit. Jim defended Juul Labs, Inc. in a series of five IPRs filed by Njoy LLC. The PTAB denied institution of four of the five petitions, and after a full trial and oral argument, Jim obtained a final written decision finding all claims patentable. Jim was also lead counsel for Voxer on four IPRs filed by Facebook. All four were denied institution and the denial was affirmed by the Federal Circuit. That win was recognized in The American Lawyer “Litigator of the Week” report. Jim was also lead counsel on a series of 14 IPRs filed by 10x Genomics; the PTAB denied institution of all 14 petitions.

On the petitioner side, he argued at trial for clients such as Mercedes-Benz, Samsung, and GoPro. Jim was also lead counsel for PLR Worldwide in a series of five IPRs against Flip Phone games. While one was denied institution, Jim’s team sought director review, and in a rare decision, the Director reversed the PTAB and remanded for further consideration. The PTAB instituted the previously denied IPR on remand and found on final written decision all claims unpatentable.

Jim has extensive litigation experience. He has successfully argued many Markman and Summary Judgment motions and has represented clients at trial in both the district court and at the International Trade Commission. He represented Emson in a patent infringement case filed by Avenue innovations, where he argued at Markman that two of the claims were invalid as indefinite – the Court agreed. The Court subsequently ruled at summary judgment that none of the remaining claims were infringed. Jim successfully defended that win on appeal at the Federal Circuit. Jim has also litigated cases involving a variety of complex technologies, including smartphone technologies, WIFI systems, semiconductor fabrication and circuitry, inkjet printers, LCD technology, networking technology, graphical user interfaces, on-line trading systems, and fiber optic gyroscope systems.