Christopher James Gass

Christopher James Gass is a Shareholder at Leydig, Voit & Mayer, specializing in intellectual property law with a particular focus on patent litigation, licensing, and Inter Partes Review (IPR) proceedings. His technical expertise spans electrical, computer, software, and mechanical technologies, including mobile devices, telecommunication networks (3G, 4G, 5G), cybersecurity systems, digital imaging, and integrated circuits. Prior to his legal career, he worked as an electrical engineer in Motorola's mobile devices division, contributing to fields such as electrically small antennas, RF circuitry, and cellular communication software. Mr. Gass earned his J.D. from Chicago-Kent College of Law in 2010 and a B.S. in Electrical Engineering from the University of Illinois in 2002. He is admitted to practice in Illinois and registered before the U.S. Patent and Trademark Office.

In his patent litigation practice, Mr. Gass primarily represents defendants. His firm profile indicates experience in defending clients in patent infringement suits and engaging in IP due diligence reviews for mergers and acquisitions. He also maintains an active practice in post-grant proceedings, including Inter Partes Review (IPR) before the Patent Trial and Appeal Board (PTAB).

A significant case in Mr. Gass's tracked appearances is Pantech Corporation et al. v. OnePlus Technology (Shenzhen) Co., Ltd., where he served as lead counsel for the defendant, OnePlus Technology. In this Eastern District of Texas case, a jury found that OnePlus willfully infringed five of Pantech's patents related to wireless communication and user interface technologies, and that the patents were valid. The jury awarded substantial damages to Pantech, and a judgment was entered in January 2025, with an appeal subsequently filed.