David J. Cho

David J. Cho (Ph.D.) is a patent litigator at Desmarais LLP, specializing in complex technology-driven disputes, particularly for defendants in the high-tech sector. His practice focuses on a wide range of technologies, including artificial intelligence, machine learning, natural language processing, semiconductor devices, computer software, wireless communications, and consumer electronics. Dr. Cho's experience primarily involves defending operating companies, as evidenced by his appearances as counsel and lead counsel for Apple Inc..

At Desmarais LLP, Dr. Cho plays a significant role in patent litigation, including the ongoing case of VB Assets, LLC v. Apple Inc., which involves natural language processing patents asserted against Apple's Siri-enabled devices. The firm's broader practice includes successful trial results in various patent infringement cases across diverse technologies such as telecommunications, networking, and medical devices.

Dr. Cho possesses substantial experience before the Patent Trial and Appeal Board (PTAB), where his practice frequently involves inter partes review (IPR), post-grant review (PGR), and reexamination proceedings. He has served as lead counsel in IPRs, successfully invalidating patents asserted in concurrent district court litigations.

Academically, Dr. Cho holds a Ph.D. in Physics from the University of California, Berkeley, and earned his J.D., cum laude, from the University of Michigan Law School. He is admitted to practice in California and the District of Columbia, as well as before the U.S. Court of Appeals for the Fourth Circuit and the U.S. Court of Appeals for the Federal Circuit. Prior to joining Desmarais LLP, he was an associate at Covington & Burling LLP and clerked for Judge Timothy B. Dyk at the U.S. Court of Appeals for the Federal Circuit.