John C O'Quinn

John O’Quinn’s practice focuses on litigation, including intellectual property, commercial, regulatory and other complex cases at the trial and appellate levels. He has argued over 110 appeals in courts throughout the country. He is one of the premiere practitioners in the U.S. Court of Appeals for the Federal Circuit, where he has argued more than sixty patent appeals. A trained engineer who graduated first in his class from Harvard Law School and clerked at the U.S. Supreme Court, he has represented a broad array of clients in patent cases involving numerous technologies for a variety of clients, ranging from small start-ups to Fortune 500 companies. Other representative matters have included defamation, trademark, trade secret, regulatory, False Claims Act, and bankruptcy disputes. Clients have described him as an “appellate high flier” who “is outstanding as both an oral advocate and brief writer.” His work has been recognized in the National Law Journal, The Legal 500, and the Financial Times. In 2025, Managing Intellectual Property recognized him as its Appellate Practitioner of the Year.

Harvard Law School, J.D., 2001; MIT, M.S., 1998; Oxford University, M.Sc., 1997; NCSU, B.S., 1996.