Mark A. Perry

Mark A. Perry is a distinguished appellate attorney with a significant focus on patent litigation, particularly at the Supreme Court and Federal Circuit levels. He is recognized for his work on complex commercial disputes, with notable expertise in intellectual property matters involving software, telecommunications, high-tech, and consumer electronics. His practice often involves guiding major global companies through high-stakes appellate litigation.

Perry primarily defends operating companies, having represented clients such as Google, Samsung, and Apple in tracked district court cases. His appellate practice frequently sees him serving as lead counsel for Fortune 100 companies facing patent infringement claims. A highlight of his career includes a landmark victory in Alice Corp. v. CLS Bank before the U.S. Supreme Court, a decision that significantly redefined the standard for patent eligibility of computer-implemented inventions. He also secured Supreme Court wins in Lucia v. SEC and Janus Capital Group v. First Derivative Traders. More recently, his firm, Weil, Gotshal & Manges, successfully won an appeal for Edwards Lifesciences in a patent infringement dispute concerning prosthetic heart valve technology in October 2025. He has experience in IPRs, having represented Comcast in appeals related to various IPRs at the Federal Circuit.

Currently, Mr. Perry serves as Co-Head of the Appeals and Strategic Counseling practice at Weil, Gotshal & Manges LLP. Prior to joining Weil, he was a partner at Gibson, Dunn & Crutcher LLP, where he co-chaired the firm's nationwide Appellate and Constitutional Law Practice Group. He is admitted to practice in California and the District of Columbia, as well as before the U.S. Supreme Court and the U.S. Court of Appeals for the Federal Circuit. He earned his J.D. with high honors from the University of Chicago Law School and received his undergraduate degree from the University of California at Berkeley.