Mark S. Davies

Mark S. Davies is a prominent patent litigator specializing in appellate matters for leading global technology companies, particularly those involved in hardware and software innovation. His practice spans almost every area of patent law, as well as copyright, trade secret, and trademark disputes, with a focus on novel issues related to artificial intelligence, standard-setting, and patent damages.

Davies primarily represents defendants, frequently working to defeat non-practicing entities such as Intellectual Ventures, IP Bridge, and Uniloc Corporation. His tracked appearances, including representing Apple Inc. as a defendant in SoftView LLC v. Apple Inc. et al., underscore this defense-oriented approach.

Currently, Davies is a partner in the Washington, D.C. office of White & Case, which he joined in June 2024 to bolster the firm's Intellectual Property Practice and Global Technology Industry Group. Prior to White & Case, he co-founded a leading appellate practice and was a partner at Orrick, Herrington & Sutcliffe LLP, where he notably represented Apple as an appellant in Apple Inc. v. Wi-LAN Inc. before the Federal Circuit. Earlier in his career, from 1999 to 2006, Davies served as a member of the Appellate Staff of the Civil Division at the U.S. Department of Justice, representing various federal agencies, including the U.S. Patent and Trademark Office, before the Federal Circuit and the U.S. Supreme Court.

He is highly experienced in appellate litigation, having argued and briefed more than 50 cases in both private practice and government. Davies is also active in PTAB (Patent Trial and Appeal Board) matters, handling appeals from PTAB decisions. For instance, in SoftView LLC v. Apple Inc. et al., he represented Apple in Federal Circuit appeals stemming from PTAB inter partes review (IPR) proceedings concerning patent invalidation. He is recognized for his "unparalleled Federal Circuit experience."