Mark D. Selwyn

Mark D. Selwyn is a veteran intellectual property litigator and a partner at Wilmer Cutler Pickering Hale and Dorr (WilmerHale), where he is co-chair of the firm's IP Litigation Practice Group. He has been with the firm for his entire career, having joined in 1994. His practice is focused on complex, high-stakes patent litigation for major corporations, particularly in the technology sector. Selwyn's experience spans a wide array of technologies, including wireless communications, electronic commerce, software, solid-state disk drives, and biomedical devices. He has litigated dozens of patent cases in federal courts throughout the United States and before the International Trade Commission (ITC).

While the provided case list shows Selwyn representing the plaintiff, Visa USA Inc., in a patent dispute against Cortex MCP Inc., his broader public record reveals a significant practice defending major technology companies. He has played a leading role in defending Apple in its global patent disputes, including against Samsung and in a long-running 4G LTE patent case brought by Optis, where he helped secure a complete defense verdict in the Eastern District of Texas. He also served as one of Apple's lead attorneys in a trade secret and patent retrial brought by Masimo Corp. This indicates a practice that, while including plaintiff-side work, is heavily weighted toward defending large operating companies in complex disputes.

The tracked case list notes Selwyn's role as "Lead Counsel (Trial & PTAB)" in the Visa v. Cortex matter, which involves ongoing inter partes review (IPR) proceedings at the Patent Trial and Appeal Board. His broader practice includes significant PTAB experience, and his firm biography highlights representation of clients in numerous IPR proceedings.

Mr. Selwyn earned his A.B. from Harvard University in 1990 and his J.D. from Columbia University School of Law in 1993. He is a member of the California bar.