Wilmer Cutler Pickering Hale and Dorr

Wilmer Cutler Pickering Hale and Dorr LLP: Patent Litigation Summary

Wilmer Cutler Pickering Hale and Dorr LLP, known as WilmerHale, is a major international law firm co-headquartered in Boston and Washington, D.C.. As a prominent "BigLaw" firm with more than 1,000 lawyers across 12 offices in the United States and Europe, it is consistently ranked among the nation's most elite firms, placing in the top 3 of The American Lawyer's "A-List" in 2024 and 2025.. The firm is recognized by Chambers and Partners and Best Lawyers as having a top-tier patent litigation practice..

The firm's intellectual property group, comprising over 200 lawyers and technical specialists, handles complex, high-stakes patent disputes for industry-leading clients.. WilmerHale's litigators are known for their expertise across a wide array of technologies, including telecommunications, wireless communications, consumer electronics, semiconductors, computer security, and life sciences.. The firm’s practice is not limited to one side of the aisle; while the provided case list shows plaintiff-side representation for Visa Inc., WilmerHale frequently defends major technology companies against infringement claims, including those from non-practicing entities..

WilmerHale’s IP litigators handle matters from district court through to the highest levels of appeal. The tracked cases Visa USA Inc. v. Cortex MCP Inc. reflect the firm's active Federal Circuit appellate practice.. Beyond this, the firm has served as counsel in numerous high-profile patent disputes, including representing Apple in its global litigation against Optis Wireless and in a major patent trial brought by Masimo concerning pulse oximetry technology.. The firm also has a formidable Patent Trial and Appeal Board (PTAB) practice, consistently ranked by publications like Managing IP and Law360 as a top firm for inter partes review (IPR) proceedings for both patent challengers and owners..

The practice is led by highly regarded partners. Mark D. Selwyn, based in Palo Alto, is the co-chair of the firm's IP Litigation Practice and has represented many of Silicon Valley's most prominent technology companies.. The firm's deep appellate bench includes Washington, D.C. partner Thomas G. Saunders, who focuses on IP appeals and has argued before the U.S. Supreme Court.. Other key partners named in the provided case data include Nina S. Tallon, a trial lawyer with a notable record in cases before the International Trade Commission (ITC), and Todd C. Zubler, an experienced IP and appellate litigator..