Mark D. Selwyn

Mark D. Selwyn

recognized lawyers icon Recognized in Best Lawyers since 2017
Awarded Practice Areas
Litigation - Intellectual Property
Awarded Practice Areas
Litigation - Intellectual Property
Works at
Wilmer Cutler Pickering Hale and Dorr LLP

105 Best Lawyers awards

Wilmer Cutler Pickering Hale and Dorr LLP logo

Biography

Mark Selwyn is a partner in the Litigation/Controversy Department. He joined the firm in 1994.

Mr. Selwyn’s practice focuses on intellectual property litigation. Major corporations have relied on him to litigate biomedical, electrical, chemical, mechanical, and business method patents involving a diverse array of technologies, including wireless communications, electronic commerce, digital cameras, solid state disk drives, location sensing, biosensors, water and wastewater filtration, integrated circuits and angioplasty catheters. He has represented clients in dozens of patent and other intellectual property cases in federal courts throughout the country and before the International Trade Commission (ITC). Mr. Selwyn counts among his clients many of Silicon Valley’s most prominent technology companies.

Works at
Wilmer Cutler Pickering Hale and Dorr LLP

105 Best Lawyers awards

Wilmer Cutler Pickering Hale and Dorr LLP logo

Locations

Education

  • Columbia University, JD, graduated 1993
  • Harvard University, AB, graduated 1990

Bar Admissions

  • California, The State Bar of California
  • Massachusetts, Massachusetts Bar Association
  • New York, New York State Bar Association

Client Testimonials

Mark Selwyn is one of the foremost lawyers in WilmerHale's patent litigation practice. Mark Selwyn's attention to client needs is unsurpassed. The team of Mark and his co-counsel, combined with the outstanding support resources available at the firm, always places the client in the best possible position to prevail.

Gary Ganzi (Siemens Corporation)

Mark Selwyn is talented, tenacious, and hardworking.

Awards & Focus

Recognized in The Best Lawyers in America® 2026 for work in:
  • Litigation - Intellectual Property
Additional Areas of Practice:
  • Commercial Litigation
  • Litigation - Patent
  • Securities / Capital Markets Law

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