Atty. Mark D. Selwyn

Atty. Mark D. Selwyn

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

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Profile Summary

About Mark D. Selwyn at a glance

Mark D. Selwyn is a ip attorney based in Palo Alto, California, practicing at Wilmer Cutler Pickering Hale and Dorr LLP. Admitted to practice in California, The State Bar of California, Massachusetts, Massachusetts Bar Association, and New York, New York State Bar Association. Educated at Columbia University (JD, 1993) and Harvard University (—, 1990). Recognitions include Best Lawyers in America — Litigation - Intellectual Property (2026), Best Lawyers in America — Additional Areas of Practice: (2026), and Best Lawyers in America — Commercial Litigation (2026). Serands clients in Palo Alto, CA and the surrounding metropolitan area.

Verified attorney profile · Updated June 2026

About

  • 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

Practice Areas Explained

Mark D. Selwyn's Areas of Practice

Each practice area below reflects the types of cases Mark D. Selwyn handles, with a brief overview of what that area of law covers.

Intellectual Property

IP attorneys protect inventions, brands, and creative work through patent prosecution, trademark registration, copyright, and trade-secret enforcement.

Mark D. Selwyn is one of 106,079 ip attorneys indexed nationally. Browse ip attorneys in California →

Jurisdictional Context

Why local counsel matters in California

Practicing law in California. Legal matters in California are governed by state-specific rules of civil and criminal procedure, statutes of limitations, and substantive law. Cases originating in Palo Alto are typically filed in the local municipal court or the appropriate California state district court, depending on subject matter and amount in controversy. An attorney licensed in California brings working knowledge of local procedural deadlines, judicial practices in this andnue, and the substantive law that applies to cases brought here. Out-of-state attorneys generally cannot represent clients in California courts without local counsel or pro hac vice admission.

Looking for additional California attorneys? Browse all attorneys in Palo Alto or all attorneys in California.

Frequently Asked

Common questions about Mark D. Selwyn

Where is Mark D. Selwyn's law office located?
Mark D. Selwyn's law practice is located in Palo Alto, California. The firm is Wilmer Cutler Pickering Hale and Dorr LLP. You can contact the office directly through this profile page.
What practice areas does Mark D. Selwyn handle?
Mark D. Selwyn focuses on ip. Each practice area listed reflects experience handling cases of that type in California.
Where did Mark D. Selwyn go to law school?
Mark D. Selwyn earned their education at (JD, 1993); (—, 1990).
How can I contact Mark D. Selwyn for a consultation?
You can contact Mark D. Selwyn directly through this profile page. Click "Ask the Attorney" to submit a question, or "Schedule a Consultation" to book a meeting. Most claimed-profile attorneys respond within one business day.
What awards or recognition has Mark D. Selwyn received?
Mark D. Selwyn's notable recognition includes: Best Lawyers in America — Litigation - Intellectual Property; Best Lawyers in America — Additional Areas of Practice:; Best Lawyers in America — Commercial Litigation; Best Lawyers in America — Litigation - Patent; Best Lawyers in America — Securities / Capital Markets Law.

Education

JD
Columbia University
- 1993
Harvard University
- 1990

Awards

Best Lawyers in America — Litigation - Intellectual Property
- 2026
Best Lawyers in America — Additional Areas of Practice:
- 2026
Best Lawyers in America — Commercial Litigation
- 2026
Best Lawyers in America — Litigation - Patent
- 2026
Best Lawyers in America — Securities / Capital Markets Law
- 2026

Bar Admissions

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

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