Atty. Darryl M. Woo
Darryl Woo is a veteran trial lawyer who has successfully tried numerous cases to verdict, and concentrates his practice on patent litigation and other complex technology litigation, principally in the areas of semiconductors, information technology, life sciences and biotechnology. He has appeared as lead counsel in patent litigation across the country, including the ITC, dealing with technologies ranging from software to semiconductor fab equipment, materials chemistry, voice over IP, fiber optic networking, bio assays, diagnostic tools, medical devices, pharmaceuticals, and recombinant DNA.
Profile Summary
About Darryl M. Woo at a glance
Darryl M. Woo is a patent and ip attorney based in San Francisco, California, practicing at Goodwin. Educated at Georgetown University (J.D., 1981). Recognitions include Best Lawyers in America — Litigation - Intellectual Property (2026), Best Lawyers in America — Litigation - Patent (2026), and Best Lawyers in America — Patent Law (2026). Serands clients in San Francisco, CA and the surrounding metropolitan area.
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About
- Darryl Woo is a veteran trial lawyer who has successfully tried numerous cases to verdict, and concentrates his practice on patent litigation and other complex technology litigation, principally in the areas of semiconductors, information technology, life sciences and biotechnology
- He has appeared as lead counsel in patent litigation across the country, including the ITC, dealing with technologies ranging from software to semiconductor fab equipment, materials chemistry, voice over IP, fiber optic networking, bio assays, diagnostic tools, medical devices, pharmaceuticals, and recombinant DNA
- In addition, Darryl has represented a range of clients in copyright, trademark and trade dress infringement cases, trade secret and licensing disputes, unfair competition, trade libel, false advertising, and other complex litigation
- Darryl has been named to The Best Lawyers in America©, one of the Top 100 Leading Lawyers in California in 2007, a Top 75 IP Lawyer in California in 2014, and to the IAM Patent 1000 list of The World’s Leading Patent Practitioners from 2013–2016
- Darryl serves as Co-Chair of the Intellectual Property practice of Vinson & Elkins LLP
Practice Areas Explained
Darryl M. Woo's Areas of Practice
Each practice area below reflects the types of cases Darryl M. Woo handles, with a brief overview of what that area of law covers.
Darryl M. Woo is one of 20,749 patent attorneys indexed nationally. Browse patent attorneys in California →
IP attorneys protect inventions, brands, and creative work through patent prosecution, trademark registration, copyright, and trade-secret enforcement.
Darryl M. Woo 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 San Francisco 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 San Francisco or all attorneys in California.
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