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Best Lawyers in California, United States for Litigation - Patent
Corporate Law & Commercial Litigation Legal Guide 2025
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Aaron R. Hand is a top attorney recognized by Best Lawyers in the practice area(s) of Litigation - Intellectual Property and Litigation - Patent. Aaron R., who practices law in Redwood City, California, has been recognized since 2020. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Aaron R. is held by other top lawyers in the same geographic and legal practice area.
Mark Finkelstein is a partner at Umberg Zipser LLP with more than 23 years of intellectual property and complex litigation experience. He advises clients on matters involving patent, copyright, trademark, and trade dress infringement, as well as misuse of trade secrets, unfair competition, and other commercial disputes. Mark has significant first-chair trial experience in both state and federal courts, and has argued before the Federal and Ninth Circuits .Mark has been recognized for intellec...
Elizabeth L. Brann is a top attorney recognized by Best Lawyers in the practice area(s) of Litigation - Patent. Elizabeth L., who practices law in San Diego, California, has been recognized since 2026. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Elizabeth L. is held by other top lawyers in the same geographic and legal practice area.
Neel Chatterjee is a partner in Goodwin’s Intellectual Property practice and serves on the firm’s Executive Committee. An internationally recognized technology litigator and trial lawyer, Mr. Chatterjee has a proven track record of wins in hard-to-win technology cases. Mr. Chatterjee has a passion for representing entrepreneurs and disruptive technology companies, even at their earliest stages. His cases often break new ground in undefined areas of the law. Clients frequently turn...
James P. Conley is a top attorney recognized by Best Lawyers in the practice area(s) of Litigation - Intellectual Property and Litigation - Patent. James P., who practices law in San Diego, California, has been recognized since 2016. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which James P. is held by other top lawyers in the same geographic and legal practice area.
Brian Kennedy focuses on intellectual property and complex commercial litigation. My focus My litigation practice focuses on various intellectual property disputes dealing with all aspects of patent litigation. I represent clients in commercial disputes across a wide range of technologies. I develop and execute case strategies and have extensive experience with discovery, due diligence, arguing motions, and case management. I am highly skilled at developing patent infringement and invalidity ...
David J. Tsai is a top attorney recognized by Best Lawyers in the practice area(s) of Litigation - Intellectual Property and Litigation - Patent. David J., who practices law in San Francisco, California, has been recognized since 2021. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which David J. is held by other top lawyers in the same geographic and legal practice area.
Peter K. Hahn is a top attorney recognized by Best Lawyers in the practice area(s) of Litigation - Patent. Peter K., who practices law in San Diego, California, has been recognized since 2013. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Peter K. is held by other top lawyers in the same geographic and legal practice area.
Callie A. Bjurstrom is a top attorney recognized by Best Lawyers in the practice area(s) of Litigation - Intellectual Property, Litigation - Patent and Trade Secrets Law. Callie A., who practices law in San Diego, California, has been recognized since 2019. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Callie A. is held by other top lawyers in the same geographic and legal practice area.
Elizabeth Day is a top attorney recognized by Best Lawyers in the practice area(s) of Litigation - Intellectual Property, Litigation - Patent and Patent Law. Elizabeth, who practices law in Redwood City, California, has been recognized since 2025. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Elizabeth is held by other top lawyers in the same geographic and legal practice area.
William (Bill) Gaede focuses his practice on intellectual property litigation in the life sciences and medical device industries. Bill serves as lead counsel for a wide range of companies and research institutes and has extensive experience in litigating life science technologies such as antibodies, proteins, small molecules and diagnostics. In addition to his jury trial experience, Bill has argued before the US Circuit Court of Appeals for the Federal Circuit. He further provides risk manage...
Our Methodology
Recognition by Best Lawyers is based entirely on peer review. Our methodology is designed to capture, as accurately as possible, the consensus opinion of leading lawyers about the professional abilities of their colleagues within the same geographical area and legal practice area.
The Process
Best Lawyers employs a sophisticated, conscientious, rational, and transparent survey process designed to elicit meaningful and substantive evaluations of the quality of legal services. Our belief has always been that the quality of a peer review survey is directly related to the quality of the voters.