David Jeanchung Tsai

David Jeanchung Tsai

Pillsbury Winthrop Shaw Pittman LLP • San Francisco, CA
Antitrust Trade LawPersonal Injury

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Contact

Email
Phone
(415) 480-0511
Address
Four Embarcadero Ctr, San Francisco, CA, 94111, US

Professional

About

David Tsai is co-head of Pillsbury’s Taiwan practice and also resident in the San Francisco office. David focuses his practice on intellectual property, patent, trade secret, trademark, copyright, complex breach of contract, and product defect litigation in courts and international arbitration tribunals. David represents world-class corporations innovating biotechnology, pharmaceuticals, medical devices, software (internet and mobile apps), and hardware (semiconductors, set-top boxes, smartphones, solar wafers and light-emitting diodes/LED/OLED). In addition to litigation, his experience includes preparing and prosecuting U.S. electrical engineering patent applications, drafting patentability, freedom-to-operate and non-infringement opinions, as well as inter partes review (IPR) petitions. He represents his clients in patent negotiations, licensing and overall intellectual property strategy. David has been quoted in various business and technology publications including The New York Times and has written and lectured internationally on Hatch-Waxman/Abbreviated New Drug Application (ANDA) litigation, standard essential patents, FRAND/RAND royalties, internet software applications, and U.S. patent law. He serves as one of the 18 Lawyer Representatives to the U.S. District Court, Northern District of California.

About Antitrust Trade Law

Antitrust attorneys handle matters involving competition law, market practices, and trade regulations. They help businesses comply with antitrust laws and defend against claims. Common matters include price fixing, monopoly claims, merger review, trade practices.

Credentials

Education
N/A Santa Clara University School of Law JD - Juris Doctor N/A Stanford University M.S. N/A Harvard College A.B. N/A Phillips Exeter Academy
Languages
English | Chinese, Min Nan | Mandarin

Recognition & Involvement

Awards
2018 Super Lawyer (2013-present), Super Lawyers 2016 Heritage Award (Excellence in Civil Rights), California API Legislative Caucus 2015 Rising Star, Minority Corporate Counsel Association 2013 Lawyer on the Fast Track, The Recorder 2013 Best Lawyer Under 40 Award, National Asian Pacific American Bar Association
Associations
2018 - Present Asian American Bar Association of the Greater Bay Area President 2017 - Present Santa Clara Law Advisory Board 2016 - Present Bar Association of San Francisco Board of Directors 2011 - Present Ingram Inn of Court Executive Committee 2011 - 2012 Silicon Valley Intellectual Property Law Association President
Updated: Mar 08, 2026