David L. Larson focuses his practice on patent and other intellectual property litigation and counseling. He has extensive experience in domestic and international intellectual property disputes involving a wide variety of high-tech areas, including electronics and semiconductors, computer software and network devices, as well as several life science technologies, including hormone synthesis, pharmaceutical ointments, extended release drug delivery systems and antibody therapies. He has represented clients in several federal courts around the country, in the US International Trade Commission (ITC) and in California state courts. His recent patent trials have included significant wins in the District of Delaware, the District of New Jersey, the Northern District of California and the Western District of Wisconsin.

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Repräsentative Mandate

  • Represented Amgen, a leading biotechnology company in the US District Court of Delaware as plaintiff, resulting in (i) a stipulation to infringement, and (ii) rejection by the jury of defendants’ assertions that the antibody patents were invalid
  • Represented Trend Micro, a major antivirus/security software manufacturer in the US District Court of Delaware in defense against three patents, all of which were found invalid for improperly claiming abstract ideas, and thus, patent-ineligible subject matter
  • Represented Depomed, a rising specialty pharmaceutical company, as plaintiff, in a trial in the US District Court of New Jersey, resulting in a finding of infringement of all seven asserted patents by a defendant generic drug manufacturer, which led to a subsequent agreement that the defendant would not bring infringing products to market

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  • The Legal 500 USA 2007


  • David has represented numerous pro bono clients during his career, including matters involving victims of fraud and immigration issues
  • For several years, David has coached a high school mock trial team that has consistently placed in the top 10 schools in California, winning the California State Mock Trial Championship in 2014 and placing second in 2016


Georgetown University Law Center, JD, 1983
Stanford University, BS, Chemical Engineering, 1978


Courts / Agencies
US Court of Appeals for the Ninth Circuit
US Patent and Trademark Office

David L. Larson

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