People

Michael Sitzman

Partner

San Francisco

Michael Sitzman is an accomplished first-chair trial lawyer in high-stakes biologic and drug patent litigation. He represents biotechnology and innovator pharmaceutical companies in patent litigation, including abbreviated new drug application (ANDA) litigation under the Hatch-Waxman Act, and other intellectual property matters across the life sciences industry.

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Results
  • Secured a significant win for Taiho Oncology and Taiho Pharmaceutical in Hatch-Waxman Act litigation against four generic companies seeking to launch generic versions of the oncology drug LONSURF®*
  • Secured complete relief for Acorda Therapeutics in arbitration and before the US District Court for the Southern District of New York against Alkermes plc for charging royalties in contravention of the Supreme Court’s ruling in Brulotte*
  • Successfully represented Allergan before the International Trade Commission in a high-profile IP dispute over the genetic origin of C. botulinum, a toxin strain, and the process parameters used to manufacture BOTOX® that resulted in a broad exclusionary order against Daewoong Pharmaceutical and Evolus, Inc.*

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Recognitions
  • Chambers USA, 2026
  • Legal 500 US, Recommended, 2025
  • Legal 500 US, Recommended, Patent Litigation: Full Coverage, 2020-2021 and 2023-2024
  • Legal 500 US, Recommended, Patents: Litigation (International Trade Commission), 2023-2024
Capabilities and industries
Regional markets
Community
  • Federal Circuit Bar Association, Global Fellow
Credentials
Education
  • University of the Pacific McGeorge School of Law, JD, Order of the Coif
  • University of California, Davis, BS, Molecular Genetics
Admissions
  • California
Courts / Agencies
  • Supreme Court of the United States
  • US Patent and Trademark Office
  • US Court of Appeals for the Ninth Circuit
  • US Court of Appeals for the Federal Circuit
  • US Court of Appeals for the District of Columbia Circuit
  • US District Court for the Northern District of California
  • US District Court for the Central District of California
  • US District Court for the Eastern District of California
  • US District Court for the Southern District of California