Zachary Flood


Zachary Flood


  • UC Santa Barbara, BS
  • UC Berkeley School of Law, JD

Zack Flood is a litigator with wide-ranging experience across multiple practice areas and high tech industries.  Zack approaches litigation with the analytic rigor and strategic incisiveness needed to pursue his clients’ goals as effectively and efficiently as possible.  He has hands-on experience in every phase of litigation including pre-suit counseling, complex written discovery, depositions, dispositive briefing, and oral argument.

Examples of his work include:

  • Representing an air-mobility pioneer in trade secret and patent litigation against a competitor in federal court in the Northern District of California.
  • Representing a clinical stage pharmaceutical company in trade secret litigation against former employees and a competitor in federal court in the District of Colorado.
  • Achieving a complete trial victory for a key-duplication startup regarding patent infringement claims brought by a competitor in federal court in the Eastern District of Texas.
  • Achieving a complete trial victory in litigation between two of the world’s largest technology companies regarding patent infringement claims in federal court in the Southern District of California.

Before joining Lewis & Llewellyn, Zack practiced at Quinn Emanuel Urquhart & Sullivan, LLP in San Francisco, California, representing clients ranging from early startups to Fortune 500 companies and in industries including pharmaceuticals, mobile banking, social media, live music, semiconductors, telecommunications, video streaming, and ad tech.

In law school, Zack received multiple awards recognizing him as the top student in classes including Constitutional Law, Contracts, Torts, Environmental Law, and Civil Trial Practice.  He also served as a Senior Articles Editor for the Berkeley Technology Law Journal.  Outside of school, Zack served as a Judicial Extern for the Honorable Jon S. Tigar of the Northern District of California and as a Law Clerk in the U.S. Department of Justice, Antitrust Division.

Prior to law school, Zack spent three years working in a neuroscience research lab at the Massachusetts Institute of Technology, studying the genetics of brain development.

Outside of the office, Zack splits his time between playing with his son, reading science fiction and history, hiking, and (attempting) to learn Japanese.

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601 Montgomery Street, Suite 2000, San Francisco, CA 94111