Zachary Flood


Zachary Flood


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

Zack Flood is a dedicated civil litigator with extensive experience across multiple practice areas and high-tech industries. Zack approaches litigation with the rigor and strategic focus necessary to pursue his clients’ goals as effectively and efficiently as possible, whether through early resolution or through jury verdict. He has hands-on experience in every phase of litigation, including dispositive motion practice, stand-up trial experience, and complex post-trial and appellate practice.

Examples of his experience include:

  • A complete trial victory on behalf of a leading provider of employee review software in trade secret litigation against a competitor in federal court in the Northern District of California, resulting in a $25.7 million jury verdict.
  • A complete trial victory on behalf of one of the world’s largest technology companies in patent litigation against the world’s most valuable company in federal court in the Southern District of California, resulting in a $31.6 million jury verdict.
  • A complete trial defense victory on behalf of a key-duplication startup in bet-the-company patent litigation brought by a competitor in federal court in the Eastern District of Texas.
  • Successfully representing a music recommendation and ticketing startup in trade secret and antitrust litigation against the world’s largest live entertainment and ticketing company in federal court in the Central District of California.
  • Successfully representing a victim of childhood sexual abuse in litigation against a public school district through trial, resulting in a $3.5 million settlement.

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.

In law school, Zack received multiple awards recognizing him as the top student in classes including Constitutional Law, Contracts, Torts, Civil Trial Practice, Environmental Law, and Legal Writing. 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