Catherine Thompson

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Ms. Thompson focuses her practice on white collar criminal defense, corporate investigations, and civil litigations. Her diverse civil litigation practice includes consumer protection, antitrust, and securities claims.

Before joining Halpern May Ybarra Gelberg LLP, Ms. Thompson practiced at Skadden, Arps, Slate, Meagher & Flom LLP. As a member of the litigation practice group, she handled large e-discovery projects, anti-SLAPP proceedings, dispositive motions, and complex internal investigations.

Ms. Thompson earned her J.D. from the UCLA School of Law, where she graduated Order of the Coif. During her time in law school, Ms. Thompson served on the Women’s Law Journal and externed for the Honorable Otis D. Wright in the Central District of California. She received her undergraduate degree from the University of Georgia, where she graduated magna cum laude with a B.S. in Psychology.

Prior to attending law school, Ms. Thompson served as a program coordinator for an educational non-profit foundation.


  • University of California, Los Angeles School of Law, J.D. Order of the Coif, Women's Law Journal
  • University of Georgia, B.S. Magna cum laude, Psychology

Representative Cases

  • Represented a lending company in obtaining summary judgment on antitrust claims seeking approximately $1 billion in damages arising from the allegedly fraudulent acquisition and enforcement of a patent in the indirect auto lending market
  • Represented a lender in a consumer class action regarding alleged underreporting of home mortgage interest payments on Internal Revenue Service Form 1098
  • Represented a Chinese peer-to-peer lending company in securing a dismissal with prejudice of federal securities class action claims
  • Represented the founder and former CEO of a semiconductor manufacturer in federal securities class action claims
  • Represented a large technology company in connection with an SEC and DOJ securities fraud investigation


  • Hon. Otis D. Wright - Central District of California