Katie Seiden




  • UCLA School of Law (J.D., 2015) Order of the Coif
  • University of Southern California (B.A., 2011, Communication) cum laude; Dean's List
  • Hon. Philip S. Gutierrez, U.S. District Court for the Central District of California
  • California

Katie Seiden’s practice focuses on high-stakes business disputes and complex litigation. Ms. Seiden has litigated on behalf of plaintiffs and defendants in fraud, conspiracy, employment, consumer protection, privacy, and class action matters. She has experience in both state and federal court at various stages of litigation and investigations, including drafting pleadings and dispositive motions, taking and defending depositions, preparing witnesses, and managing discovery efforts.

Ms. Seiden has also worked with the Los Angeles Center for Law and Justice, a legal advocacy organization for low-income and immigrant communities, where she recently obtained a permanent restraining order on behalf of a domestic violence victim and her child.

During law school, Ms. Seiden was named a Michael T. Masin Scholar and won the Lawrence E. Irell Prize for achieving the highest grade-point average after the first year of law school. While attending law school, Ms. Seiden participated in the Criminal Trial Advocacy Clinic and the Supreme Court Clinic, and externed for the U.S. Attorney’s Office in the Central District of California.


Successfully resolved a complex fraud case, with total recovery of more than $65 million, for Qualcomm against a former senior engineer arising from his sophisticated scheme to sell technology he had secretly developed while working for the company.

Represent a global fast food restaurant corporation in a trade secret misappropriation arbitration against its former CEO.

Achieved voluntary dismissal of all claims in a putative class action against Nutraceutical Corporation, a leading manufacturer of nutritional supplements and food products.

Represent Bluegreen Vacations Corporation in a putative class action alleging a violation of California’s Invasion of Privacy Act (CIPA).

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Represent biotech firm Sorrento Therapeutics as plaintiff in multiple litigations alleging a high profile business partner’s scheme to “catch and kill” Sorrento’s promising cancer drug, Cynviloq.

Represented Sumner M. Redstone in an elder abuse action to recover $150 million from his former companions.