O’Melveny Worldwide

Matthew Kaiser is an experienced litigator and trial attorney who focuses his practice on complex commercial litigation. Matthew helps clients navigate product liability / mass tort cases and class actions at both the trial and appellate level. His recent clients include health care and pharmaceutical companies, mass media conglomerates, an aerospace manufacturer, and a videogame publisher. He thrives on complex and challenging matters, and his unwavering attention to detail and dedication to excellence delivers results even in the most difficult cases.

In addition to his regular practice, Matthew devotes his spare time to pro bono matters, with a recent focus on securing asylum for unaccompanied minors under the Trafficking Victims Protection Reauthorization Act and Convention Against Torture.


Bar Admissions

  • California
  • District of Columbia

Court Admissions

  • US District Court, Central and Northern Districts of California


  • Loyola Law School, J.D., summa cum laude; Sayre Macneil Scholar; articles editor, Loyola Law Review; Order of the Coif
  • DePaul University, B.A., Philosophy; cum laude; Dean's List

Professional Activities


  • Honorable Margaret M. Morrow, U.S. District Court for the Central District of California


  • “The Federal Circuit's Unbounded Conception of Inherency in Patent Law,” 47 Loy. L.A. L. Rev. 345 (2013)