Will Um is a nationally recognized litigator who focuses his practice on complex business litigation, insurance recovery advice, and related coverage litigation. Mr. Um advises and represents corporate policyholders in complex insurance coverage claims relating to a variety of matters, including data breach and privacy issues, labor and employment, class actions, intellectual property disputes, media liability, professional services liability, directors and officers liability, and various environmental and toxic tort matters. He also handles general business litigation matters involving complex commercial contracts, fraud and misrepresentation claims, and unfair competition and unfair business practices. Over the course of his career, Mr. Um has recovered hundreds of millions of dollars for his clients in various types of insurance matters. Mr. Um represents a broad range of clients including companies specializing in technology, entertainment, aerospace, professional services, manufacturing, and oil and gas production.

Prior to joining the firm, Mr. Um was a policyholder counsel in the Los Angeles office of an international law firm where he handled major, multi-party complex litigation matters in both state and federal courts. In addition to trial work, Mr. Um served as lead counsel in arbitration proceedings across the country and secured numerous multi-million dollar arbitration awards, including one of the largest defense fee arbitration awards in California history.

Mr. Um is a frequent guest lecturer at the University of California, Irvine School of Law.

Mr. Um was listed in 2017, 2018 and 2019 by The Best Lawyers in America® for Insurance Law. He was recognized as a Southern California “Super Lawyer” for Insurance Coverage in 2013 and a “Rising Star” in 2007 and the three years immediately preceding by Super Lawyers magazine.


Boston University School of Law, J.D. (1993) cum laude

University of California, Irvine, B.A., Economics and Psychology, Minor in Business Management (1990)


California (1993)

Court Admissions

U.S. Court of Appeals for the Ninth Circuit

U.S. District Court for the Central District of California

U.S. District Court for the Northern District of California

U.S. District Court for the Northern District of Texas

U.S. District Court for the District of Hawaii

Professional & Community Activities

American Bar Association, Insurance Coverage Litigation Subcommittee on Advertising/Intellectual Property, Co-Chair

American Bar Association, Litigation and Torts and Insurance Sections, Member

Association of Business Trial Lawyers, Member

California Bar Association, Insurance Law Committee and Business Law Section, Member

California Minority Counsel Program, Member

Inner City Law Center, Board of Directors, Member

Law360 Insurance Editorial Advisory Board, Member

Los Angeles County Bar Association, Member

Rolling Hills United Methodist Church, Board of Directors, Member, Finance Committee, Member

University of California, Irvine Alumni Association, Board Member/Director and Corporate Secretary

Volunteer and Pro Bono Services Provided to Alliance for Children’s Rights, Inner City Law Center, Public Counsel and Public Law Center


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