Image: David Walsh

David Walsh

Of Counsel, Litigation Department


David Walsh is of counsel in the Litigation practice of Paul Hastings and is based in the Firm’s Los Angeles office. Mr. Walsh handles complex litigation matters—including class actions and environmental and employment litigation–as well as data security, privacy, and advertising issues. He has successfully represented leading consumer products companies and a range of other businesses in significant litigation, administrative, and counseling matters.


  • Thomson Reuters Independently Rated Stand-Out Lawyer, 2022-2023
  • Recognized as an Environmental Litigation Super Lawyer, Super Lawyers, 2004 to 2022
  • Recognized as Local Litigation Star - Securities, United States, Benchmark Litigation, 2013 to 2022
  • Recognized as California Litigation Star, Benchmark Litigation, 2020


  • University of California, Santa Barbara, B.A., 1982
  • University of Southern California, J.D., 1985


  • Represented a major consumer electronics manufacturer in a series of class actions alleging misleading advertising and other misrepresentations
  • Represented the world’s largest provider of wireless insurance services in multiple nationwide class actions alleging that the company’s marketing materials were deceptive and that its claims-handling process was fraudulent
  • Represented a major pharmaceutical distributor in patient privacy claims
  • Represented an internal food company in mislabeling and environmental class actions
  • Represented high-end headphone maker in $100 million-plus royalties case

Engagement & Publications

  • Regularly participates in panel discussions on class certification claims and other related topics
  • Unfair Competition, Chapter 7 in California Business Litigation 2016, The Recorder


  • Member, Board of Directors for Urban Compass
  • Member, California Lawyers Association Privacy Law Section
  • Lawyer Representative, Ninth Circuit Judicial Conference
  • Mediation Panel, U.S. District Courts
  • Member, USC Gould Law School Board of Councilors
  • Chair, USC Gould Law School Board of Councilors’ Judicial Clerkship Committee
  • Chair, Hon. Howard B. Turrentine Fund
  • Member, Board of Directors, Inner City Law Center
  • Trustee, Catholic Charities of Los Angeles
  • Past Chair, QueensCare Corporation
  • Former Chair, Chrysalis
  • Past President, Urban Compass
  • Past Board Member, St. Marta Hospital Foundation, the American Lung Association, QueensCare Health Centers
  • Past President, Society of the Friendly Sons of St. Patrick
  • Co-Chair, the Polytechnic School’s Annual Leadership Committee

Practice Areas

Class Actions

Mass Tort, Toxic Tort, and Environmental Litigation


Employment Law

Data Privacy and Cybersecurity




California Bar


USC Gould School of Law, J.D. 1985

University of California, Santa Barbara, B.A. 1982

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