Mat has extensive experience representing corporations and individuals in his litigation practice, which emphasizes employment law, trust and estate litigation, Indian law, and public law.

An experienced trial lawyer, he has obtained successful results for his clients, including trying numerous cases to jury verdict as lead counsel. Mat handles all aspects of complex litigation — from pre-suit investigation and discovery through dispositive motion practice and trial. He deals with post-trial proceedings as well as appeals, recently arguing and prevailing in a case defending tribal treaty interests before the Washington Supreme Court. Mat’s litigation experience is broad. He has advocated for clients in lawsuits relating to employment law, non-compete agreements, trusts and estates, fiduciary duties, public disclosure laws, the Public Records Act, antitrust law, class actions, breach of contract, deceptive trade practices, fraud, and trade secret misappropriation.

In 2016 Mat was named one of the Top 100 Lawyers in Washington State by Washington Super Lawyers. For the past 14 years, he has been recognized as a “Super Lawyer” and a “Rising Star.”

Mat currently serves on the firm's Executive Committee.


  • Washington
  • U.S. Supreme Court
  • U.S. District Court for the Eastern and Western Districts of Washington
  • U.S. Court of Appeals for the Ninth Circuit


  • University of Chicago Law School, J.D. (2002)
  • St. Olaf College, B.A. in Economics and Political Science, summa cum laude, Phi Beta Kappa (1996)

Recognition & Honors

  • Washington Super Lawyers (2014 - 2019)
  • Top-Rated Lawyer, West Coast, National Law Journal (2017)
  • Top 100 Lawyers, Washington Super Lawyers (2016)
  • Rising Star, Washington Super Lawyers (2006 - 2007, 2011 - 2012)
  • AV Preeminent Peer Review Rated, Martindale-Hubbell's highest ranking

Representative Work

  • Represented start-up company in defeating motion for preliminary injunction for alleged violation of non-compete agreement.
  • Tried, and won, a case involving fiduciary duty and employment disputes between co-founders of a technology consulting firm.
  • Successfully argued appeal to Washington Supreme Court in Cougar Den, Inc. v. Department of Licensing.
  • Recovered high six-figure award for accounting firm partner in claim against former employer.
  • Represented trustee of trust of high net worth individual in winning summary judgment and appeal.
  • Represented health care organization in trial over commercial contract.
  • Represented multinational electronics manufacturer in multidistrict antitrust actions alleging a price-fixing conspiracy.
  • Represented real estate partnership in claims brought by estate of former partner.
  • Represented individual with age discrimination claims against former employer.
  • Represented wireless carrier in consumer class actions.
  • Represented wireless carrier in employment dispute.
  • Represented software company in antitrust lawsuits brought by indirect purchasers taken to trial state courts and before European Commission.
  • Represented software company in nationwide consumer class action alleging violations of Washington Consumer Protection Act and RICO.
  • Represented pharmaceutical company in indemnification action and related qui tam fee dispute.
  • Represented utility in defeating preliminary injunction threatening construction of new generating capacity.

Publications & Presentations

  • "Non-Competes and Other Restrictive Covenants: What's Enforceable After January 1, 2020?" co-presenter, 2019 Employment Law Update for Washington Employers (November 2019)
  • "Sales Tax and Other Double Taxation Issues," presenter, 21st Annual Tax Conference, National Intertribal Tax Alliance (August 2019)
  • "U.S. Supreme Court Upholds Yakama Treaty Rights in Washington State Department of Licensing v. Cougar Den, Inc.," co-author, article, Indian Law Newsletter (Spring 2019)
  • "Treaty Rights and Reservation Disestablishment Before the U.S. Supreme Court," panelist, 2019 Indian Law Conference, Federal Bar Association (April 2019)
  • "Treaty Rights and Washington State Department of Licensing v. Cougar Den," panelist, Tenth Annual Indian Law Conference, Spokane County Bar Association Indian Law Section (March 2019)
  • "Washington Paid Sick Leave Law & Other Hot Topics - Your Questions Answered," panelist, 2017 Employment Law Update for Washington Employers (October 2017)
  • "Developments in Washington State Employment Law," presenter, 2017 Employment Law Update for Washington Employers (October 2017)
  • "Employment Practices Litigation Insurance (EPLI): Your Questions Answered," co-presenter with Carolyn Cairns, Stokes Lawrence Employment Law Institute (December 2015)
  • "Insurance Issues in Employment Litigation," presenter, Employment Law Institute CLE, King County Bar Association (September 2015)
  • WSBA’s Annual Antitrust, Consumer Protection and Unfair Business Practices Seminar, Antitrust presenter (November 2014)
  • "Noncompetes & Nonsolicitation," presenter, Stokes Lawrence Employment Law Institute CLE (August 2014)
  • "Recent Arbitration Law Developments - Washington State & Federal Law," co-presenter with Olivia Gonzalez, Stokes Lawrence Employment Law Institute CLE (August 2014)
  • "Should You Include Arbitration Clauses in Employment Contracts?" co-presenter with Olivia Gonzalez, Stokes Lawrence Employment Law Institute Client Workshop (August 2014)
  • "Superior Court Boot Camp:  A Motion and Trial Practice Skills Seminar," presenter (2014)
  • WSBA's Annual Antitrust, Consumer Protection and Unfair Business Practices Seminar, co-chair (November 2013)
  • "The Importance of Filing Creditor's Claims for Real Estate Lenders and Homeowners' Associations in a Challenging Economy," co-authored with Scott A.W. Johnson and Joan Hemphill, WSBA Real Property Probate and Trust Section Newsletter (Fall 2012)
  • "Jury Selection and Opening Statements in an Employment Case," Employment Litigation from Start to Finish, presented by NBI (2012)
  • "Antitrust Compliance Review," closely held manufacturing company (most recently 2012)
  • "Managing Risks for Employers: Trends and Tips," presenter, Stokes Law Briefs for Closely Held Businesses (June 2011)
  • "Sexual Harassment Compliance Training," various employers (multiple dates)
  • "It's Out of My Hands? A party's duty to preserve documents in the possession of others," co-authored with Charles Ha, LexisNexis Mealey's Litigation Report, Discovery, Vol. 5, Issue 8
  • Antitrust Law Developments, contributing drafter for the ABA Section of Antitrust Law's annual review (2008)

Professional & Community Activities

  • In early 2011 Mat served as a Special Deputy Prosecuting Attorney during a fellowship with the King County Prosecutor's Economic Crimes Unit. The Prosecutor's Trial Fellowship Program enlists lawyers from law firms as trial attorneys assigning them a regular caseload of felony criminal trials.
  • Mat dedicates a portion of his practice to providing individuals with legal services pro bono. He has represented victims of domestic violence in obtaining protection orders and determining child custody. In 2017, he litigated pro bono the question of whether the State of Washington is adequately providing for indigent public defense services. 

Background & Interests

Mat litigated cases with international law firm Heller Ehrman for six years prior to joining Stokes Lawrence in 2008.