Academy Member Inducted 2024

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Hon. Timothy J. Thomason (Ret.), Mediator & Arbitrator, Phoenix, Arizona.

Hon. Timothy J. Thomason (Ret.)

Aiken Thomason
5090 North 40th Street
Suite 207
Phoenix, AZ 85018
Tel: 602-718-3340
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Recognized to Arizona Chapter for Mediation & Arbitration Other ADR Services: Court-Appointed Neutral (Special Master), Discovery Referee, Early Neutral Evaluation, Fact Finding, Med-Arb, Mini-Trial Judge
Video Conferencing
  • Practice Commenced1990
  • # of MEDS (as of 19/7/24)200
  • # of ARBS (as of 19/7/24)20
Current Practice
Online / In-Person


Over a thirty-year career as a trial lawyer, and a ten-year career as a trial court judge, retired Judge Timothy J. Thomason has seen and carefully evaluated almost every type of civil case. Tim was described by Chambers USA as “one of the most experienced trial lawyers in the State of Arizona.” He tried almost 100 cases in state and federal court and in arbitration tribunals. Tim also led over 40 appeals through completion.

Tim has spent the last ten years as a trial court judge in Maricopa County Superior Court. The last five years was spent on the Commercial Court, a specialty court designed to handle complex commercial disputes. During his tenure on the Commercial Court, Tim was the “go to” Settlement Conference Judge. When parties to difficult cases wanted a judge to help resolve their cases, they usually asked to come before Judge Thomason. Tim handled dozens of Settlement Conferences, most of which were successfully resolved. Tim was known for his calm determination in getting complicated cases resolved.

As a judge, Judge Thomason was known for writing detailed rulings, on the most complex of topics. Judge Thomason was also widely recognized for his work ethic, timeliness and efficiency, typically issuing his rulings the day after oral argument.

Tim has now turned his attention to a full time ADR practice. Tim’s background as a trial lawyer and a Commercial Court and Settlement Conference judge provides him with a unique ability to evaluate cases. Despite being new to a private ADR practice, Tim has conducted well over 200 Settlement Conferences as a judge and a judge pro tem. Experienced lawyers and sophisticated companies trust Tim to reliably evaluate and resolve their cases. Tim is already a member of the American Academy of Distinguished Neutrals. ?

Tim’s prior trial and judicial experience also provides him with the necessary background to serve as an arbitrator on complex cases. Tim is a designated arbitrator on the commercial panel for the American Arbitration Association. ?

Tim’s accomplishments during his legal career were numerous. He was awarded fellowship in the American College of Trial Lawyers, the older and leading organization of American trial lawyers; fellowship is reserved for only the most accomplished lawyers. Tim authored numerous professional and academic publications. He was the primary author and editor of The Arizona Trial Practice Manual. Tim was honored every year for a ten-year time period as one of the Top 50 Lawyers in Arizona by Southwest Super Lawyers. He was the 2010 top lawyer in Arizona for real estate litigation.

Tim served on the Board of Directors of Childsplay, the nationally renowned theater for children and families, for almost twenty years.  For three years Tim served as Board President, overseeing an annual budget of over $3 million. Tim is now a Vincentian, devoting his time to serving the poor through St. Vincent de Paul.

Tim and his wife Pierrette are the proud parents of four children between them. Tim’s daughter Rachel is the mother of two beautiful youngsters, Olivia and Henry. There is nothing on earth that Tim loves to do more than spend time with his grandchildren.

Case Experience

  • Agricultural
  • Appellate
  • Automotive
  • Banking & Finance
  • Bankruptcy/Creditors
  • Business Dissolution
  • Class Actions
  • Commercial/Business
  • Community Associations
  • Condominiums
  • Construction
  • Consumer Fraud
  • Contract Disputes
  • Divorce (High Asset)
  • Education
  • Eminent Domain
  • Employment
  • Engineering
  • Family Businesses
  • Franchise
  • Health Care
  • Insurance
  • Intellectual Property
  • International
  • Internet
  • Labor/Unions
  • Land Use/Planning
  • Landlord/Tenant
  • Legal Malpractice
  • Libel & Slander
  • Local Govt./Municipalities
  • Medical Devices
  • Medical Malpractice
  • Mergers & Acquisitions
  • Native American
  • Natural Disasters
  • Non-profit Organizations
  • Nursing Homes
  • Partnerships
  • Personal Injury
  • Pharmaceuticals
  • Premises Liability
  • Probate
  • Product Liability
  • Professional Fees
  • Professional Liability
  • Professional Malpractice
  • Professional Negligence
  • Railroad & Trucking
  • Real Estate
  • Religious Institutions
  • Securities
  • Shareholder Disputes
  • Software
  • Sports
  • Technology
  • Telecommunications
  • Title Disputes
  • Torts
  • Trademarks/Patents
  • Transportation
  • Trusts / Estates
  • Unfair Competition
  • Wage & Hour/FMLA
  • Wrongful Death


  • J.D., Order of the Coif, University of Iowa, 1984
  • B.A., summa cum laude, Creighton University, 1981

Memberships & Affiliations

  • Fellow, American College of Trial Lawyers, 2010
  • Fellow, Litigation Counsel of America

Rates Information

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