John R. Dillon IV

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John R. Dillon IV


Albany Law School (J.D.)

Texas Tech University (B.A.)


Call: 480-776-3460

Our Attorneys

Practice Areas and Experience

John R. Dillon IV focuses on high-stakes, complex commercial litigation and dispute resolution. John has represented national and international clients in a variety of matters in both state and federal court.  High-profile cases have included contract disputes, property disputes, media and entertainment law, reputation management, environmental class actions, cryptocurrency related litigation, insurance coverage disputes, intellectual property claims, crisis litigation and trial team substitution.  Prior to joining the firm, John worked as an Associate in the Los Angeles and New York City offices of Withers Bergman LLP, one of the world’s largest international law firms.

Representative Cases and Clients

  • Second-Chair on trial team defending against damages claims for over one-hundred million dollars in Los Angeles County Superior Court.
  • Lead associate on trial team defending multi-million dollar defamation lawsuit in Orange County Superior Court.
  • Member of the trial team defending billion-dollar environmental and Natural Resource Damages (NRD) lawsuits involving alleged hazardous substance contamination of air, soil, surface and groundwater resources with allegations of adverse health effects.
  • Represented Fortune 100 company in prosecuting claims against its former law firm for breaches of fiduciary and contractual duties.
  • Represented former School Board trustee in prosecuting claims against a Texas School District for violations of the Voting Rights Act of 1965.
  • Intern for the Onondaga County District Attorney’s Office. Assisted District Attorney William J. Fitzpatrick with various projects including New York State’s Commission to Investigate Public Corruption under the Moreland Act.

Professional Experience

  • Withers Bergman LLP
  • Pierce Bainbridge Beck Price & Hecht LLP
  • Brewer, Attorneys & Counselors (formerly, Bickel & Brewer)


  • Texas Tech University (B.A.)
  • Albany Law School (J.D.)

Court Admissions

  • Arizona
  • New York
  • United States District Court, District of Arizona
  • United States District Court, Northern District of New York
  • United States District Court, Eastern District of New York
  • United States District Court, Southern District of New York
  • United States District Court, Northern District of Texas
  • United States District Court, Eastern District of Texas
  • State Bar of Arizona’s Civil Practice and Procedure Committee


John is from Plano, Texas. He is an avid fan of the Texas Tech Red Raiders. When not working, John enjoys spending time with his wife Ryan and their two children.