John Cadagan

John Cadagan


John Cadagan litigates in state and federal courts across Washington. He has tried civil jury and bench trials to verdict in courthouses on both sides of the Cascades. At the appellate level, he has briefed and argued cases in all divisions of Washington’s Court of Appeals as well as the Supreme Court. 

His practice is focused on representing policyholders in first- and third-party coverage disputes with insurers, and litigating on behalf of small- to medium-sized companies and public utilities in complex commercial disputes. John’s clients range from individuals and small businesses to multinational joint ventures. 

John maintains an active appellate practice, regularly appearing in state and federal appeals courts and filing submissions including appellate briefs, motions, and responses. His appellate practice also includes advising clients and other attorneys about the appellate process and opining on the potential success of various arguments. 

Before joining GTTC, John clerked for the Honorable Linda C.J. Lee at the Washington State Court of Appeals, Division II. His years at the court provided unique insight into the appellate court system and shaped his approach to litigating in both trial and appellate courts.

Recent published decisions include:

Rinehold v. Renne, 492 P.3d 154 (2021)

Seattle Tunnel Partners v. Great Lakes Reinsurance (UK), 492 P.3d 843 (2021)

Walker v. Orkin, LLC, 10 Wn. App.2d 565, 448 P.3d 815 (2019)

Markoff v. Puget Sound Energy, Inc., 9 Wn. App.2d 833, 447 P.3d 577 (2019)

Toogle Accordion State

Professional Experience

Representative Matters

Professional & Civic Involvement

  • UW School of Law Falknor Appellate Advocacy Competition, Judge
  • Washington DECA, State Competition Judge
  • American Bar Association, Member
  • King County Bar Association, Member
  • Spokane County Bar Association, Member

Representative Clients

Publications & Presentations

Bar/Court Admissions

  • Washington State Bar
  • United States Court of Appeals, Ninth Circuit
  • United States District Court, Eastern District of Washington
  • United States District Court, Western District of Washington 


After clerking in Tacoma and practicing in Seattle for several years, my wife and I returned to our hometown of Spokane. I enjoy being outdoors, and try to take every opportunity to be outside fishing, horseback riding, snow skiing, or spending time at the lake with my family. My wife and I also enjoy regularly attending Husky football games and Gonzaga basketball games whenever we have the chance.


  • J.D., Gonzaga University School of Law, cum laude, 2014
    • Associate Editor of Gonzaga Law Review
    • CALI Award for Academic Excellence in several subject areas
    • Faculty-appointed Academic Resource Program Tutor
  • B.Sci. (Economics), University of Washington, 2011
    • Dean’s List
    • Omicron Delta Epsilon – International Honor Society in Economics


  • Recognized by Washington Super Lawyers
John D. Cadagan
Rated by Super Lawyers

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