Our People

University of Santa Clara, 1983 – B.S. Mechanical Engineering

University of Washington, 1991 – J.D. with honors; Moot Court Honor Board


United States District Court – Eastern and Western Districts of Washington

United States Court of Appeals – Ninth Circuit

United States Patent & Trademark Office

Washington State Bar Association
Washington Defense Trial Lawyers


John H. Wiegenstein



John Wiegenstein is managing partner and co-founder of Heller Wiegenstein PLLC. Prior to entering the legal profession, John worked at The Boeing Company as an R&D engineer, then left Boeing to attend the University of Washington school of law. After graduation in 1991 he joined Keller Rohrback LLP in Seattle, focusing his practice development on insurance defense, insurance coverage, environmental litigation, and products liability defense.

In 1997 John teamed up with Tom Heller to form Heller Wiegenstein PLLC. In the 20 years since the firm began, John has handled a broad variety of cases in state and federal courts, including personal injury, construction defect litigation, real estate and boundary disputes, landslide and drainage cases, environmental and land use litigation, insurance coverage claims, and copyright and trademark disputes. John has handle many arbitrations and mediations in addition to his trial experience, and has served as an arbitrator in both mandatory arbitration cases for superior court, and in private arbitrations. John also serves as a Settlement Guardian ad Litem for court approval of settlement of minor’s claims.

With Tom Heller’s retirement at the end of 2016, John now serves as managing partner of the firm.


John is a Seattle native and lives with his wife Laurie in Hansville, Washington. When not busy with firm matters, John spends time with his family, flying the RV-6 airplane which he built, N727JW, and adventure motorcycle traveling. John also breaks out the fly rod occasionally and tries – with sporadic success – to entice the local salmon, steelhead and trout to the fly.