J. Walter Sinclair - Holland & Hart LLP

J. Walter Sinclair

Listed in Best Lawyers since 2007
Phone: 208-383-3928

Mr. Sinclair provides clients the perspective of an experienced trial lawyer in a wide range of complex disputes. In practice since 1978, Mr. Sinclair has developed a well-seasoned trial practice with an emphasis on business, corporate, and complex litigation matters associated with agricultural product liability, antitrust, class action, complex commercial contract disputes, environmental insurance coverage, insurance coverage and risk management, insurance mass tort, probate disputes, product liability, real estate, and securities litigation.

He is a trial lawyer with extensive bench and jury trial experience, having handled 30 jury trials and 11 bench trials.

He served as lead counsel for DuPont in an agricultural mass action concerning herbicide damage to the crops of more than 100 plaintiffs — a case that lasted for 10 years, including a four-month jury trial. Mr. Sinclair has also represented a local agricultural cooperative in a breach of contract and antitrust jury trial. He has practiced in courts throughout the United States.

Mr. Sinclair is admitted to practice in Idaho, Washington, and Oregon. He is also admitted to practice before the U.S. District Court for the Districts of Idaho, Washington, and Oregon and the U.S. Court of Appeals for the Ninth Circuit.

Stanford UniversityBS 1975University of IdahoJ.D. 1978
American College of Trial LawersInternational Academy of Trial LawyersAmerican Board of Trial AdvocatesAmerican Inns of CourtAmerican Bar AssociationInternational Association of Defense CounselLawyers for Civil Justice

Case History

Adams v. DuPont — Mass tort agricultural products liability case defended by Mr. Sinclair.  Over 100 Plaintiffs and lasted over 10 years.
Mueller v. St. Lukes Regional Medical Center — Mr. Sinclair defended the regional hospital on both constitutional and tort claims resulting in a defense verdict and multiple appeals to the 9th Circuit Court of Appeals
Aardema v. Darigold — Mr. Sinclair defended Darigold against a breach of fiduciary duty and fraud claim by 3 of the largest dairies in the country to a successful defense verdict.

Client Comments

"Walt Sinclair is the reason Stole Rives has such a great reputation as a trial firm."

-Chip Cole
Albertson's LLC

"Walt is the most effective commercial litigator in the Northwest. He is very sharp, and quickly focuses on the key issues in litigation. He surrounds himself with very competent associate counsel and staff who do an equally good job. I have no hesitation in recommending him to others, and I often do."

-Chip Cole
Albertson's LLC

"I would highly recommend Mr. Sinclair to handle complex commercial litigation. His skills both before and during trial are outstanding."

-John Sims
Executive Vice President and Genreal Counsel (Retired)
Albertsons, Inc

"He has great legal skills and customer relations. He really understands the client's business and the implications of legal advice. He is wonderful to work with, professionally, and he is very personable. I would give him an unqualified recommendation for any issue of law."

-Janine Sarti
Regional Vice President, General Counsel
St. Luke's Health System

"Mr. Sinclair's ability to quickly understand complicated issues, focus on critical elements, and communicate in a simplified and compelling manner make him invaluable to clients and peers alike."

-Steve Semingson
Civic Partners, Inc.

Office Location

800 West Main Street, Suite 1750
Boise, ID 83702
United States

Lawyer of the Year Awards

2015 Lawyer of the Year in Bet-the-Company Litigation of the Boise Metro Area2011 Lawyer of the Year in Bet-the-Company Litigation of the Boise Metro Area
J. Walter Sinclair has earned a Lawyer of the Year award for 2015!J. Walter Sinclair has earned a Lawyer of the Year award for 2011!

Practice Areas

Bet-the-Company Litigation
Commercial Litigation (Antitrust, Civil Litigation, Class Actions, Commercial Disputes, Complex Litigation, Mass Tort, Securities)
Litigation - Antitrust
Litigation - Securities
Litigation - Trusts and Estates

Other Information

Gender: Male