In Nevada, the defense of mutual mistake (or bilateral mistake) is available where:
- Mistake made by both parties at the time of formation of a contract concerning a vital fact upon which they based their bargain;
- The mistake materially and adversely alters the contract; and
- Conscious ignorance cannot support a mutual mistake defense.
In re Irrevocable Trust Agreement of 1979, 130 Nev. Adv. Op. 63 (Nev. 2014); Gramanz v. Gramanz, 113 Nev. 1, 8, 930 P.2d 753, 758 (1997).

Hon. Jay Young (Ret.) is a retired judicial officer with decades of experience presiding over complex civil litigation matters. Following a distinguished career on the bench, Judge Young now serves as a mediator, arbitrator, and court‑appointed special master, and discovery referee. Judge Young brings a disciplined, impartial, and results‑oriented approach to dispute resolution. Judge Young is based in Nevada and accepts appointments statewide and nationally, subject to agreement or court order. He can be reached at 855.777.4557 or info@armadr.com
Known for judicial temperament, analytical rigor, and practical problem‑solving, Judge Young assists litigants and counsel in resolving high‑stakes disputes efficiently and with integrity and employing best practices. He is recognized by U.S. News and World Report’s publication Best Lawyers as Arbitration Lawyer of the Year.