If the evidence shows that the party against whom the writing is offered has at any time admitted its execution, no other evidence of the execution need be given if the instrument is one produced from the custody of the adverse party and has been acted upon by the party as genuine.
Utah Code § 78B-5-610
When unnecessary
Renumbered and Amended by Chapter 3, 2008 General Session
Official source: Utah State Legislature. Reproduced from public-domain Utah statutes; confirm against the official source for the current text. Not legal advice.