Utah Code § 26B-5-320

Any person who, without permission, enters any of the buildings or enclosures appropriated to the use of patients, or makes any attempt to do so, or enters anywhere upon the premises belonging to or used by the division, a local mental health authority, or the state hospital and commits, or attempts to commit, any trespass or depredation thereon, or any person who, either from within or without the enclosures, willfully annoys or disturbs the peace or quiet of the premises or of any patient therein, is guilty of a class B misdemeanor.