A person aggrieved by a subpoena issued pursuant to this part may, within a reasonable time, file a motion to dismiss the subpoena and, in the case of a subpoena duces tecum, to limit its scope. The motion must be granted if the subpoena was improperly issued or, in the case of a subpoena duces tecum, if it is overly broad in its scope.
Relief From Improper Subpoena
Mont. Code Ann. § 46-4-303, under Investigative Subpoenas -- Reporting Requirement for Peace Officers.
Mont. Code Ann. § 46-4-303