Mich. Comp. Laws § 14.322

Sec. 22. (1) Upon commencement of an action brought pursuant to section 21 or section 25, the clerk of the court shall mail a copy of the complaint to the attorney general, and upon entry of a judgment or decree in the action, the clerk of the court shall mail a copy of the judgment, decree, or order to the attorney general. (2) In a subsequent action by the attorney general brought pursuant to section 20 proof of a violation of a permanent injunction issued pursuant to section 16 is conclusive evidence that the defendant engaged in a method, act, or practice which is unlawful under this act.