Wis. Stat. § 132.031: Certificate; evidence.

The department shall deliver to the person, corporation, association or union so filing or causing to be filed any such mark, or any assignment of such subject matter previously registered, or to any person, corporation, association or union renewing a registration, as many duly attested certificates of the registration or renewal of the same as may be desired. Any such certificate shall, in all suits and prosecutions arising out of or depending upon any rights claimed under such mark, be prima facie evidence of the adoption thereof and of the facts prerequisite to registrations thereof as required by s. 132.01.