Sole proprietors and general partnerships that wish to conduct business under a name other than the real name of the person(s) must file a Registration of Firm Names with the county Register of Deeds. Other business entities may also elect to file a trade name with the Secretary of State. This form is used to register a firm name with the Register of Deeds for the purpose of complying with the requirement of section 134.17 of the Wisconsin Statutes.