Wis. Stat. § 403.301: Person entitled to enforce instrument.

“Person entitled to enforce” an instrument means the holder of the instrument, a nonholder in possession of the instrument who has the rights of a holder, or a person not in possession of the instrument who is entitled to enforce the instrument under s. 403.309 or 403.418 (4). A person may be a person entitled to enforce the instrument even though the person is not the owner of the instrument or is in wrongful possession of the instrument.