Okla. Stat. tit. 12A, § 12A-3-301: Person Entitled to Enforce Instrument

PERSON ENTITLED TO ENFORCE INSTRUMENT

"Person entitled to enforce" an instrument means (i) the holder

of the instrument, (ii) a nonholder in possession of the instrument

who has the rights of a holder, or (iii) a person not in possession

of the instrument who is entitled to enforce the instrument pursuant

to Section 3-309 or subsection (d) of Section 3-418 of this title.

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.