Ohio Rev. Code § 1303.66: Discharge and effect of discharge - UCC 3-601.

(A) The obligation of a party to pay the instrument is discharged as stated in this chapter or by an act or agreement with the party that would discharge an obligation to pay money under a simple contract.

(B) The discharge of the obligation of a party is not effective against a person acquiring rights of a holder in due course of the instrument without notice of the discharge.