Ohio Rev. Code § 147.11: Forfeiture.

A person appointed notary public who performs any act as such after the expiration of the person's term of office or after the person resigns the person's commission, knowing that the person's term has expired or that the person has resigned, shall forfeit not more than five hundred dollars, to be recovered by an action in the name of the state. Such act shall render the person ineligible for reappointment.