Ohio Rev. Code § 2301.141
Notwithstanding section 149.38 of the Revised Code, each clerk of a court of common pleas shall retain documentation regarding each criminal conviction and plea of guilty involving a case that is or was before the court. The documentation shall be in a form that is admissible as evidence in a criminal proceeding as evidence of a prior conviction or that is readily convertible to or producible in a form that is admissible as evidence in a criminal proceeding as evidence of a prior conviction and may be retained in any form authorized by section 9.01 of the Revised Code. The clerk shall retain this documentation for a period of fifty years after the entry of judgment in the case, except that documentation regarding cases solely concerned with minor misdemeanor offenses or minor misdemeanor traffic offenses shall be retained as provided in divisions (A) and (B) of section 1901.41 of the Revised Code, and documentation regarding other misdemeanor traffic offenses shall be retained for a period of twenty-five years after the entry of judgment in the case. This section shall apply to records currently retained and to records created on or after September 23, 2004.
R.C. §2301.141