Ohio Revised Code Title XIII. Commercial Transactions § 1331.12

(A) In any action or proceeding in quo warranto, in injunction, or otherwise brought by the attorney general or a prosecuting attorney under sections 1331.01 to 1331.14 of the Revised Code, all persons that are party to or participating in the trust or conspiracy against trade violative of those sections may be made parties defendant and summoned, whether or not they reside in the county in which the action or proceeding is instituted. Actions or proceedings in quo warranto and in injunction may be instituted simultaneously, or while one or another of them is pending, such actions or proceedings being started in the proper court as provided in section 1331.11 of the Revised Code, and no action or proceeding in injunction is a bar to an action or proceeding in quo warranto, nor is an action or proceeding in quo warranto a bar to one instituted to restrain and enjoin.

(B) Any civil or criminal action or proceeding for a violation of sections 1331.01 to 1331.14 of the Revised Code, other than one upon which an action was brought in any court by any person not later than forty-five days after the effective date of the current amendment, shall be forever barred unless commenced within four years after the cause of action accrued.