Ohio Rev. Code § 1331.021
No person, corporation, partnership, or combination shall acquire control of an Ohio corporation or its assets where the effect of such acquisition may be to substantially lessen competition in any market for petroleum products in Ohio, or to substantially lessen, directly or indirectly, the number of competitors in any market for petroleum products in Ohio, or to diminish the availability of supply of any petroleum product to persons purchasing such product for resale in Ohio. Upon request of the governor or the general assembly, the attorney general shall bring an action in the court of common pleas of Franklin county to enjoin any actual or threatened violation of this provision. The attorney general shall have the sole authority to enforce the provisions of this section.
R.C. §1331.021