Ohio Revised Code Title XXIII. Courts Common Pleas § 2307.73

(A) A manufacturer is subject to liability for compensatory damages based on a product liability claim only if the claimant establishes, by a preponderance of the evidence, all of the following:

(B) If a claimant is unable because the manufacturer's product in question was destroyed to establish by direct evidence that the manufacturer's product in question was defective or if a claimant otherwise is unable to establish by direct evidence that the manufacturer's product in question was defective, then, consistent with the Rules of Evidence, it shall be sufficient for the claimant to present circumstantial or other competent evidence that establishes, by a preponderance of the evidence, that the manufacturer's product in question was defective in any one of the four respects specified in division (A)(1) of this section.

(C) Proof that a manufacturer designed, formulated, produced, constructed, created, assembled, or rebuilt the type of product in question is not proof that the manufacturer designed, formulated, produced, constructed, created, assembled, or rebuilt the actual defective product in the product liability claim. A manufacturer may not be held liable in a product liability action based on market share, enterprise, or industrywide liability.