Ohio Revised Code Title XIII. Commercial Transactions § 1310.21

(A) Words or conduct relevant to the creation of an express warranty and words or conduct tending to negate or limit a warranty shall be construed wherever reasonable as consistent with each other, but, subject to the provisions of section 1310.09 of the Revised Code on parol or extrinsic evidence, negation or limitation is inoperative to the extent that the construction is unreasonable.

(B) Subject to division (C) of this section, to exclude or modify the implied warranty of merchantability or any part of it, the language shall mention “merchantability,” be by a writing, and be conspicuous. Subject to division (C) of this section, to exclude or modify any implied warranty of fitness, the exclusion shall be by a writing and be conspicuous. Language to exclude all implied warranties of fitness is sufficient if it is in writing, is conspicuous, and states, for example, “there is no warranty that the goods will be fit for a particular purpose.”

(C) Notwithstanding division (B) of this section, but subject to division (D) of this section, all of the following apply:

(D) To exclude or modify a warranty against interference or against infringement as provided in section 1310.18 of the Revised Code, or any part of it, the language shall be specific, be by a writing, and be conspicuous, unless the circumstances, including course of performance, course of dealing, or usage of trade, give the lessee reason to know that the goods are being leased subject to a claim or interest of any person.