Ohio Revised Code Title XXXI. Domestic Relations Children § 3107.16

(A) Appeals from the probate court are subject to the Rules of Appellate Procedure and, to the extent not in conflict with those rules, Chapter 2505. of the Revised Code. Unless there is good cause for delay, appeals shall be heard on an expedited basis.

(B) Subject to the disposition of an appeal, upon the expiration of six months after an adoption decree is issued, the decree cannot be questioned by any person, including the petitioner, in any manner or upon any ground, including fraud, misrepresentation, failure to give any required notice, or lack of jurisdiction of the parties or of the subject matter, unless, in the case of the adoption of a minor, the petitioner has not taken custody of the minor, or, in the case of the adoption of a minor by a stepparent, the adoption would not have been granted but for fraud perpetrated by the petitioner or the petitioner's spouse, or, in the case of the adoption of an adult, the adult had no knowledge of the decree within the six-month period.