Ohio Rev. Code § 3109.71: Notice of termination.

When a caretaker authorization affidavit terminates pursuant to division (A), (B), (C), or (D) of section 3109.70 of the Revised Code, the grandparent shall notify, in writing, the school district in which the child attends school, the child's health care providers, the child's health insurance coverage provider, the court in which the affidavit was filed under section 3109.74 of the Revised Code, and any other person or entity that has an ongoing relationship with the child or grandparent such that the person or entity would reasonably rely on the affidavit unless notified of the termination. The grandparent shall make the notifications not later than one week after the date the affidavit terminates.