Ohio Rev. Code § 2107.08
During the lifetime of a testator, the testator's will, deposited according to section 2107.07 of the Revised Code, shall be delivered only to the testator, to some person authorized by the testator by a written order, or to a probate court for a determination of its validity when the testator so requests. After the testator's death, the will shall be delivered to the person named in the indorsement on the envelope of the will, if there is a person named who demands it. If the testator has filed a complaint in the probate court for a judgment declaring the validity of the will pursuant to section 5817.02 of the Revised Code and a judgment is rendered pursuant to division (A)(1) of section 5817.10 of the Revised Code declaring the will valid, the judge of the court who rendered the judgment shall deliver the will to the proper probate court as determined under section 2107.11 of the Revised Code, upon the death of the testator, for probate.
If no person named in the indorsement demands the will and it is not one that has been declared valid pursuant to division (A)(1) of section 5817.10 of the Revised Code, it shall be publicly opened in the probate court within one month after notice of the testator's death and retained in the office of the probate judge until offered for probate. If the jurisdiction belongs to any other probate court, the will shall be delivered to the person entitled to its custody, to be presented for probate in the other court. If the probate judge who opens the will has jurisdiction of it, the probate judge immediately shall give notice of its existence to the executor named in the will or, if any, to the persons holding a power to nominate an executor as described in section 2107.65 of the Revised Code, or, if it is the case, to the executor named in the will and to the persons holding a power to nominate a coexecutor as described in that section. If no executor is named and no persons hold a power to nominate an executor as described in that section, the probate judge shall give notice to other persons immediately interested.
R.C. § 2107.08