Ohio Rev. Code § 5817.02: Action by testator.

(A) A testator may file a complaint with the probate court to determine before the testator's death that the testator's will is a valid will subject only to subsequent revocation or modification of the will. The right to file a complaint for a determination of the validity of a testator's will under this chapter, or to voluntarily dismiss a complaint once filed, is personal to the testator and may not be exercised by the testator's guardian or an agent under the testator's power of attorney.

(B) A testator who desires to obtain a validity determination as to the testator's will shall file a complaint to determine the validity of both the will and any related trust.

(C) The failure of a testator to file a complaint for a judgment declaring the validity of a will shall not be construed as evidence or an admission that the will is not valid.

(D) A complaint for a determination of the validity of a testator's will shall be accompanied by an express written waiver of the testator's physician-patient privilege provided in division (B) of section 2317.02 of the Revised Code.