Ohio Rev. Code § 5802.03 (2026)

(A) Except as otherwise provided in division (B) of this section, the probate division of the court of common pleas has concurrent jurisdiction with, and the same powers at law and in equity as, the general division of the court of common pleas to issue writs and orders and to hear and determine any action that involves an inter vivos trust.

(B) The probate division of the court of common pleas has exclusive jurisdiction to render declaratory judgments under Chapter 5817. of the Revised Code. However, the probate division of the court of common pleas may transfer a declaratory judgment proceeding under that chapter to the general division of the court of common pleas pursuant to division (A) of section 5817.04 of the Revised Code.