Ohio Rev. Code § 5309.94: Serving and waiver of notices.

All notices required under sections 5309.02 to 5310.21, inclusive, of the Revised Code, shall be served in the same manner as required by law for service of summons or like notices.

In any suit or proceeding for registering land, or any interest therein, or lien thereon, or in relation to registered land, or any interest in, or lien or charge on such registered land, parties may waive notice and enter appearance as in civil actions and in all such cases service of notice may be dispensed with.