Ohio Revised Code Title XXXI. Domestic Relations Children § 3107.064

(1) The mother was married at the time the minor was conceived or born;

(2) The parent placing the minor for adoption previously adopted the minor;

(3) Prior to the date a petition to adopt the minor is filed, a man has been determined to have a parent and child relationship with the minor by a court proceeding pursuant to sections 3111.01 to 3111.18 of the Revised Code, a court proceeding in another state, an administrative agency proceeding pursuant to sections 3111.38 to 3111.54 of the Revised Code, or an administrative agency proceeding in another state;

(4) The minor's father acknowledged paternity of the minor and that acknowledgment has become final pursuant to section 2151.232, 3111.25, or 3111.821 of the Revised Code;

(5) A public children services agency has permanent custody of the minor pursuant to Chapter 2151. or division (B) of section 5103.15 of the Revised Code after both parents lost or surrendered parental rights, privileges, and responsibilities over the minor.