Ohio Rev. Code § 3109.043
In any proceeding pertaining to the allocation of parental rights and responsibilities for the care of a child, when requested in the complaint, answer, or counterclaim, or by motion served with the pleading, upon satisfactory proof by affidavit duly filed with the clerk of the court, the court, without oral hearing and for good cause shown, may make a temporary order regarding the allocation of parental rights and responsibilities for the care of the child while the action is pending.
If a parent and child relationship has not already been established pursuant to section 3111.02 of the Revised Code, the court may take into consideration when determining whether to award parenting time, visitation rights, or temporary custody to a putative father that the putative father is named on the birth record of the child, the child has the putative father's surname, or a clear pattern of a parent and child relationship between the child and the putative father exists.
R.C. § 3109.043