Ohio Rev. Code § 3125.58: Court rules establishing time limits for support cases.

Each court with jurisdiction to issue court support orders or orders establishing the existence or nonexistence of a parent and child relationship shall establish rules of court to ensure that the following percentage of all actions to establish the existence or nonexistence of a parent and child relationship, to establish a support requirement, or to modify a previously issued court support order are completed within the following time limits:

(A) Seventy-five per cent of all of the actions shall be completed within six months after the date of initial filing;

(B) Ninety per cent of all of the actions shall be completed within twelve months after the date of initial filing.