Ohio Rev. Code Ann. § 5722.01
As used in this chapter:
(F) "Nonproductive land" means any parcel of delinquent vacant land with respect to which a foreclosure and forfeiture proceeding pursuant to section 5721.14 of the Revised Code has been instituted; and any parcel of delinquent land with respect to which a foreclosure proceeding pursuant to section 323.25, sections 323.65 to 323.79, or division (A) or (B) of section 5721.18 of the Revised Code has been instituted and to which one of the following criteria applies: