Columbus, OhioMediator, Arbitrator at Harold Paddock Co LPA Harold Paddock Co. LPA is a solo law practice devoted to mediation, arbitration, and litigation. Harold Paddock has years of experience as a retired court... Harold Paddock Co. LPA is a solo law practice devoted to mediation, arbitration, and litigation. Harold Paddock has years of experience as a retired court magistrate, a mediator, an arbitrator (either as a single arbitrator or as part of a panel), and a neutral hearing officer for various agencies...