The Commonwealth Court is a court of Statewide jurisdiction. Therefore, for purposes of Pa.R.C.P. No. 400(d), an action commenced in this Court is deemed commenced in all counties of this Commonwealth. Accordingly, where service is to be effectuated within this Commonwealth by a sheriff, the sheriff of any county where service may be made is authorized to serve process issuing from this Court and does not need to be deputized.
210 Pa. Code § 69.341