What is ANCILLARY JURISDICTION? Definition of ANCILLARY JURISDICTION in Black's Law Dictionary
"Ancillary jurisdiction" of federal court generally involves either proceedings which are concerned with pleadings, processes, records or judgments of court in principal case or proceedings which affect property already in court's custody. Cooperative Transit Co. v. West Penn Electric Co., C.C.A.W.Va., 132 F.2d 720, 723. The ancillary process must be to aid, enjoin, or regulate original suit and prevent relitigation in other courts of issues heard and adjudged in such suit. O'Brien v. Richtarsic, D.C. N.Y., 2 F.R.D. 42, 44.