Since the vast majority of civil cases end in settlement, litigants must remain mindful of ensuring judicial enforcement of a settlement agreement.
If you thought all that was necessary to provide for continuing judicial supervision is a clause in your settlement agreement or stipulation of dismissal stating that the federal court shall retain jurisdiction to enforce its provisions, please think again. As District Judge Noel L. Hillman recently emphasized in Brass Smith, LLC v. RPI Industries, Inc., federal courts are courts of limited jurisdiction and jurisdiction cannot be created by the private agreement of the parties. Nor do district courts have “inherent power” to enforce settlements. Unless you have taken the proper steps or there is an independent basis for jurisdiction (such as diversity of citizenship or a federal question), you will probably be obliged to bring a new action in state court to enforce your settlement agreement.
Notwithstanding its limited jurisdiction, a federal court may retain jurisdiction to enforce a settlement agreement under the doctrine of ancillary jurisdiction. To give rise to such jurisdiction, the parties’ obligation to comply with the settlement agreement must expressly be made part of the order of dismissal, either by a separate provision ‘retaining jurisdiction’ over the settlement agreement or by expressly incorporating the terms of the settlement agreement in the order of dismissal.

