However, a second round of litigation may inevitably result from a breach of settlement agreements. While a federal court may, according to the doctrine of the subsidiary court, remain competent to apply a concordat agreement,12 its decision to do so is discretionary.13 A federal court may therefore retain jurisdiction to the extent requested by the parties; 2) refuse the exercise of subsidiary jurisdiction as a whole or 3) change the scope of the subsidiary jurisdiction requested by the parties.13 Suppose that: the Tribunal decides to retain jurisdiction for the enforcement of the transaction. it must decide on the duration of this reservation of jurisdiction. The maximum length of time a court may retain ancillary jurisdiction to enforce a settlement agreement has not been definitively set by the courts14 A number of court decisions recognize that a longer period than the local Rule of 60 days of the District of New Jersey (Local R. A period of subsidiary power over a settlement agreement is most likely considered appropriate if it corresponds to the period during which the parties are required to comply with the terms of the settlement agreement. . . .