Ancillary Jurisdiction

Ancillary jurisdiction allows a federal court to hear a claim that would normally be outside of its [wex:subject-matter jurisdiction] if it is substantially related to a second claim that is within the court's jurisdiction.  A claim comes within a federal court’s ancillary jurisdiction when it bears a logical relationship to the aggregate core of operative facts of the main claim, and the main claim meets the requirements of [wex:federal question jurisdiction] or [wex:diversity jurisdiction].