Supplemental Jurisdiction (Civ Pro) includes hearing related state-law claims as part of the same case.

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Supplemental jurisdiction allows a federal court to hear related state-law claims that are part of the same case or controversy. This means if a federal claim is before the court, the judge may include state-law claims that arise from the same facts and share a common nucleus of operative fact, so they’re not treated as separate lawsuits. It requires the state-law claims to be closely connected to the federal claim and part of the same overall dispute.

This isn’t about hearing unrelated state-law claims, which would require a separate filing in state court. It’s not about appeals, which are handled in appellate courts. And it doesn’t set remedies on its own; once jurisdiction exists, the court can adjudicate the state-law claims alongside the federal claim in one proceeding, subject to any limits or discretion the statute provides.