Supplemental Jurisdiction

Crushendo defines this key bar prep and civil procedure term.

What does supplemental jurisdiction mean?

supplemental jurisdiction – Subject matter jurisdiction over claims, counterclaims, and crossclaims that cannot independently invoke jurisdiction but can piggy-back on related claims because they’re “so related” to an original-jurisdiction-invoking claim that they arise from a “common nucleus of operative fact,” like claims involving the same event or state claims that almost mirror federal claims.

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