Also known as: actual controversies · case or controversy
Written by attorneys · grounded in primary & secondary sources — see below
A dispute that presents a concrete conflict between adverse parties with adverse legal interests. The dispute must be real and immediate rather than hypothetical or abstract so that a federal court may exercise jurisdiction under Article III.
Spotlight Stage sues Horizon Arts Foundation in federal court for copyright infringement arising from copied staging and scripts. Spotlight adds a state unfair competition claim based on the same copied materials used to win sponsorships. The federal court may hear the state claim because both claims arise from the identical appropriation and therefore form one actual controversy.
Horizon Land sues Valley Rural in federal court under a federal seed-labeling statute. Horizon also asserts state nuisance and crop-damage claims against Apex Livestock and Urban Crop arising from the identical seeds and cross-pollination. The district court possesses supplemental jurisdiction because the state claims share the same operative facts and therefore constitute part of the same actual controversy.
Select any source to read its text and confirm it supports the definition.
Red Community petitions for a declaratory judgment invalidating a municipal ordinance banning evening door-to-door solicitations. The city has never enforced the ordinance and routinely approves evening fundraising walks. Because no realistic threat of enforcement exists, the petition presents no actual controversy and the court lacks jurisdiction.
A challenge lacks an actual controversy when the statute has never been enforced, no realistic threat of enforcement exists, and the dispute remains purely hypothetical. Federal courts refuse to issue advisory opinions on such dormant laws.
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Once a district court has original jurisdiction, it may exercise supplemental jurisdiction over additional claims that form part of the same case or controversy under Article III. The claims must share a common nucleus of operative fact with the anchor claim.
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A federal court may issue a declaratory judgment only in a case of actual controversy within its jurisdiction. The plaintiff must present a real dispute between parties with adverse legal interests rather than a speculative or abstract question.
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No. A plaintiff must show a concrete and particularized injury in fact. A purely procedural violation that produces no actual or threatened harm fails to satisfy the actual controversy requirement for Article III jurisdiction.
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