Cite as: 512 U. S. 477 (1994)
Opinion of the Court
that the conviction or sentence has been reversed on direct appeal, expunged by executive order, declared invalid by a state tribunal authorized to make such determination, or called into question by a federal court's issuance of a writ of habeas corpus, 28 U. S. C. § 2254. A claim for damages bearing that relationship to a conviction or sentence that has not been so invalidated is not cognizable under § 1983. Thus, when a state prisoner seeks damages in a § 1983 suit, the district court must consider whether a judgment in favor of the plaintiff would necessarily imply the invalidity of his conviction or sentence; if it would, the complaint must be dismissed unless the plaintiff can demonstrate that the conviction or sentence has already been invalidated. But if the district court determines that the plaintiff's action, even if successful, will not demonstrate the invalidity of any outstanding criminal judgment against the plaintiff, the action should be allowed to proceed,7 in the absence of some other bar to the suit.8
arresting officer, seeking damages for violation of his Fourth Amendment right to be free from unreasonable seizures. In order to prevail in this § 1983 action, he would have to negate an element of the offense of which he has been convicted. Regardless of the state law concerning res judicata, see n. 2, supra, the § 1983 action will not lie.
7 For example, a suit for damages attributable to an allegedly unreasonable search may lie even if the challenged search produced evidence that was introduced in a state criminal trial resulting in the § 1983 plaintiff's still-outstanding conviction. Because of doctrines like independent source and inevitable discovery, see Murray v. United States, 487 U. S. 533, 539 (1988), and especially harmless error, see Arizona v. Fulminante, 499 U. S. 279, 307-308 (1991), such a § 1983 action, even if successful, would not necessarily imply that the plaintiff's conviction was unlawful. In order to recover compensatory damages, however, the § 1983 plaintiff must prove not only that the search was unlawful, but that it caused him actual, compensable injury, see Memphis Community School Dist. v. Stachura, 477 U. S. 299, 308 (1986), which, we hold today, does not encompass the "injury" of being convicted and imprisoned (until his conviction has been overturned).
8 For example, if a state criminal defendant brings a federal civil-rights lawsuit during the pendency of his criminal trial, appeal, or state habeas action, abstention may be an appropriate response to the parallel
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