550 U.S. 544 (2007) Cited 266,697 times 365 Legal Analyses
Holding that a complaint's allegations should "contain sufficient factual matter, accepted as true, to 'state a claim to relief that is plausible on its face' "
555 U.S. 223 (2009) Cited 22,510 times 8 Legal Analyses
Holding that a court may, without deciding whether there was a constitutional violation, look to the question of whether that right was "clearly established"
457 U.S. 800 (1982) Cited 31,499 times 11 Legal Analyses
Holding that public officials are entitled to a "qualified immunity" from "liability for civil damages insofar as their conduct does not violate clearly established . . . rights of which a reasonable person would have known"
441 U.S. 520 (1979) Cited 17,408 times 10 Legal Analyses
Holding that a "prohibition against receipt of hardback books unless mailed directly from publishers, book clubs, or bookstores does not violate the First Amendment rights of MCC inmates"
420 U.S. 103 (1975) Cited 4,607 times 13 Legal Analyses
Holding that the Fourth Amendment requires a judicial determination of probable cause as a prerequisite to any extended restraint on liberty following an arrest
449 U.S. 361 (1981) Cited 1,118 times 1 Legal Analyses
Holding that "[c]ases involving Sixth Amendment deprivations are subject to the general rule that remedies should be tailored to the injury suffered from the constitutional violation"
Holding that "the Defendants have waived [their qualified immunity] claim by failing to raise the matter in their Rule 50 motion prior to the district court's submission of the case to the jury"
Holding that this Court may entertain an interlocutory appeal of a denial of qualified immunity "[o]nly to the extent that a summary judgment order denies qualified immunity based on a pure issue of law"