550 U.S. 544 (2007) Cited 266,542 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' "
Holding that a cognizable gender discrimination claim could be brought by a female domestic violence victim where the victim alleged police denied protection and made misogynistic comments including that "he did not blame [the victim's] husband for hitting her, because of the way she was 'carrying on'"
Holding class representatives had standing to challenge common marketing of cigarettes despite differences in the advertisements or statements on which class members relied
Holding that a complaint did not satisfy Rule 9(b) because it "d[id] not specify which plaintiff received which prospectus, or which plaintiff made purchases through the stockbroker defendants"
Fed. R. Civ. P. 15 Cited 90,505 times 91 Legal Analyses
Finding that, per N.Y. C.P.L.R. § 1024, New York law provides a more forgiving principle for relation back in the context of naming John Doe defendants described with particularity in the complaint
Fed. R. Civ. P. 23 Cited 34,923 times 1234 Legal Analyses
Holding that, to certify a class, the court must find that "questions of law or fact common to class members predominate over any questions affecting only individual members"