521 U.S. 591 (1997) Cited 6,952 times 69 Legal Analyses
Holding that courts are "bound to enforce" Rule 23's certification requirements, even where it means decertifying a class after they had reached a settlement agreement and submitted it to the court for approval
568 U.S. 455 (2013) Cited 1,817 times 100 Legal Analyses
Holding that certain merits questions “should not be resolved in deciding whether to certify a proposed class,” but are “properly addressed at trial or in a ruling on a summary-judgment motion”
553 U.S. 639 (2008) Cited 1,104 times 7 Legal Analyses
Holding that bidders at a county tax-lien auction plausibly alleged RICO proximate causation when they lost to a competing bidder who lied to the county about complying with the auction's rules
516 U.S. 367 (1996) Cited 527 times 10 Legal Analyses
Holding that the Exchange Act's exclusive-jurisdiction provision sought "to achieve greater uniformity of construction and more effective and expert application of that law"
Holding that refusal to certify a class "on the sole ground that it would be unmanageable is disfavored and ‘should be the exception rather than the rule’ " (quoting In re S. Cent. States Bakery Prods. Antitrust Litig. , 86 F.R.D. 407, 423 (M.D. La. 1980) )
Holding that recipients of public assistance challenging delays by the Vermont Department of Social Welfare could proceed under the "inherently transitory" exception in part because "the Department will almost always be able to process a delayed application before a plaintiff can obtain relief through litigation"
Holding that the district court did not abuse its discretion in certifying the class but suggesting that prior to trial the district court “ensure that appropriate subclasses are identified”
Holding that where there were variations in state laws precluding a single class of doctors alleging breaches of contract by health maintenance organizations that systematically underpaid physicians for their services, subclasses could be certified covering class members applying the same legal standards
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"