Holding the district court abused its discretion by relaxing and shifting plaintiff's burden of proving actual conformity with the requirements of Rule 23
In Urethane, the district court held that the downstream data requested by the defendants bore directly on the class-certification questions of whether common questions of law or fact were predominant and whether the class representatives' claims were typical of the class.
Fed. R. Civ. P. 23 Cited 34,858 times 1232 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"