U.S. Supreme Court: Federal Court Could Not Enjoin State Court from Addressing Class Certification Issue

Morgan Lewis
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In a decision with implications for companies facing class action litigation, the U.S. Supreme Court ruled unanimously that a federal district court, having rejected certification of a proposed class action, could not take the additional step of enjoining a state court from addressing a motion to certify the same class under state law. In an opinion authored by Justice Kagan, the Court in Smith v. Bayer Corp., No. 09-1205, 564 U.S. ____ (June 16, 2011), held that principles of stare decisis and comity should have governed whether the federal court’s ruling had a controlling or persuasive effect in the later case, and the state court should have had an opportunity to determine the precedential effect (if any) of the federal court ruling.

Facts of Bayer

In Bayer, a plaintiff sued in West Virginia state court alleging that Bayer’s pharmaceutical drug Baycol was defective. After removal to federal court, the plaintiff moved to certify the action as a class action on behalf of all West Virginia purchasers of Baycol. The federal court rejected class certification because proof of injury from Baycol would have required plaintiff-specific inquiries and therefore individual issues of fact predominated over common issues. It then dismissed the plaintiff’s claims on independent grounds.

A different plaintiff, who had been a putative class member in the first action and was represented by the same class counsel in the federal action, moved to certify the same class in West Virginia state court. Bayer sought an injunction from the federal court in the first case, arguing that the court’s rejection of the class bid should bar the plaintiff’s relitigation of the same class certification question in state court. The district court granted the injunction, and the Circuit Court affirmed.

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