Today’s decision by the Supreme Court in Microsoft Corp. v. Baker puts an end to a tactic used by plaintiffs in the Ninth Circuit to manufacture an immediate appeal of an order denying class certification. When a federal district court grants or denies class certification, Federal Rule of Civil Procedure 23(f) allows the losing party to ask the court of appeals for permission to appeal immediately. Otherwise, the parties must litigate the case to a final judgment—the named plaintiffs’ individual claims if certification has been denied, or the class claims if certification has been granted—to obtain appellate review of the district court’s class certification determination. But the Ninth Circuit created an exception to this rule by authorizing a plaintiff who has had class certification denied to dismiss his or her individual claims with prejudice and then file an appeal from that self-generated judgment.
After the oral arguments in Baker, it seemed likely that the Supreme Court would reject that exception. And that is exactly what the Court decided today. Much more interesting is how they got there: Although all eight participating Justices agreed on the outcome, they took different approaches to the question presented.