Microsoft Wins Xbox Class-Action Fight at U.S. Supreme Court

Companies won a new procedural tool in class-action litigation as the U.S. Supreme Court sided with Microsoft Corp. in a lawsuit centering on its Xbox consoles.

The justices unanimously said the consumers who sued Microsoft didn’t have a right to immediately appeal after a trial judge rejected their bid to press the case as a class action. The suit claims the Xbox console has a flaw that causes discs to be scratched during normal use.

The general rule in federal court is that litigants can’t appeal until a trial judge has reached a final decision. In the Xbox case, five ...