The Supreme Court has sided with Rambus Inc., a developer of computer memory technology, in its long-standing antitrust fight with the Federal Trade Commission.

The justices, in an order Monday, are refusing to hear FTC's plea to reinstate the commission's ruling that Rambus, based in Los Altos, Calif., violated antitrust law.

A federal appeals court in Washington overturned the FTC ruling last year.

The Bush administration had declined to back the FTC in its appeal to the high court.