The U.S. Supreme Court ruled Monday that a major antitrust lawsuit against Apple over its App Store can move forward. The 5-to-4 ruling immediately plunged Apple's stock prices and opened the door to the possibility of enormous future damages against the company.
Justice Brett Kavanaugh, appointed by President Trump last year, wrote the decision for himself and the court's four liberal justices. In it, he stressed that the court majority was taking no position on the merits of the lawsuit but said that under long-standing precedent the suit could proceed to its next stages.
The lawsuit was brought against Apple by four iPhone users, who claimed that Apple was monopolizing the retail market for the sale of apps and using that monopoly to force higher-than-competitive charges for its apps.
The theory of the lawsuit is that Apple's 30% commission charge to app developers is often passed on to consumers — creating a higher-than-competitive price — and that competitors are shut out because Apple prevents iPhone owners from buying apps anywhere other than its App Store.
Apple sought to block the lawsuit, asserting that it had not set the prices on the apps and thus the iPhone owners had no standing to sue.
But the 9th U.S. Circuit Court of Appeals ruled against Apple, and on Monday the Supreme Court agreed.
"Ever since Congress overwhelmingly passed and President Benjamin Harrison signed the Sherman Act in 1890, 'protecting consumers from monopoly prices' has been 'the central concern of antitrust,' " Kavanaugh wrote in the majority opinion.
He added, "The consumers here purchased apps directly from Apple, and they allege that Apple used its monopoly power over the retail apps market to charge higher-than-competitive prices."

