In the U.S. Supreme Court’s ruling Monday on pay-for-delay settlements in the pharmaceutical industry – in which a brand-name drugmaker pays generic rivals to drop challenges to its patent, thus assuring its monopoly – five justices agreed with the Federal Trade Commission that the key question isn’t whether pay-for-delay deals exceed the scope of the brand-maker’s patent. Courts cannot simply rubber-stamp such settlements as presumptively legal, the majority said in FTC v. Actavis. But nor can they assume that pay-for-delay settlements are illegal by their very nature. Instead, according to the majority, trial courts must conduct a “rule of reason” analysis to determine whether reverse-payment settlements violate antitrust law.