"“It’s a bombshell of a decision,” said Richard Gold, a law professor at Montreal’s McGill University who studies intellectual property. He’s a member of the university’s Centre For Intellectual Property Policy, which intervened in the case. “We’re now the only country in the developed world that when an inventor says, ‘my invention does X,’ it doesn’t actually have to do X.”
The Supreme Court ruled that a current standard, known as the “promise doctrine,” goes too far, because it allows for patents to be invalidated if an invention doesn’t do any of the things it promised."