An anonymous reader writes: The Supreme Court ruled today (PDF) that Cisco Systems can’t skip out of a patent suit against them from patent troll Commil USA. The case reached the Supreme Court because Cisco argued it had a “good faith belief” that the patent they were infringing was invalid. The justices voted 6-2 that such a belief didn’t matter if they were indeed infringing. The Supreme Court’s opinion is that a company must know of the patent it’s infringing, and that their product infringes upon the patent — which, at least, is more than what Commil was pushing. The case isn’t completely over — a $63.7 million verdict in Commil’s favor was overturned by an Appeals Court, and now the Supreme Court has sent it back down for re-evaluation after it clarified the rules of infringement. The Appeals Court could still overturn the judgment for some other reason. The good news is that the Supreme Court dedicated a page in their opinion to telling lower courts how to sanction patent trolls and keep them from clogging the courts with ridiculous claims. “[I]t is still necessary and proper to stress that district courts have the authority and responsibility to ensure frivolous cases are dissuaded.”
Read more of this story at Slashdot.