This week, the Supreme Court has upheld a judgment against Microsoft for $290 million for patent infringement stemming from a 2007 lawsuit. Microsoft was sued by a company called i4i for using a patented editing tool in Microsoft Word 2003 and 2007 without first gaining the permission of i4i. Microsoft’s only argument was that the patent was “invalid”, also telling the court that the standard for proving invalidity should be less rigorous than standards used by the lower courts. Microsoft lost the appeal by an 8-0 vote, as Justice Sonia Sotomayor wrote that the law clearly states that once a patent has been granted, it is presumed valid. John Roberts, who is the Chief Justice of the nation’s highest court, did not participate in the case, as he owns more than $100,000 in Microsoft stock. Microsoft has yet to pay the damages, which are expected to be over $300 million when interest is added.