Julie188 writes "In the ongoing patent infringement case between i4i and Microsoft, i4i has won a powerful ally: the US government itself. The US solicitor general, which represents the federal government in the Supreme Court, on Friday filed an amicus brief in support of i4i, saying that the US Patent and Trademark Office should not be second-guessed by a jury. i4i, which won a $290 million patent judgment against Microsoft, has now accrued 22 amicus briefs in its corner, representing more than 100 companies, organizations and individuals, including venture capitalists, individuals from the military and now, the government. Meanwhile, Microsoft has so far lined up 20 amicus briefs, representing about 60 companies and individuals, including Google, Apple, Cisco, Intel, Red Hat, the Electronic Frontier Foundation and 37 law and economics professors. At issue is how much evidence is required to invalidate a patent."