Stony Stevenson writes with news that the head of the Open Invention Network has summarily dismissed Microsoft's claims that Linux violates a number of its patents. Calling the move 'clear FUD', Jerry Rosenthal calls them out by asking for Microsoft to disclose the patents they are worried about. His argument is that if the patents are something to be proud of, if the software giant feels they're sure to succeed in court, there's no need for behind-the-hand namecalling. "Rosenthal believes that, if there are grounds for patent infringement, there would either be easy workarounds or the open source community would find 'prior art' which would invalidate the patent. OIN buys patents on the open market and makes them available to companies royalty free, so long as those companies pledge never to use their own patents to attack open source code.The organisation was set up by IBM, NEC, Novell, Philips, Red Hat and Sony and has a war chest of millions of dollars."