Author of Linux Patent Study Says Ballmer Got It WrongThe claim by Microsoft earlier this week that open source infringes 235 patents, was false.
Steve Ballmer cited an independent report published last year that he said claimed that open source Linux violates 228 patents. The author, Dan Ravicher, of the
Public Patent Foundation said that the report "actually proves the opposite of what they claim it does," and that it did not claim that open source software faces legal problems.