"Glyn Moody has written a post about a system called U-Prove. Glyn notes that the software is being licensed under a BSD licence and notes that is a good thing, but then observes that there is a patent encumbrance on the code, and indicates this is a bad thing. In a comment, Sam Ramji refers off to this article of mine, kindly remarking it is a ‘good post’.
"The essence of Glyn’s argument is that the OSP does not preserve the freedom of free software, so it is not sufficient. Sam appears to be adopting my comments to the effect that it’s hard to single out one company for the patent blame game."