It would be unnecessary to repeat yesterday's discussion about patent risk in OOXML. You can follow the links to find out more. What's new is the following:

What Microsoft intends to do with its OSP is to forbid sublicensability, which is one of the cornerstone for distributing GPL code. The OSP page on Microsoft website is pretty clear about it: "There is no need for sublicensing".

It was only a couple of days ago that we mentioned a different type of 'GPL poison', which appears to have become somewhat of a strategic tool. Novell helps Microsoft a lot in that respect. It is used as a GPL proxy that spreads some of this 'poison' and helps Microsoft pass the acid (legal) test, e.g. in Europe [1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11]. ⬆