I had read about Canadian company i4i winning their suit against Microsoft and then today read Brad R.'s comment on it in Goodbye Microsoft. Yes, indeed, another reason to use Open Document Format, i.e. almost any non-Microsoft office program. This suit has hit Microsoft pretty heavily: they have had to stop selling the key product, Word, in their cash cow product, Office.
So we already know that Microsoft is a convicted monopolist. And it's not the most popular company in the world. And it's in the habit of using its patents to stop competitors. I have to wonder. Out there somewhere is there another company preparing to sue Microsoft for patent infringement? Yeah. tooth4tooth v. Microsoft.