Haaaaannnnnggg on guys....
All they did was patent that. They haven't put any of the patents in place, and I doubt they will. It's entirely possible they patented anti-used-game drm so companies like Microsoft couldn't use them. People really enjoy jumping the gun.
On the topic of /buying/ used games: I believe the entire "Licensing" thing they have going with games is complete bullstuff. When you buy a game, you agree to /no/ legally binding contract, and it is /your/ property. I have no issue with used game sales, but I think developers do deserve to at least make some money on these sales, and hence I've always been a large proponent of the "one-multiplayer-account-per-game" idea. I think people should have a right to the game offline, but when it comes to playing online, on either p2p networks, or company servers, everyone should have to pay their share.