In an absolutely hilarious turn of events, a Canadian DRM vendor is suing Sony over... AACS, the latest failed attempt to keep consumers from their media. The complaint? AACS violates Certicom patents.
We've reached some kind of tipping point when IP laws start implicating IP obfuscation protection schemes. It's also quite delightful to think that corporations that are absolutely paranoid about anyone else actually being able to use their media don't seem to mind infringing on other people's IP when it suits them.