The big US case right now is the MPAA against RealNetworks
My understanding is that the ability to copy or rip a DVD for own use is a legal grey area. Actually stripping out the drm is supposedly illegal under the law as it now stands (a stupid law, in my view). But the RealNetworks software does *not* strip out the drm. This case is the anti-napster: RealNetworks is not being accused of facilitating the distribution of copyrighted material. They are being accused of giving the owners of DVDs a way to convert them into a more convenient form for their own use.
Nothing to add.