According to this article from Wired, Apple is involved in some very interesting copyright violation cases related to their fairplay copy protection scheme and DMCA takedown notices they provided to folks discussing how to circumvent Apple technologies.
I would pay attention to what the US Copyright Office decides based on their review – and on the results of the lawsuit itself. While I still strongly believe that US intellectual property right laws are able to handle new technologies… I’ve become a little concerned about how the courts have been reacting to various claims (as well as legislative moves like the DMCA).