Lessig has argued cases on the subject before the Supreme Court.

Interestingly he was a clerk for Supreme Court Justice Antonin "Fat Tony" Scalia before assuming a professorship in California.

I know this is more than you want to know.

But what the 3 books comprise is the discussion of the
three layers of information which the advent of the internet
has created and for which most previous case law does not
account. There is the Code Layer, the Bandwidth layer--
which is the transfer medium and the Content layer.

Free Culture is about the content layer.