Earlier quoted context omitted.
um, that is not what that decision says. It says the interface may be covered by copyright to the extent that it contains expression. That would seem to me to have a large overlap with look and feel patents.
You are mistaken. It is saying that copyright applies to a user interface insofar as elements of it are subject to copyright on their own, but that "a user interface" is not itself expression, not itself subject to copyright. If you copied every last detail of my interface except the icons or other elements subject to copyright, I would have no valid claim that you infringed on my copyright. (NB:I am not saying this…
I'm not sure what is accepted case law, but the cited case seems much narrower to me than you are implying.