Originality in copying?

This LA Times story about a lawsuit between an antique store and Restoration Hardware seems like it's going to be hard for the antique store to win--to the extent that the complaint is that Restoration didn't do its own research to find old designs to copy, but rather bought the designs from the antique store that had carefully curated them, that seems to have a significant Dastar problem, not to mention fatal questions of materiality on the false advertising side.  Restoration seems to have overreacted itself with a counterclaim for defamation, though.