Companies sometimes want to abandon an old identity and rebrand with a new one. Trademark law probably does not have much to say about rebranding in itself. But we should be careful about how we think about rebranding and other undisclosed source relationships because, if not handled properly,...

Federal law presumes that false advertising harms competition. Federal law also presumes that false advertising is harmless or even helpful to competition. Contradiction is not unknown to the law, of course. This contradiction, though, is acute. For not only are both regimes at issue designed to...