NYU law professor Christopher Sprigman tweeted that he believes Left Shark is not copyrightable because it qualifies as a “useful article,”
Useful for what? It's silly for Katy Perry's lawyers to waste everyone's time on this, but that is presumably why they are paid a fat retainer, and the shark thingy looks eminently copyrightable to me, notwithstanding my complete lack of interest in Katy Perry, her music, or her stage show.