Everyone’s favorite beloved high-quality American brewer, Anheuser-Busch InBev S.A., a société anonyme legally organized under the laws of Belgium, recently tried to protect an unusual bit of intellectual property: the sound of a Budweiser can opening. “Wait, doesn’t that sound like any kind of can opening? How can that be a trademark?” If you’re asking these questions, congratulations, you’re a reasonable human being. So can A-B protect that sound as a trademark?