There are lots of risks in the restaurant business: bad food, unruly patrons, defective furniture. Fortunately, copying a recipe claimed by someone else is not one of them. Judges regularly close the courthouse doors on such claims, which, as a result, are few and far between. Until, that is, 3-D printing came along. Now, as surely as “au chocolat” follows “éclair,” a 3-D printed confection is going to attract some unwanted attention, including, perhaps, a copyright infringement claim. Let us explain.