We sort of expected this to happen after the appeals court for the Federal Circuit (CAFC) held its oral arguments back in December, but CAFC has now spit at basic common sense and has declared that you can copyright an API. As we noted, back when Judge William Alsup (who learned to code Java to better understand the issues in the case) ruled that APIs were not subject to copyright protection, his ruling was somewhat unique in that it was clearly directed as much at an appeals court panel who would be hearing the appeal as it was at the parties. Alsup rightly suspected that the judges on the appeal wouldn’t actually understand the issues as well as he did, and tried to break it down clearly for them. Unfortunately, the three judge CAFC panel did not pay attention.