Computer programs are functional, but they are also “literary works” that may be protected under copyright law. In December 2016, Arista Networks defended itself against a $335 million copyright infringement lawsuit from Cisco Systems. Cisco is now appealing the decision. Cisco Systems, the largest networking company in the world, is trying to prevent Arista Networks from building ethernet switches which partially rely on technology copied from Cisco. Now on appeal before Federal Court in California (9th Circuit), the legal question is whether aspects of the particular technology deserves copyright protection in the first place. Copyright protects creative expressions of an…