Chapter ii us copyright office library of congress subchapters a b chapter iii copyright royalty board library of congress subchapters a e chapter iv national institute of standards and technology department of commerce parts 400 502 599. Code of federal regulations title 37 patents trademarks and copyrights revised as of july 1 2013 office of the federal register u s 9780160919855 books . Code of federal regulations title 37 patents trademarks and copyrights revised as of july 1 1978 containing a codification of documents of general applicability and future effect as of july 1 1978 with ancillaries by united states office of the federal register. Title 37 of the electronic code of federal regulations title 37 of the electronic code of federal regulations toggle navigation ecfr. Title 37 is the principal set of rules and regulations issued by federal agencies of the united states regarding patents trademarks and copyrights it is available in digital and printed form and can be referenced online using the electronic code of federal regulations e cfr