Index of code of federal regulations toggle navigation about us overview leadership resources and education. Index of code of federal regulations part 203. Chapter i united states patent and trademark office department of commerce subchapters a c 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 . Title 37 patents trademarks and copyrights title 37 patents trademarks and copyrights electronic code of federal regulations e cfr. The code of federal regulations title 37 contains the codified us federal laws and regulations that are in effect as of the date of the publication pertaining to patents trademarks copyrights and national standards