Copyright
Copyright Office Circulars and brochures series,
covering everything from "copyright basics" to copyright protect of "ideas, methods, and systems".
Copyright Office Compendium III,
outlining the internal practices and procedures of the Copyright Office (particularly helpful in understanding how registrations are processed).
Copyright Office Annual Reports
(dating back to 1866 to present)
Copyright Historical Documents Collection,
including older official reports of the Office, the Office's Mailing List archives, and the influential Copyright Revision Studies published by the Office in the years prior to the passage of the 1976 Copyright Act.
Patents
Search and read the full text of patents from around the world with Google Patents, and find prior art in our index of non-patent literature.
Inventors are encouraged to search the USPTO's patent database to see if a patent has already been filed or granted that is similar to your patent. Patents may be searched in the USPTO Patent Full-Text and Image Database (PatFT). The USPTO houses full text for patents issued from 1976 to the present and PDF images for all patents from 1790 to the present.
Trademark