The United States Patent & Trademark Office (USPTO) – For information on U.S. Patents & Trademarks.
Library of Congress – United States Copyright Office – For information on U.S. Copyrights and Copyright Law in general.
The European Patent Office (EPO) – For information on applications filed under the EPC.
World Intellectual Property Organization (WIPO)
Japanese Patent Office (JPO) – For information on Japanese Patents and Trademarks.
U.S. Customs and Border Protection – For information on recording registered U.S. copyrights and/or trademarks to assist the U.S. Customs in their efforts to prevent the importation of infringing products.
U.S. International Trade Commission – For information on Section 337 investigations by the Commission concerning, inter alia, importation of goods infringing registered U.S. Patents and/or Trademarks.