Principal Register

primary trademark register of the USPTO. When a mark has been registered on the Principal Register, the mark is entitled to all the rights provided by the Trademark Act. The advantages of owning a registration on the Principal Register include the following:

  • Constructive notice to the public of the registrant’s claim of ownership of the mark;
  • A legal presumption of the registrant’s ownership of the mark and the registrant’s exclusive right to use the mark nationwide on or in connection with the goods and/or services listed in the registration;
  • A date of constructive use of the mark as of the filing date of the application;
  • The ability to bring an action concerning the mark in federal court;
  • The ability to file the U.S. registration with the U.S. Customs Service to prevent importation of infringing foreign goods;
  • The registrant’s exclusive right to use a mark in commerce on or in connection with the goods or services covered by the registration can become “incontestable,” subject to certain statutory defenses; and
  • The use of the U.S. registration as a basis to obtain registration in foreign countries.