CFR > Title 37 - Patents, Trademarks, and Copyrights > CHAPTER I—UNITED STATES PATENT AND TRADEMARK OFFICE, DEPARTMENT OF COMMERCE > SUBCHAPTER A—GENERAL (parts 1 to 5) > PART 1—RULES OF PRACTICE IN PATENT CASES > SUBPART C—International Processing Provisions (§1.401 to §1.499) > 1.414—The United States Patent and Trademark Office as a Designated Office or Elected Office.

1.414—The United States Patent and Trademark Office as a Designated Office or Elected Office.

(a) The United States Patent and Trademark Office will act as a Designated Office or Elected Office for international applications in which the United States of America has been designated or elected as a State in which patent protection is desired.
(b) The United States Patent and Trademark Office, when acting as a Designated Office or Elected Office during international processing will be identified by the full title “United States Designated Office” or by the abbreviation “DO/US” or by the full title “United States Elected Office” or by the abbreviation “EO/US”.
(c) The major functions of the United States Designated Office or Elected Office in respect to international applications in which the United States of America has been designated or elected, include:
(1) Receiving various notifications throughout the international stage and
(2) Accepting for national stage examination international applications which satisfy the requirements of 35 U.S.C. 371.

Code of Federal Regulations

[52 FR 20047, May 28, 1987]