C.F.R. » Title 37 » CHAPTER I—UNITED STATES PATENT AND TRADEMARK OFFICE, DEPARTMENT OF COMMERCE › SUBCHAPTER A—GENERAL › PART 1—RULES OF PRACTICE IN PATENT CASES › Subpart A—General Provisions

37 C.F.R. § 1.1

Addresses for non-trademark correspondence with the United States Patent and Trademark Office

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(a) In general. Except for correspondence submitted via the U.S. Patent and Trademark Office (USPTO) patent electronic filing system in accordance with § 1.6(a)(4), all correspondence intended for the USPTO must be addressed to either “Director of the United States Patent and Trademark Office, P.O. Box 1450, Alexandria, Virginia 22313-1450” or to specific areas within the Office as provided in this section. When appropriate, correspondence should also be marked for the attention of a particular office or individual.

(1) Patent correspondence—(i) In general. All correspondence concerning patent matters processed by organizations reporting to the Commissioner for Patents should be addressed to: Commissioner for Patents, PO Box 1450, Alexandria, Virginia 22313-1450.

(ii) Patent Trial and Appeal Board. See § 41.10 or § 42.6 of this title. Notices of appeal, appeal briefs, reply briefs, requests for oral hearing, as well as all other correspondence in an application or a patent involved in an appeal to the Board for which an address is not otherwise specified, should be addressed as set out in paragraph (a)(1)(i) of this section.

(2) [Reserved]

(3) Office of General Counsel correspondence—(i) Litigation and service. Correspondence relating to pending litigation or otherwise within the scope of part 104 of this title shall be addressed as provided in § 104.2.

(ii) Disciplinary proceedings. Correspondence to counsel for the Director of the Office of Enrollment and Discipline relating to disciplinary proceedings pending before a Hearing Officer or the Director shall be mailed to: Mail Stop 8, Office of the Solicitor, United States Patent and Trademark Office, P.O. Box 1450, Alexandria, Virginia 22313-1450.

(iii) Solicitor, in general. Correspondence to the Office of the Solicitor not otherwise provided for shall be addressed to: Mail Stop 8, Office of the Solicitor, United States Patent and Trademark Office, P.O. Box 1450, Alexandria, Virginia 22313-1450.

(iv) General Counsel. Correspondence to the Office of the General Counsel not otherwise provided for, including correspondence to the General Counsel relating to disciplinary proceedings, shall be addressed to: General Counsel, United States Patent and Trademark Office, PO Box 1450, Alexandria, Virginia 22313-1450.

(v) Improper correspondence. Correspondence improperly addressed to a Post Office Box specified in paragraphs (a)(3)(i) and(a)(3)(ii) of this section will not be filed elsewhere in the United States Patent and Trademark Office, and may be returned.

(4) Office of Public Records correspondence. (i) Assignments. All patent-related documents submitted by mail to be recorded by Assignment Services Division, except for documents filed together with a new application, should be addressed to: Mail Stop Assignment Recordation Services, Director of the United States Patent and Trademark Office, P.O. Box 1450, Alexandria, Virginia 22313-1450. See § 3.27.

(5) Office of Enrollment and Discipline correspondence. All correspondence directed to the Office of Enrollment and Discipline concerning enrollment, registration, and investigation matters should be addressed to Mail Stop OED, Director of the United States Patent and Trademark Office, P.O. Box 1450, Alexandria, Virginia 22313-1450.

(ii) Documents. All requests for certified or uncertified copies of patent documents should be addressed to: Mail Stop Document Services, Director of the United States Patent and Trademark Office, P.O. Box 1450, Alexandria, Virginia 22313-1450.

(b) Patent Cooperation Treaty. Letters and other communications relating to international applications during the international stage and prior to the assignment of a national serial number should be additionally marked “Mail Stop PCT.”

(c) For reexamination or supplemental examination proceedings. (1) All correspondence concerning ex parte reexamination, other than correspondence to the Office of the General Counsel pursuant to § 1.1(a)(3) and § 102.4 of this chapter, should be additionally marked “Mail Stop Ex Parte Reexam.”

(2) All correspondence concerning inter partes reexamination, other than correspondence to the Office of the General Counsel pursuant to § 1.1(a)(3) and § 102.4 of this chapter, should be additionally marked “Mail Stop Inter Partes Reexam.”

(3) Requests for supplemental examination (original and corrected request papers) and any other paper filed in a supplemental examination proceeding, should be additionally marked “Mail Stop Supplemental Examination.”

(4) All correspondence concerning a reexamination proceeding ordered as a result of a supplemental reexamination proceeding, other than correspondence to the Office of the General Counsel pursuant to § 1.1(a)(3) and § 102.4 of this chapter should be additionally marked “Mail Stop Ex Parte Reexam.”

(d) Payments of patent maintenance fees. Payments of patent maintenance fees that are not submitted electronically and correspondence related to maintenance fees may be addressed to: Mail Stop Maintenance Fee, Director of the United States Patent and Trademark Office, P.O. Box 1450, Alexandria, Virginia 22313-1450.

(e) Patent term extension. All applications for extension of patent term under 35 U.S.C. 156 and any communications relating thereto intended for the United States Patent and Trademark Office should be additionally marked “Mail Stop Hatch-Waxman PTE.” When appropriate, the communication should also be marked to the attention of a particular individual, as where a decision has been rendered.

(f) [Reserved]

[68 FR 14335, Mar. 25, 2003; 68 FR 19371, Apr. 21, 2003, as amended at 68 FR 48287, Aug. 13, 2003; 68 FR 71006, Dec. 22, 2003; 69 FR 29877, May 26, 2004; 69 FR 35451, June 24, 2004; 69 FR 49997, Aug. 12, 2004; 72 FR 18904, Apr. 16, 2007; 73 FR 47540, Aug. 14, 2008; 75 FR 36295, June 25, 2010; 77 FR 46624, Aug. 6, 2012; 77 FR 48811, Aug. 14, 2012; 78 FR 62393, Oct. 21, 2013; 86 FR 35230, July 2, 2021; 87 FR 68904, Nov. 17, 2022]
Notes of Decisions
Cited in 10 cases (3 in the last 5 years), 1976–2025 · leading case: Edouard Legille v. C. Marshall Dann, Commissioner of Patents
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Edouard Legille v. C. Marshall Dann, Commissioner of Patents (1976) cadc “” See 37 C.F.R. § 1.1 (1975). . See note 47 infra and accompanying text.”
University of West Virginia Board of Trustees v. VanVoorhies (2000) wvnd “In support of his claim, defendant cites as authority, “the terms of the Patent Act, Title 35 of the United States Code, the Rules of Practice in Patent Cases, 37 C.F.R. §§ 1.1 — 1.809, and the Manual of Patent Examining Procedure” and “35 U.”
CTS Corp. v. Electro Materials Corp. of America (1979) nysd “Despite the Patent Office rule that all business must be transacted in writing, 37 C.F.R. § 1.1 ; see 37 C.F.R. § 1.133 , the file history of the Faber patent contains no reference to this *815 meeting nor any mention of the Battelle report or the Herold patent.”
Securities & Exchange Commission v. Wencke (1978) ca9 “(See 37 C.F.R. §§ 1.1 et seq. (1977).) Patent applicants whose claims-are rejected may obtain internal reexamination and reconsideration by the Patent Office (id.”
Hyatt v. Matal (2018) dcd “The PTO’s rule implementing this legislation is in 37 C.F.R. § 1.1'29 (“Rule 129”), which was promulgated on April 25, 1995.”
Satchell v. United States (2022) uscfc “§ 252 ; 37 C.F.R. § 1.1 78(a) (201 3). 3 For clarity, the four identified patents will be hereinafter collectively refened to as the "VendoNet patents.”
Hessing-Roper v. Commissioner for Patents (2025) dcd “See 37 C.F.R. § 1.1 . The events underlying the discrimination claims also occurred in the Patent Office’s office in Virginia.”
Hessing-Roper v. Commissioner for Patents (2025) vaed “See 37 C.F.R. § 1.1 . The events underlying the discrimination claims also occurred in the Patent Office’s office in Virginia.”
In re Amendments to the Rules Regulating the Florida Bar—Subchapters 6-25 & 6-26 (2006) fla “§§ 1-376 , as amended; the Rules of Practice in Patent Cases, 37 C.F.R. §§ 1.1 — 1.997, as amended; the American Inventors Protection Act of 1999, United States Patent and Trademark Office (USPTO) rules of practice, the Manual of Patent Examining Procedure (MPEP), the Patent…”
Digital Equipment Corp. v. Parker (1980) mad “Those regulations are found at 37 CFR §§ 1.1 et seq. (1979). The subject of plaintiff’s attack is the Commissioner’s decision to “strike” a reissue application pursuant to a USPTO regulation, USPTO Rule 56, 37 CFR § 1.”
Annotations are extracted automatically from the opinions in the Syfert caselaw corpus and ranked by authority, recency, and treatment. Dots show Syfertize treatment of the citing case itself.