37 CFR 1.821 — Nucleotide and/or amino acid sequence disclosures in patent applications

37 CFR 1.821 — Nucleotide and/or amino acid sequence disclosures in patent applications.

[Editor Note: This rule is applicable to applications containing a nucleotide and/or amino acid sequence filed prior to July 1, 2022. See §§ 1.831 through 1.835 for rules applicable on or after July 1, 2022.]

(1) Nucleotides. Nucleotides are intended to embrace only those nucleotides that can be represented using the symbols set forth in Appendix A to this subpart. Modifications ( e.g., methylated bases) may be described as set forth in Appendix B to this subpart but shall not be shown explicitly in the nucleotide sequence.

(2) Amino acids. Amino acids are those L-amino acids commonly found in naturally occurring proteins and are listed in appendix C to this subpart. Those amino acid sequences containing D-amino acids are not intended to be embraced by this definition. Any amino acid sequence that contains post-translationally modified amino acids may be described as the amino acid sequence that is initially translated using the symbols shown in appendix C to this subpart, with the modified positions ( e.g., hydroxylations or glycosylations) being described as set forth in appendix D to this subpart, but these modifications shall not be shown explicitly in the amino acid sequence. Any peptide or protein that can be expressed as a sequence using the symbols in appendix C to this subpart, in conjunction with a description in the Feature section, to describe, for example, modified linkages, cross links and end caps, non-peptidyl bonds, etc., is embraced by this definition.

Note 1 to paragraph (a): Appendices A through F to this subpart contain Tables 1– 6 of the World Intellectual Property Organization (WIPO) Handbook on Industrial Property Information and Documentation, Standard ST.25: Standard for the Presentation of Nucleotide and Amino Acid Sequence Listings in Patent Applications (2009).

(b) Patent applications which contain disclosures of nucleotide and/or amino acid sequences, in accordance with the definition in paragraph (a) of this section, shall, with regard to the manner in which the nucleotide and/or amino acid sequences are presented and described, conform exclusively to the requirements of §§ 1.821 through 1.825 .

(1) As an ASCII plain text file, in compliance with § 1.824 , submitted via the USPTO patent electronic filing system or on a read-only optical disc under § 1.52(e) , accompanied by an incorporation by reference statement of the ASCII plain text file, in a separate paragraph of the specification, in accordance with § 1.77(b)(5) ;

(2) As a PDF file via the USPTO patent electronic filing system; or

(3) On physical sheets of paper.

(d) Where the description or claims of a patent application discuss a sequence that is set forth in the “Sequence Listing,” in accordance with paragraph (c) of this section, reference must be made to the sequence by use of the sequence identifier (§ 1.823(a)(5) ), preceded by “SEQ ID NO:” or the like, in the text of the description or claims, even if the sequence is also embedded in the text of the description or claims of the patent application. Where a sequence is presented in a drawing, reference must be made to the sequence by use of the sequence identifier (§ 1.823(a)(5) ), either in the drawing or in the Brief Description of the Drawings, where the correlation between multiple sequences in the drawing and their sequence identifiers (§ 1.823(a)(5) ) in the Brief Description is clear.

(i) A CRF of the “Sequence Listing,” in accordance with the requirements of § 1.824 ; and

(ii) A statement that the sequence information contained in the CRF submitted under paragraph (e)(1)(i) of this section is identical to the sequence information contained in the “Sequence Listing” under paragraph (c) of this section.

(i) A CRF of the “Sequence Listing,” in accordance with the requirements of § 1.824 ; and

(ii) A statement that the sequence information contained in the CRF submitted under paragraph (e)(2)(i) of this section is identical to the sequence information contained in the “Sequence Listing” under paragraph (c)(2) or (3) of this section.

(i) A CRF of the “Sequence Listing,” in accordance with the requirements of § 1.824 ;

(ii) The late furnishing fee for providing a “Sequence Listing” in response to an invitation, as set forth in § 1.445(a)(5) ; and

(iii) A statement that the sequence information contained in the CRF, submitted under paragraph (e)(3)(i) of this section, does not go beyond the disclosure in the international application as filed, or a statement that the information recorded in the ASCII plain text file, submitted under paragraph (e)(3)(i) of this section, is identical to the sequence listing contained in the international application as filed, as applicable.

(4) The CRF may not be retained as a part of the patent application file.

(f) [reserved]

(g) If any of the requirements of paragraphs (b) through (e) of this section are not satisfied at the time of filing under 35 U.S.C. 111(a) or at the time of entering the national stage under 35 U.S.C. 371 , the applicant will be notified and given a period of time within which to comply with such requirements in order to prevent abandonment of the application. Any amendment to add or replace a “Sequence Listing” and CRF copy thereof in reply to a requirement under this paragraph must be submitted in accordance with the requirements of § 1.825 .

(h) If any of the requirements of paragraph (e)(3) of this section are not satisfied at the time of filing an international application under the PCT, and the application is to be searched by the United States International Searching Authority or examined by the United States International Preliminary Examining Authority, the applicant may be sent a notice necessitating compliance with the requirements within a prescribed time period. Where a “Sequence Listing” under PCT Rule 13ter is provided in reply to a requirement under this paragraph, it must be accompanied by a statement that the information recorded in the ASCII plain text file under paragraph (e)(3)(i) of this section is identical to the sequence listing contained in the international application as filed, or does not go beyond the disclosure in the international application as filed, as applicable. It must also be accompanied by the late furnishing fee, as set forth in § 1.445(a)(5) . If the applicant fails to timely provide the required CRF, the United States International Searching Authority shall search only to the extent that a meaningful search can be performed without the CRF, and the United States International Preliminary Examining Authority shall examine only to the extent that a meaningful examination can be performed without the CRF.

[Added, 55 FR 18230, May 1, 1990, effective Oct. 1, 1990; para. (h) amended, 58 FR 4335, Jan. 14, 1993, effective May 1, 1993; revised, 63 FR 29620, June 1, 1998, effective July 1, 1998; paras. (c), (e), and (f) revised, 65 FR 54604, Sept. 8, 2000, effective Sept. 8, 2000 (effective date corrected, 65 FR 78958, Dec. 18, 2000); para. (a) revised, 70 FR 10488, Mar. 4, 2005, effective Mar. 4, 2005; paras. (a), (c) through (e), (g) and (h) revised, para. (f) reserved, 86 FR 57035, Oct. 14, 2021, effective Nov. 15, 2021]

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