Prosecution Insights
Last updated: April 19, 2026
Application No. 18/039,218

A PEPTIDE WITH DISULFIDE BONDS AND INHIBITORY ACTIVITY AGAINST SERINE PROTEASES, DERIVED HYBRID PEPTIDES THEREOF, AND USES THEREOF

Non-Final OA §102§112§DP
Filed
May 26, 2023
Examiner
REYNOLDS, FRED H
Art Unit
1658
Tech Center
1600 — Biotechnology & Organic Chemistry
Assignee
Institute of Materia Medica, Chinese Academy of Medical Sciences
OA Round
1 (Non-Final)
33%
Grant Probability
At Risk
1-2
OA Rounds
2y 10m
To Grant
72%
With Interview

Examiner Intelligence

Grants only 33% of cases
33%
Career Allow Rate
269 granted / 815 resolved
-27.0% vs TC avg
Strong +40% interview lift
Without
With
+39.5%
Interview Lift
resolved cases with interview
Typical timeline
2y 10m
Avg Prosecution
104 currently pending
Career history
919
Total Applications
across all art units

Statute-Specific Performance

§101
3.9%
-36.1% vs TC avg
§103
33.3%
-6.7% vs TC avg
§102
13.2%
-26.8% vs TC avg
§112
26.5%
-13.5% vs TC avg
Black line = Tech Center average estimate • Based on career data from 815 resolved cases

Office Action

§102 §112 §DP
DETAILED ACTION Notice of Pre-AIA or AIA Status The present application, filed on or after March 16, 2013, is being examined under the first inventor to file provisions of the AIA . In the event the determination of the status of the application as subject to AIA 35 U.S.C. 102 and 103 (or as subject to pre-AIA 35 U.S.C. 102 and 103) is incorrect, any correction of the statutory basis (i.e., changing from AIA to pre-AIA ) for the rejection will not be considered a new ground of rejection if the prior art relied upon, and the rationale supporting the rejection, would be the same under either status. Specification The disclosure is objected to because of the following informalities: the disclosure has sequences listed without their SEQ ID number, note p35, 2nd and 3d paragraphs, for example. The MPEP states that "37 CFR 1.821(d) requires the use of the assigned sequence identifier in all instances where the description or claims of a patent application discuss sequences regardless of whether a given sequence is also embedded in the text of the description or claims of an application” (MPEP 2422.03). Appropriate correction is required. Election/Restrictions Applicant's election with traverse of group I and SEQ ID 90 in the reply filed on 30 Jan, 2026 is acknowledged. The traversal is on the ground(s) that there is no search burden to search the claims in their entirety. This is not found persuasive because search burden is not the basis for restriction. For national stage applications filed under 35 USC 371the applicable standard for restriction is 37 CFR 1.499, where lack of unity is required for restriction. This regulation is silent on search burden. As applicants have stated on their application data sheet and on their declaration that this application was filed under 35 USC 371, search burden is not the proper criteria for restriction of this application. The requirement is still deemed proper and is therefore made FINAL. Applicants have elected polypeptides, specifically, SEQ ID 90. A search was conducted for this species, and it was determined to be both novel and unobvious over the prior art. The closest reference found was Bourhis et al (US 20120100562). This reference discloses the sequence SCTNSIPPQCYG (fig 20), which has an F1S and Y4N mutation relative to SEQ ID 90 of the examined claims. However, the Asn residue is required for binding in their application (paragraph 188), teaching away from mutating it to a Tyr residue. Thus, the elected species is both novel and unobvious over the prior art. Following Markush practice, the search was expanded to the Markush claim, claim 11, and a reference was found that anticipated the claim. As a result, claim 11 was examined, and claims 1-10 and 12-28 have been withdrawn from consideration. Claims Status Claims 1-28 are pending. Claims 1, 2, 7, and 20 have been amended. Claims 1-10 and 12-28 have been withdrawn from further consideration pursuant to 37 CFR 1.142(b), as being drawn to a nonelected group or species, there being no allowable generic or linking claim. Applicant timely traversed the restriction (election) requirement in the reply filed on 30 Jan, 2026. Claim Rejections - 35 USC § 112(b) The following is a quotation of 35 U.S.C. 112(b): (b) CONCLUSION.—The specification shall conclude with one or more claims particularly pointing out and distinctly claiming the subject matter which the inventor or a joint inventor regards as the invention. The following is a quotation of 35 U.S.C. 112 (pre-AIA ), second paragraph: The specification shall conclude with one or more claims particularly pointing out and distinctly claiming the subject matter which the applicant regards as his invention. Claim 11 is rejected under 35 U.S.C. 112(b) or 35 U.S.C. 112 (pre-AIA ), second paragraph, as being indefinite for failing to particularly point out and distinctly claim the subject matter which the inventor or a joint inventor (or for applications subject to pre-AIA 35 U.S.C. 112, the applicant), regards as the invention. Claim 11 is drawn to a peptide or its analog having N-terminal, C-terminal, or side chain modifications. It is not clear if the N-terminal, C-terminal, or side chain modification defines the analog, or if the claim is drawn to a peptide or its analog, which in either case must be modified on a side chain or the end of the sequence. Formally, it is not clear if peptide or its analog is a phrase modified by “having,” or if “having” only modifies “analog.” Note that applicants have not defined “analog,” Claim Rejections - 35 USC § 112(d) The following is a quotation of 35 U.S.C. 112(d): (d) REFERENCE IN DEPENDENT FORMS.—Subject to subsection (e), a claim in dependent form shall contain a reference to a claim previously set forth and then specify a further limitation of the subject matter claimed. A claim in dependent form shall be construed to incorporate by reference all the limitations of the claim to which it refers. The following is a quotation of pre-AIA 35 U.S.C. 112, fourth paragraph: Subject to the following paragraph [i.e., the fifth paragraph of pre-AIA 35 U.S.C. 112], a claim in dependent form shall contain a reference to a claim previously set forth and then specify a further limitation of the subject matter claimed. A claim in dependent form shall be construed to incorporate by reference all the limitations of the claim to which it refers. Claim 11 is rejected under 35 U.S.C. 112(d) or pre-AIA 35 U.S.C. 112, 4th paragraph, as being of improper dependent form for failing to further limit the subject matter of the claim upon which it depends, or for failing to include all the limitations of the claim upon which it depends. Claim 10, from which claim 11 depends, requires that Xaa5 be absent, but SEQ ID 105, from claim 11, has Xaa5=Gly. Applicant may cancel the claim(s), amend the claim(s) to place the claim(s) in proper dependent form, rewrite the claim(s) in independent form, or present a sufficient showing that the dependent claim(s) complies with the statutory requirements. Claim Rejections - 35 USC § 102 The following is a quotation of the appropriate paragraphs of 35 U.S.C. 102 that form the basis for the rejections under this section made in this Office action: A person shall be entitled to a patent unless – (a)(1) the claimed invention was patented, described in a printed publication, or in public use, on sale, or otherwise available to the public before the effective filing date of the claimed invention. Claim(s) 11 is rejected under 35 U.S.C. 102(a)(1) as being anticipated by Harris et al (WO 2012083385). Harris et al discloses a head to tail cyclic peptide GTCTFSIPPICNPN (p8, line 19, continued to p9, line16, SFTI-TCTF N12 N14). Note that this is identical to SEQ ID 105 of the examined claims, with the C-terminus attached to the N-terminus. This means that the N-terminus is acylated (with the C-terminus), and the C-terminus is amidated (with the N-terminus), anticipating claim 11. Double Patenting The nonstatutory double patenting rejection is based on a judicially created doctrine grounded in public policy (a policy reflected in the statute) so as to prevent the unjustified or improper timewise extension of the “right to exclude” granted by a patent and to prevent possible harassment by multiple assignees. A nonstatutory double patenting rejection is appropriate where the conflicting claims are not identical, but at least one examined application claim is not patentably distinct from the reference claim(s) because the examined application claim is either anticipated by, or would have been obvious over, the reference claim(s). See, e.g., In re Berg, 140 F.3d 1428, 46 USPQ2d 1226 (Fed. Cir. 1998); In re Goodman, 11 F.3d 1046, 29 USPQ2d 2010 (Fed. Cir. 1993); In re Longi, 759 F.2d 887, 225 USPQ 645 (Fed. Cir. 1985); In re Van Ornum, 686 F.2d 937, 214 USPQ 761 (CCPA 1982); In re Vogel, 422 F.2d 438, 164 USPQ 619 (CCPA 1970); In re Thorington, 418 F.2d 528, 163 USPQ 644 (CCPA 1969). A timely filed terminal disclaimer in compliance with 37 CFR 1.321(c) or 1.321(d) may be used to overcome an actual or provisional rejection based on nonstatutory double patenting provided the reference application or patent either is shown to be commonly owned with the examined application, or claims an invention made as a result of activities undertaken within the scope of a joint research agreement. See MPEP § 717.02 for applications subject to examination under the first inventor to file provisions of the AIA as explained in MPEP § 2159. See MPEP § 2146 et seq. for applications not subject to examination under the first inventor to file provisions of the AIA . A terminal disclaimer must be signed in compliance with 37 CFR 1.321(b). The filing of a terminal disclaimer by itself is not a complete reply to a nonstatutory double patenting (NSDP) rejection. A complete reply requires that the terminal disclaimer be accompanied by a reply requesting reconsideration of the prior Office action. Even where the NSDP rejection is provisional the reply must be complete. See MPEP § 804, subsection I.B.1. For a reply to a non-final Office action, see 37 CFR 1.111(a). For a reply to final Office action, see 37 CFR 1.113(c). A request for reconsideration while not provided for in 37 CFR 1.113(c) may be filed after final for consideration. See MPEP §§ 706.07(e) and 714.13. The USPTO Internet website contains terminal disclaimer forms which may be used. Please visit www.uspto.gov/patent/patents-forms. The actual filing date of the application in which the form is filed determines what form (e.g., PTO/SB/25, PTO/SB/26, PTO/AIA /25, or PTO/AIA /26) should be used. A web-based eTerminal Disclaimer may be filled out completely online using web-screens. An eTerminal Disclaimer that meets all requirements is auto-processed and approved immediately upon submission. For more information about eTerminal Disclaimers, refer to www.uspto.gov/patents/apply/applying-online/eterminal-disclaimer. Claim 11 is provisionally rejected on the ground of nonstatutory double patenting as being unpatentable over claims 1 and 2 of copending Application No. 18/870,356 (reference application). Although the claims at issue are not identical, they are not patentably distinct from each other because the competing claims anticipate the examined claims. Competing claim 1 describes fusion proteins of insulin and a chymotrypsin inhibitory peptide. Competing claim 2 specifies a Markush group of chymotrypsin inhibitory peptides, including SEQ ID 6, identical with SEQ ID 105 of the examined claims. This is a provisional nonstatutory double patenting rejection because the patentably indistinct claims have not in fact been patented. Conclusion Any inquiry concerning this communication or earlier communications from the examiner should be directed to FRED REYNOLDS whose telephone number is (571)270-7214. The examiner can normally be reached M-Th 9-3:30. Examiner interviews are available via telephone and video conferencing using a USPTO supplied web-based collaboration tool. To schedule an interview, applicant is encouraged to use the USPTO Automated Interview Request (AIR) at http://www.uspto.gov/interviewpractice. If attempts to reach the examiner by telephone are unsuccessful, the examiner’s supervisor, Melissa Fisher can be reached at 571-270-7430. The fax phone number for the organization where this application or proceeding is assigned is 571-273-8300. Information regarding the status of published or unpublished applications may be obtained from Patent Center. Unpublished application information in Patent Center is available to registered users. To file and manage patent submissions in Patent Center, visit: https://patentcenter.uspto.gov. Visit https://www.uspto.gov/patents/apply/patent-center for more information about Patent Center and https://www.uspto.gov/patents/docx for information about filing in DOCX format. For additional questions, contact the Electronic Business Center (EBC) at 866-217-9197 (toll-free). If you would like assistance from a USPTO Customer Service Representative, call 800-786-9199 (IN USA OR CANADA) or 571-272-1000. /FRED H REYNOLDS/Primary Examiner, Art Unit 1658
Read full office action

Prosecution Timeline

May 26, 2023
Application Filed
Mar 09, 2026
Non-Final Rejection — §102, §112, §DP (current)

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Study what changed to get past this examiner. Based on 5 most recent grants.

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Prosecution Projections

1-2
Expected OA Rounds
33%
Grant Probability
72%
With Interview (+39.5%)
2y 10m
Median Time to Grant
Low
PTA Risk
Based on 815 resolved cases by this examiner. Grant probability derived from career allow rate.

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