Prosecution Insights
Last updated: May 29, 2026
Application No. 18/130,418

Target Ligand

Non-Final OA §112§DOUBLEPATENT
Filed
Apr 03, 2023
Priority
Sep 30, 2020 — CN 202011061038.1 +4 more
Examiner
POLIAKOVA-GEORGAN, EKATERINA
Art Unit
1637
Tech Center
1600 — Biotechnology & Organic Chemistry
Assignee
Nanopeptide (Qingdao) Biotechnology Ltd.
OA Round
1 (Non-Final)
65%
Grant Probability
Moderate
1-2
OA Rounds
0m
Est. Remaining
82%
With Interview

Examiner Intelligence

Grants 65% of resolved cases
65%
Career Allowance Rate
436 granted / 675 resolved
+4.6% vs TC avg
Strong +17% interview lift
Without
With
+17.0%
Interview Lift
resolved cases with interview
Typical timeline
2y 6m
Avg Prosecution
63 currently pending
Career history
729
Total Applications
across all art units

Statute-Specific Performance

§101
1.8%
-38.2% vs TC avg
§103
40.4%
+0.4% vs TC avg
§102
15.9%
-24.1% vs TC avg
§112
6.0%
-34.0% vs TC avg
Black line = Tech Center average estimate • Based on career data from 675 resolved cases

Office Action

§112 §DOUBLEPATENT
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 . Election/Restrictions Applicant’s election without traverse of Group I, claims 1-2, 17 and amended dependent claims 3-16, 18-20, in the reply filed on 11/27/2025 is acknowledged. Upon further consideration species election is withdrawn. Claim Warning Applicant is advised that should claim 3 be found allowable, claim 13 will be objected to under 37 CFR 1.75 as being a substantial duplicate thereof. When two claims in an application are duplicates or else are so close in content that they both cover the same thing, despite a slight difference in wording, it is proper after allowing one claim to object to the other as being a substantial duplicate of the allowed claim. See MPEP § 608.01(m). Claims 3 and 13 recite the same siRNA conjugate with compound of claim 1, with the only difference that claim 13 adds that siRNA and the compound are linked by covalent bond. There is no other option than covalent conjugation of the siRNA and the claimed compound. Therefore, the scopes of both claims are identical. Applicant is advised that should claim 8 be found allowable, claim 15 will be objected to under 37 CFR 1.75 as being a substantial duplicate thereof. When two claims in an application are duplicates or else are so close in content that they both cover the same thing, despite a slight difference in wording, it is proper after allowing one claim to object to the other as being a substantial duplicate of the allowed claim. See MPEP § 608.01(m). Claims 8 and 15 recite the same siRNA conjugate with compound of claim 2, with the only difference that claim 15 adds that siRNA and the compound are linked by covalent bond. There is no other option than covalent conjugation of the siRNA and the claimed compound. Therefore, the scopes of both claims are identical. Claim Rejections - 35 USC § 112 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. Claims 2, 4, 9, 19-20 are 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 2 depends on claim 1 and recites compounds of claim 1 without protecting groups. Therefore claim 2 fails to include all the limitations of claim 1. Claim 4 depends on claim 3, which recites siRNA conjugate comprising compound according to claim 1. Claim 4 adds a limitation that the compound is linked to siRNA as a target ligand. Claim 3 already recites siRNA conjugate, meaning that compound is linked to siRNA. Further characterization of the compound as target ligand does not affect the structure of the conjugate, therefore claim 4 does not further limit claim 3. Claim 9 depends on claim 8, which recites siRNA conjugate comprising compound according to claim 2. Claim 9 adds a limitation that the compound is linked to siRNA as a target ligand. Claim 8 already recites siRNA conjugate, meaning that compound is linked to siRNA. Further characterization of the compound as target ligand does not affect the structure of the conjugate, therefore claim 9 does not further limit claim 8. Claims 19 and 20 both originally depend on claim 18 and add limitations of specific use of pharmaceutical compositions of claim 18 for treatment of specific diseases. Such limitations are of intended use and they do not affect the structure of the pharmaceutical compositions of claim 18. Thus, claims 19 and 20 do not further limit claim 18. 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. 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. Claims 1-20 are provisionally rejected on the ground of nonstatutory double patenting as being unpatentable over claims 1-14 of copending Application No. 18/092,202 (reference application). Although the claims at issue are not identical, they are not patentably distinct from each other because claims from ‘202 recite the same siRNA conjugates as instantly claimed with the same target ligands as in instant claims. Claims from ‘202 do not explicitly recite instant compounds TO23, TO25, TO26, but the specification of ‘202 teach those compounds as intermediates required for synthesis of compounds claimed (see pages 25, 29, 32 of ‘202 specification), making instant compounds TO23, TO25, TO26 obvious. 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 EKATERINA POLIAKOVA whose telephone number is (571)270-5257. The examiner can normally be reached Mon-Fri 8-5. Examiner interviews are available via telephone, in-person, 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, Jennifer Dunston can be reached at (571)272-2916. 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. /EKATERINA POLIAKOVA-GEORGANTAS/Primary Examiner, Art Unit 1637
Read full office action

Prosecution Timeline

Apr 03, 2023
Application Filed
Jan 28, 2026
Non-Final Rejection mailed — §112, §DOUBLEPATENT (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
65%
Grant Probability
82%
With Interview (+17.0%)
2y 6m (~0m remaining)
Median Time to Grant
Low
PTA Risk
Based on 675 resolved cases by this examiner. Grant probability derived from career allowance rate.

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