Prosecution Insights
Last updated: May 29, 2026
Application No. 18/270,097

HUMAN GLP-1 POLYPEPTIDE VARIANT AND USE THEREOF

Non-Final OA §103§112§DOUBLEPATENT§DP
Filed
Jun 28, 2023
Priority
Dec 29, 2020 — CN 202011605173.8 +1 more
Examiner
NIEBAUER, RONALD T
Art Unit
1658
Tech Center
1600 — Biotechnology & Organic Chemistry
Assignee
Suzhou Alphamab Co. Ltd.
OA Round
1 (Non-Final)
41%
Grant Probability
Moderate
1-2
OA Rounds
8m
Est. Remaining
75%
With Interview

Examiner Intelligence

Grants 41% of resolved cases
41%
Career Allowance Rate
298 granted / 720 resolved
-18.6% vs TC avg
Strong +34% interview lift
Without
With
+33.8%
Interview Lift
resolved cases with interview
Typical timeline
3y 7m
Avg Prosecution
45 currently pending
Career history
795
Total Applications
across all art units

Statute-Specific Performance

§101
1.6%
-38.4% vs TC avg
§103
41.3%
+1.3% vs TC avg
§102
26.0%
-14.0% vs TC avg
§112
5.4%
-34.6% vs TC avg
Black line = Tech Center average estimate • Based on career data from 720 resolved cases

Office Action

§103 §112 §DOUBLEPATENT §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 . Election/Restrictions and Claim Status Applicant's election with traverse of Group 1 in the reply filed on 2/16/26 is acknowledged. The traversal is on the ground(s) that there is not a serious search and examination burden and that the amended claims are not disclosed or taught by the previously cited reference. This is not found persuasive because a search of the different groups would require the use of different search queries. Further, burden is not necessarily a determining factor for restrictions under 371. With respect to arguments about the amended claims, amended claim 1 is rejected under 103 as discussed in detail below. Thus, the groups lack the same or corresponding special technical feature. The requirement is still deemed proper and is therefore made FINAL. Claims 21-22, 25, 28-30, 32-34 and 40 are withdrawn from further consideration pursuant to 37 CFR 1.142(b), as being drawn to a nonelected invention, there being no allowable generic or linking claim. Applicant timely traversed the restriction (election) requirement in the reply filed on 2/16/26. Applicant’s election of the species of SEQ ID NO:138 (which appears to comprise SEQ ID NOs: 71 + 148 + 143) in the reply filed on 2/16/26 is acknowledged. Because applicant did not distinctly and specifically point out the supposed errors in the restriction requirement, the election has been treated as an election without traverse (MPEP § 818.01(a)). Claims to the elected species are rejected as set forth below. Any relevant art that was uncovered during the search for the elected species is cited herein in order to advance prosecution. Claims 3-10, 12-15, 17-19, 23 and 26-27 have been canceled. Claims 1-2, 11, 16, 20, 24, 31 and 35-39 are being examined. Priority The priority information is found in the filing receipt dated 11/21/23. Information Disclosure Statement The information disclosure statements (IDS) submitted on 2/19/26, 2/19/25 and 10/13/23 have been considered by the examiner. Specification The disclosure is objected to because of the following informalities: 37 CFR 1.821(d) states that each occurrence of a sequence should include the corresponding sequence identifier. In the instant case, figure 32 recites a sequence but the sequence identifier is not included with the figure caption. Appropriate correction is required. Claim Interpretation Section 0104 (page 16 of the 40 page specification) defines the numbering used for the amino acid residues. Since instant claim 1 specifically recites ‘comprises the amino acid sequence set forth in SEQ ID NO: 150’, claim 1 requires the W31Y and K26R mutations along with a mutation at an amino acid position selected from the group consisting of Q23 and Y19 as set forth in SEQ ID NO: 150 compared to the amino acid sequence set forth in SEQ ID NO:2. Claim Rejections - 35 USC § 112 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. Claims 2, 16, 20 and 39 are 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 2 refers to ‘at least partial activity of human GLP-1’. Such determination appears to be subjective. For example, instant figures 6-7 show data and it is unclear if GM-FT, GM-FN, GM-FS, GM-FQ, GM-FE, GM-FV, GM-FK and GM-FI show at least partial activity of human GLP-1 based on those figures. Without a negative control and/or a specific % requirement for partial activity, it is unclear how to determine what values are statistically significant or ‘partial’. Claim 16 recites the limitation "the immunoglobulin Fc region" in relation to claim 11. There is insufficient antecedent basis for this limitation in the claim. Claim 11 does not recite or necessarily require an Fc region (compare section 0091 of the 40 page specification dated 6/28/23). Claim 20 recites ‘set forth in any one of 128-138’. It is unclear what the numbers are in reference to. It is unclear if the numbers are in reference to claims or sequence identifiers or something else. Claim 39 line 3 recites ‘and/or, and’. The use of 2 occurrences of ‘and’ make it unclear if ‘or’ is an option. Although unclear, the claims have been given the broadest reasonable interpretation consistent with the specification and have been interpreted as complying with 35 USC 112(a)/1st. Claim Rejections - 35 USC § 103 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. The following is a quotation of 35 U.S.C. 103 which forms the basis for all obviousness rejections set forth in this Office action: A patent for a claimed invention may not be obtained, notwithstanding that the claimed invention is not identically disclosed as set forth in section 102, if the differences between the claimed invention and the prior art are such that the claimed invention as a whole would have been obvious before the effective filing date of the claimed invention to a person having ordinary skill in the art to which the claimed invention pertains. Patentability shall not be negated by the manner in which the invention was made. This application currently names joint inventors. In considering patentability of the claims the examiner presumes that the subject matter of the various claims was commonly owned as of the effective filing date of the claimed invention(s) absent any evidence to the contrary. Applicant is advised of the obligation under 37 CFR 1.56 to point out the inventor and effective filing dates of each claim that was not commonly owned as of the effective filing date of the later invention in order for the examiner to consider the applicability of 35 U.S.C. 102(b)(2)(C) for any potential 35 U.S.C. 102(a)(2) prior art against the later invention. Claim(s) 1-2, 11, 16, 20, 24, 31 and 35-39 is/are rejected under 35 U.S.C. 103 as being unpatentable over Glaesner et al. (US 7,452,966; ‘Glaesner’) in view of Buckley et al. (US 5,545,618; as cited with IDS 2/19/25; ‘Buckley’) in view of Young et al. (KR 20080060685 2008-07-02; ‘Young’). Young et al. (KR 20080060685 2008-07-02) is not in the English language. An English translation is provided (Translation of KR 20080060685 2008-07-02, 9 total pages) and all references herein unless otherwise specified will be to the English translation. Glaesner teach IgG4-Fc derivatives fused to GLP-1 (abstract). Glaesner teach that the fusions have increased half-life, decreased immunogenicity and reduced effector activity (abstract). In claim 2, Glaesner recites a specific linker and Fc portion. Glaesner recognizes that there can be substitutions at various positions in the GLP-1 portion (column 1 lines 61-67). Gleasner teach compositions with one or more excipients (column 14 lines 17-33). Glaesner does not teach the Y19, K26R and W31Y mutations. Buckley teach GLP-1 analogs with an enhanced stability or enhanced capacity to stimulate insulin production (abstract). Buckley teach analogs with enhanced properties with at least one modification that can be a substitution of arginine for lysine at position 26 (column 3 lines 5-13), a substitution of an amino acid for tryptophan at position 31 (column 3 lines 14-15) specifically with Y (column 12 lines 22-26). Young teach GLP-1 peptides with increased resistance against peptidase where Xaa19 is Ala (abstract on page 1 and formula I on last page). It would have been obvious to one of ordinary skill in the art before the effective filing date to modify the teachings of Glaesner because Glaesner recognizes that there can be substitutions at various positions in the GLP-1 portion (column 1 lines 61-67). Buckley teach GLP-1 analogs with an enhanced stability or enhanced capacity to stimulate insulin production (abstract). Buckley teach analogs with enhanced properties with at least one modification that can be a substitution of arginine for lysine at position 26 (column 3 lines 5-13), a substitution of an amino acid for tryptophan at position 31 (column 3 lines 14-15) specifically with Y (column 12 lines 22-26). Young teach GLP-1 peptides with increased resistance against peptidase where Xaa19 is Ala (abstract on page 1 and formula I on last page). Based on the advantages disclosed, one would have been motivated to use the specific mutations taught by Buckley and Young in the construct of Glaesner (see claim 2). One would have had a reasonable expectation of success because methods of making polypeptides were known and because Glaesner recites a specific linker and Fc portion (claim 2) and recognizes that there can be substitutions at various positions in the GLP-1 portion (column 1 lines 61-67). In relation to the polypeptide of claims 1-2 and 35, Buckley teach analogs with enhanced properties with at least one modification that can be a substitution of arginine for lysine at position 26 (column 3 lines 5-12), a substitution of an amino acid for tryptophan at position 31 (column 3 lines 14-15) specifically with Y (column 12 lines 22-26). Young teach GLP-1 peptides with increased resistance against peptidase where Xaa19 is Ala (abstract on page 1 and formula I on last page). The Y19A, K26R and W31Y mutations correspond to instant SEQ ID NO:71. In relation to the fusion protein of claims 11, 16, 20 and 36-39, Glaesner recites a specific linker and Fc portion (claim 2). The sequence comprises a linker that corresponds to instant SEQ ID NO:48 and an Fc that corresponds to instant SEQ ID NO:143. In relation to the compositions of claims 24 and 31, Gleasner teach compositions with one or more excipients (column 14 lines 17-33). When the Y19A, K26R and W31Y mutations as discussed above are substituted into the sequence of claim 2 of Glaesner the sequence comprises instant SEQ ID NO: 138 (which is SEQ ID NO: 71 + 148 + 143). 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 1-2, 11, 16, 20, 24, 31 and 35-39 are provisionally rejected on the ground of nonstatutory double patenting as being unpatentable over claims 1-2, 7-8, 12, 18, 24-25, 34, 36, 40-41, 44, 46-50, 54 and 60 of copending Application No. 18/576,021 (reference application; ‘021’). Although the claims at issue are not identical, they are not patentably distinct from each other. This is a provisional nonstatutory double patenting rejection because the patentably indistinct claims have not in fact been patented. 021 recites a fusion protein comprising a GLP-1 polypeptide variant and an immunoglobulin Fc region (claim 1). 021 recites specific mutations including W31Y, Y19A and K26R (claim 25). 021 recites compositions (claim 49) and immunoconjugates (claim 50). 021 recites SEQ ID NOs: 37-45 (claim 44) and Table 1 of the specification reveals that SEQ ID NOs:40-41 include the triple mutation Y19A, K26R and W31Y a linker and Fc region of IgG4 (page 26). In relation to the polypeptide of claims 1-2 and 35, 021 recites a protein comprising a GLP-1 polypeptide variant (claim 1). 021 recites specific mutations including W31Y, Y19A and K26R (claim 25). 021 recites SEQ ID NOs: 37-45 (claim 44) and Table 1 of the specification reveals that SEQ ID NOs:40-41 include the triple mutation Y19A, K26R and W31Y (page 26) which is instant SEQ ID NO:71. In relation to the fusion protein of claims 11, 16, 20 and 36-39, 021 recites SEQ ID NOs: 37-45 (claim 44) and Table 1 of the specification reveals that SEQ ID NOs:40-41 include the triple mutation Y19A, K26R and W31Y a linker and Fc region of IgG4 (page 26). In relation to the compositions of claims 24 and 31, 021 recites compositions (claim 49) and immunoconjugates (claim 50). Claims 1-2, 11, 16, 20, 24, 31 and 35-39 are provisionally rejected on the ground of nonstatutory double patenting as being unpatentable over claims 1-2, 7-8, 12, 18, 24-25, 34, 36, 40-41, 44, 46-50, 54 and 60 of copending Application No. 18/576,021 (reference application; ‘021’) in view of Glaesner et al. (US 7,452,966; ‘Glaesner’). This is a provisional nonstatutory double patenting rejection. 021 recites a fusion protein comprising a GLP-1 polypeptide variant and an immunoglobulin Fc region (claim 1). 021 recites specific mutations including W31Y, Y19A and K26R (claim 25). 021 recites compositions (claim 49) and immunoconjugates (claim 50). 021 recites SEQ ID NOs: 37-45 (claim 44) and Table 1 of the specification reveals that SEQ ID NOs:40-41 include the triple mutation Y19A, K26R and W31Y a linker and Fc region of IgG4 (page 26). 021 does not recite the elected fusion of SEQ ID NO:138. Glaesner teach IgG4-Fc derivatives fused to GLP-1 (abstract). Glaesner teach that the fusions have increased half-life, decreased immunogenicity and reduced effector activity (abstract). In claim 2, Glaesner recites a specific linker and Fc portion. It would have been obvious to one of ordinary skill in the art before the effective filing date to modify the teachings of 021 because 021 recites a fusion protein comprising a GLP-1 polypeptide variant and an immunoglobulin Fc region (claim 1). Glaesner teach IgG4-Fc derivatives fused to GLP-1 (abstract). Glaesner teach that the fusions have increased half-life, decreased immunogenicity and reduced effector activity (abstract). In claim 2, Glaesner recites a specific linker and Fc portion. Based on the advantages disclosed in Glaesner, one would have been motivated to use the specific linker and IgG4-Fc fusion with the peptide taught by 021. One would have had a reasonable expectation of success because methods of making polypeptides was known and because Glaesner recites a specific linker and Fc portion (claim 2). In relation to the polypeptide of claims 1-2 and 35, 021 recites a protein comprising a GLP-1 polypeptide variant (claim 1). 021 recites specific mutations including W31Y, Y19A and K26R (claim 25). 021 recites SEQ ID NOs: 37-45 (claim 44) and Table 1 of the specification reveals that SEQ ID NOs:40-41 include the triple mutation Y19A, K26R and W31Y (page 26) which is instant SEQ ID NO:71. In relation to the fusion protein of claims 11, 16, 20 and 36-39, 021 recites SEQ ID NOs: 37-45 (claim 44) and Table 1 of the specification reveals that SEQ ID NOs:40-41 include the triple mutation Y19A, K26R and W31Y a linker and Fc region of IgG4 (page 26). In relation to the compositions of claims 24 and 31, 021 recites compositions (claim 49) and immunoconjugates (claim 50). Further, in relation to the elected fusion, when the Y19A, K26R and W31Y triple mutant of 021 is fused via the linker and Fc region of Glaesner the resulting sequence is the instantly elected fusion which is instant SEQ ID NO: 138 (which is SEQ ID NO: 71 + 148 + 143). Conclusion Any inquiry concerning this communication or earlier communications from the examiner should be directed to RONALD T NIEBAUER whose telephone number is (571)270-3059. The examiner can normally be reached M - F 6:30 - 2:30 EST. 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, 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. RONALD T. NIEBAUER Primary Examiner Art Unit 1658 /RONALD T NIEBAUER/Examiner, Art Unit 1658
Read full office action

Prosecution Timeline

Jun 28, 2023
Application Filed
Apr 27, 2026
Non-Final Rejection mailed — §103, §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
41%
Grant Probability
75%
With Interview (+33.8%)
3y 7m (~8m remaining)
Median Time to Grant
Low
PTA Risk
Based on 720 resolved cases by this examiner. Grant probability derived from career allowance rate.

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