Prosecution Insights
Last updated: July 05, 2026
Application No. 18/255,626

Crosslinked copolymer having repeating unit carrying amide group and carboxyl and/or its ammonium salt and repeating unit of a-monoolefin

Final Rejection §112
Filed
Jun 02, 2023
Priority
Dec 02, 2020 — CN 202011391525.4 +1 more
Examiner
EGWIM, KELECHI CHIDI
Art Unit
1762
Tech Center
1700 — Chemical & Materials Engineering
Assignee
Tsinghua University
OA Round
2 (Final)
70%
Grant Probability
Favorable
3-4
OA Rounds
0m
Est. Remaining
84%
With Interview

Examiner Intelligence

Grants 70% — above average
70%
Career Allowance Rate
556 granted / 796 resolved
+4.8% vs TC avg
Moderate +14% lift
Without
With
+13.9%
Interview Lift
resolved cases with interview
Typical timeline
3y 1m
Avg Prosecution
40 currently pending
Career history
845
Total Applications
across all art units

Statute-Specific Performance

§101
0.7%
-39.3% vs TC avg
§103
42.4%
+2.4% vs TC avg
§102
49.8%
+9.8% vs TC avg
§112
2.9%
-37.1% vs TC avg
Black line = Tech Center average estimate • Based on career data from 796 resolved cases

Office Action

§112
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 . Claim Rejections - 35 USC § 112 The following is a quotation of the first paragraph of 35 U.S.C. 112(a): (a) IN GENERAL.—The specification shall contain a written description of the invention, and of the manner and process of making and using it, in such full, clear, concise, and exact terms as to enable any person skilled in the art to which it pertains, or with which it is most nearly connected, to make and use the same, and shall set forth the best mode contemplated by the inventor or joint inventor of carrying out the invention. The following is a quotation of the first paragraph of pre-AIA 35 U.S.C. 112: The specification shall contain a written description of the invention, and of the manner and process of making and using it, in such full, clear, concise, and exact terms as to enable any person skilled in the art to which it pertains, or with which it is most nearly connected, to make and use the same, and shall set forth the best mode contemplated by the inventor of carrying out his invention. Claims 1-20 are rejected under 35 U.S.C. 112(a) or 35 U.S.C. 112 (pre-AIA ), first paragraph, because the specification, while being enabling for the copolymer comprising maleic anhydride that has been aminolyzed so that the repeating unit carries an amide group and a carboxyl, does not reasonably provide enablement for a copolymer which has any repeating unit carrying an amide group and a carboxyl and/or its ammonium salt. The specification does not enable any person skilled in the art to which it pertains, or with which it is most nearly connected, to make and use the invention commensurate in scope with these claims. While the specification specifically names maleic anhydride, itaconic anhydride, citraconic anhydride, and methylene malonic anhydride, the claimed any repeating unit carrying an amide group and a carboxyl and/or its ammonium salt is the reaction product of aminolyzing the copolymer comprising the polymerized repeating anhydride unit, and the only anhydride demonstrated in the specification is maleic anhydride. As maleic anhydride is the only anhydride demonstrated to be preparable with the present process, the claim to the copolymer coating any repeating unit carrying an amide group and a carboxyl and/or its ammonium salt is not sufficiently enabled. Response to Arguments Due to amendments and persuasive arguments by applicant, the previous rejections of record have been overcome and are hereby withdrawn. Applicant’s arguments with respect to the claims have been considered but are moot because the new ground of rejection does not rely on any reference applied in the prior rejection of record for any teaching or matter specifically challenged in the argument. THIS ACTION IS MADE FINAL. See MPEP § 706.07(a). Applicant is reminded of the extension of time policy as set forth in 37 CFR 1.136(a). A shortened statutory period for reply to this final action is set to expire THREE MONTHS from the mailing date of this action. In the event a first reply is filed within TWO MONTHS of the mailing date of this final action and the advisory action is not mailed until after the end of the THREE-MONTH shortened statutory period, then the shortened statutory period will expire on the date the advisory action is mailed, and any nonprovisional extension fee (37 CFR 1.17(a)) pursuant to 37 CFR 1.136(a) will be calculated from the mailing date of the advisory action. In no event, however, will the statutory period for reply expire later than SIX MONTHS from the mailing date of this final action. Any inquiry concerning this communication or earlier communications from the examiner should be directed to KELECHI CHIDI EGWIM whose telephone number is (571)272-1099. The examiner can normally be reached M-Th 9-7. 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, Robert Jones can be reached at (571) 270-7733. 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. /KELECHI C EGWIM/Primary Examiner, Art Unit 1762 KCE
Read full office action

Prosecution Timeline

Jun 02, 2023
Application Filed
Dec 18, 2025
Non-Final Rejection mailed — §112
Feb 11, 2026
Response Filed
Jun 08, 2026
Final Rejection mailed — §112
Jun 17, 2026
Interview Requested
Jul 02, 2026
Applicant Interview (Telephonic)
Jul 02, 2026
Examiner Interview Summary

Precedent Cases

Applications granted by this same examiner with similar technology

Patent 12649869
METHOD FOR PRODUCING A PRESSURE-SENSITIVE ADHESIVE BASED ON AN ALKOXYLATED, IN PARTICULAR ETHOXYLATED, SILANE-CONTAINING POLYMER, PRESSURE-SENSITIVE ADHESIVE PRODUCED ACCORDING TO THIS METHOD, AND USE THEREOF
4y 6m to grant Granted Jun 09, 2026
Patent 12643989
ANTIMICROBIAL MEDICAL GLOVE
4y 5m to grant Granted Jun 02, 2026
Patent 12630660
AQUEOUS DISPERSION OF POLYMER PARTICLES AND USES THEREOF AS AN ADHESIVE COMPOSITION
4y 2m to grant Granted May 19, 2026
Patent 12617884
ORGANIC FINE PARTICLE
4y 1m to grant Granted May 05, 2026
Patent 12590220
THERMOSETTING COMPOSITION, METHOD FOR MANUFACTURING MOLDED ARTICLE USING THE SAME, AND CURED PRODUCT
5y 4m to grant Granted Mar 31, 2026
Study what changed to get past this examiner. Based on 5 most recent grants.

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Prosecution Projections

3-4
Expected OA Rounds
70%
Grant Probability
84%
With Interview (+13.9%)
3y 1m (~0m remaining)
Median Time to Grant
Moderate
PTA Risk
Based on 796 resolved cases by this examiner. Grant probability derived from career allowance rate.

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