Prosecution Insights
Last updated: August 17, 2026
Application No. 18/576,260

Antibacterial Copolymer

Non-Final OA §102§103
Filed
Jan 03, 2024
Priority
Jul 16, 2021 — RE 10-2021-0093704 +1 more
Examiner
LISTVOYB, GREGORY
Art Unit
Tech Center
Assignee
LG Chem Ltd.
OA Round
1 (Non-Final)
67%
Grant Probability
Favorable
1-2
OA Rounds
5m
Est. Remaining
96%
With Interview

Examiner Intelligence

Grants 67% — above average
67%
Career Allowance Rate
813 granted / 1214 resolved
+7.0% vs TC avg
Strong +30% interview lift
Without
With
+29.5%
Interview Lift
resolved cases with interview
Typical timeline
3y 0m
Avg Prosecution
40 currently pending
Career history
1240
Total Applications
across all art units

Statute-Specific Performance

§101
0.3%
-39.7% vs TC avg
§103
58.5%
+18.5% vs TC avg
§102
20.3%
-19.7% vs TC avg
§112
7.1%
-32.9% vs TC avg
Black line = Tech Center average estimate • Based on career data from 1214 resolved cases

Office Action

§102 §103
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 § 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. Claims 1-9 and 13 are rejected under 35 U.S.C. 102(a)(1) as being anticipated by Wang et al (Self-Catalyzed Living Radical Polymerization Using Quaternary Ammonium-Iodide-Containing Monomers, Macromolecules 2019, 52, 2712−2718, published on March 27, 2019, cited in IDS. Wang discloses antibacterial copolymer (see page 2717, chapter “Conclusions”, meeting the limitations of claim 13) formed from methylmethacrylate (i.e., MMA, meeting the limitations of claims 7 and 8) and the following monomer (see Figure 1 at page 2713 and Table 1, entry 7 at page 2714, meeting the limitations of claims 2-6): PNG media_image1.png 192 72 media_image1.png Greyscale Regarding claim 9, Wang teaches MMA-C6MAI copolymer (see Table 1, entry 2), which has Mn value of 11000. Claims 1-9 and 13 are rejected under 35 U.S.C. 102(a)(1) as being anticipated by Zhao et al (Self-Stratified Antimicrobial Acrylic Coatings via One-Step UV Curing, ACS Appl. Mater. Interfaces 2015, 7, 18467−18472, published on July 30, 2015, cited in IDS). Zhao teaches an antibacterial coating effective against Gram positive and Gram negative E.coli (see page 18471, left column) used in healthcare settings, food industry, biomedical industry (see page 18471, right column) obtained via one-step UV curing of a mixture of acrylic monomers, including MMA, the cross linker EGDMA, and a QAC-containing perfluoroalkyl monomer (QAC-2) (see page 18471, left column). Zhao teaches that QAC-2 can be equally replaced by QAC-1 having the following formula (meeting the limitations of claims 1-5): PNG media_image2.png 102 310 media_image2.png Greyscale As a result, all limitations of claims 1-5, 7-8 and 120-14 are met. Claim Rejections - 35 USC § 103 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. Claims 10-12 and 14 are rejected under 35 U.S.C. 103 as being unpatentable over Wang as applied to claims 1-9 and 13 above, and further in view of Zhao. Wang fails to teach an antibacterial property and a specific application for the antibacterial copolymer. Zhao teaches an antibacterial coating effective against Gram positive and Gram negative E.coli (see page 18471, left column) used in healthcare settings, food industry, biomedical industry (see page 18471, right column) obtained via one-step UV curing of a mixture of acrylic monomers, including MMA, the cross linker EGDMA, and a QAC-containing perfluoroalkyl monomer (QAC-2) (see page 18471, left column). The position isa taken that since Wang and Zhao disclose the polymer from the same or analogous monomers, they possess the same antibacterial properties and can be used in the same applications. Therefore, it would have been obvious to a person of ordinary skills in the art before the effective filing date of the invention to expect the same properties from Wang’s and Zhao’s polymers and the same applications for them, since they built from the same monomers. Any inquiry concerning this communication or earlier communications from the examiner should be directed to GREGORY LISTVOYB whose telephone number is (571)272-6105. The examiner can normally be reached 9am-5pm EST M-F. 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, Heidi Riviere Kelley can be reached at (571) 270-1831. 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. GL /GREGORY LISTVOYB/Primary Examiner, Art Unit 1765
Read full office action

Prosecution Timeline

Jan 03, 2024
Application Filed
Jul 16, 2026
Non-Final Rejection mailed — §102, §103 (current)

Precedent Cases

Applications granted by this same examiner with similar technology

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METHOD FOR THE CONTINUOUS PREPARATION OF FORMULATED POLYAMIDE PREPOLYMERS
3y 2m to grant Granted Jul 28, 2026
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POLYBUTYLENE TEREPHTHALATE COMPOSITION AND RADAR DEVICE COMPONENT THEREOF
3y 2m to grant Granted Jul 21, 2026
Patent 12679929
POLYESTER RESIN
2y 8m to grant Granted Jul 14, 2026
Patent 12674022
METHOD FOR PRODUCING ALIPHATIC POLYESTER, ALIPHATIC POLYESTER RESIN, AND ALIPHATIC POLYESTER RESIN COMPOSITION
3y 9m to grant Granted Jul 07, 2026
Patent 12662569
PROCESS FOR THE FREE RADICAL POLYMERIZATION OF THIONOLACTONES OR THIONOCARBONATES
3y 8m to grant Granted Jun 23, 2026
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
67%
Grant Probability
96%
With Interview (+29.5%)
3y 0m (~5m remaining)
Median Time to Grant
Low
PTA Risk
Based on 1214 resolved cases by this examiner. Grant probability derived from career allowance rate.

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