Prosecution Insights
Last updated: August 17, 2026
Application No. 18/279,173

Graft Copolymer, Curable Resin Composition, and Adhesive Composition

Non-Final OA §102§112
Filed
Aug 28, 2023
Priority
Aug 19, 2021 — RE 10-2021-0109742 +2 more
Examiner
NGUYEN, HA S
Art Unit
1766
Tech Center
1700 — Chemical & Materials Engineering
Assignee
LG Chem Ltd.
OA Round
1 (Non-Final)
58%
Grant Probability
Moderate
1-2
OA Rounds
2m
Est. Remaining
37%
With Interview

Examiner Intelligence

Grants 58% of resolved cases
58%
Career Allowance Rate
363 granted / 622 resolved
-6.6% vs TC avg
Minimal -22% lift
Without
With
+-21.6%
Interview Lift
resolved cases with interview
Typical timeline
3y 2m
Avg Prosecution
35 currently pending
Career history
658
Total Applications
across all art units

Statute-Specific Performance

§101
1.1%
-38.9% vs TC avg
§103
42.9%
+2.9% vs TC avg
§102
21.6%
-18.4% vs TC avg
§112
22.1%
-17.9% vs TC avg
Black line = Tech Center average estimate • Based on career data from 622 resolved cases

Office Action

§102 §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 . Election/Restriction Applicant’s election of Group I, claim(s) 1-8, in the reply filed on 06/23/2026 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 Claims 9-16 are withdrawn from further consideration pursuant to 37 CFR 1.142(b) as being drawn to a nonelected invention, there being no allowable generic or linking claim. Election was made without traverse in the reply filed on 06/23/2026. 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 1-8 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 1 recites “the graft copolymer comprises the core in 75 wt% to 83 wt%...” However, it is unclear how the wt% is calculated and/or in what the % is in reference to, such as whether it is wt% based on the total amount of the core and the shell. Claim 3 recites “wherein the graft monomer comprises a methyl (meth)acrylate monomer, an alkyl (meth)acrylate-based monomer of 2 to 12 carbon atoms…” However, a methyl (meth)acrylate is an alkyl (meth)acrylate-based monomer with 5 total carbon atoms. It is unclear whether the “2 to 12 carbon atoms” is referring to only the “alkyl” portion or to the entire alkyl (meth)acrylate-based monomer. It is also unclear if the alkyl (meth)acrylate-based monomer is the same or different from the methyl (meth)acrylate monomer since the methyl (meth)acrylate meets the alkyl (meth)acrylate-based monomer limitation. Claims 2, 4-8, are dependent claims which fail to alleviate the issues above. Claim Rejections - 35 USC § 102 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 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) 1, 2, 5, 7, 8, is/are rejected under 35 U.S.C. 102(a)(1) as being anticipated by JP 07-324148 A to Okura et al. (hereinafter Okura). Regarding claims 1, 2, 5, 7, 8, Okura teaches a core/shell graft copolymer (B) with a butadiene rubber core having a particle size of 2500 Angstroms (i.e. 250 nm), wherein 75 parts of the core is further polymerized/grafted with monomers 15 parts of methyl methacrylate and 10 parts of styrene to form a particle size of 2600 Angstroms (i.e. 260 nm), (para 75, Example 1), which correlates to 75 wt% of core, and a shell thickness of 10 nm, which meets claims 1, 2, 5, 7, 8. Claim(s) 1, 2, 5-8, is/are rejected under 35 U.S.C. 102(a)(1) as being anticipated by US 2014/0378576 A1 to Jung et al. (hereinafter Jung). Regarding claims 1, 2, 5-8, Jung teaches a core-shell rubber polymer in Comparative Example 3, comprising a core of 85 parts of butadiene and a shell of 5 parts styrene and 10 parts of butyl acrylate, wherein the core has a diameter of 2570 Angstroms (i.e. 257 nm) and final diameter of 2700 Angstroms (i.e. 270 nm), (See Table 1, para 83-86), which correlates to 85 wt% core, and a shell thickness of 13 nm, which meets claims 1, 2, 5-8. Conclusion Any inquiry concerning this communication or earlier communications from the examiner should be directed to HA S NGUYEN whose telephone number is (571)270-7395. The examiner can normally be reached Mon-Fri, Flex schedule 7:30am-4:00pm. 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, Randy Gulakowski can be reached at (571)272-1302. 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. /HA S NGUYEN/ Primary Examiner, Art Unit 1766
Read full office action

Prosecution Timeline

Aug 28, 2023
Application Filed
Jul 13, 2026
Non-Final Rejection mailed — §102, §112 (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
58%
Grant Probability
37%
With Interview (-21.6%)
3y 2m (~2m remaining)
Median Time to Grant
Low
PTA Risk
Based on 622 resolved cases by this examiner. Grant probability derived from career allowance rate.

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