Prosecution Insights
Last updated: July 17, 2026
Application No. 18/355,899

POLYMER AND TRIAZINE COMPOUND

Non-Final OA §103
Filed
Jul 20, 2023
Priority
Aug 02, 2022 — JP 2022-123504
Examiner
DU, SURBHI M
Art Unit
1765
Tech Center
1700 — Chemical & Materials Engineering
Assignee
Tokyo Ohka Kogyo Co., Ltd.
OA Round
1 (Non-Final)
68%
Grant Probability
Favorable
1-2
OA Rounds
2m
Est. Remaining
95%
With Interview

Examiner Intelligence

Grants 68% — above average
68%
Career Allowance Rate
79 granted / 117 resolved
+2.5% vs TC avg
Strong +28% interview lift
Without
With
+27.8%
Interview Lift
resolved cases with interview
Typical timeline
3y 2m
Avg Prosecution
35 currently pending
Career history
157
Total Applications
across all art units

Statute-Specific Performance

§103
79.3%
+39.3% vs TC avg
§102
5.3%
-34.7% vs TC avg
§112
6.4%
-33.6% vs TC avg
Black line = Tech Center average estimate • Based on career data from 117 resolved cases

Office Action

§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 . Election/Restrictions Applicant’s election without traverse of Group I, Claims 1-3 and 6-8 in the reply filed on 04/23/2026 is acknowledged. Claims 4-5 and 9-15 are withdrawn from further consideration pursuant to 37 CFR 1.142(b) as being drawn to a nonelected claims. 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. The factual inquiries for establishing a background for determining obviousness under 35 U.S.C. 103 are summarized as follows: 1. Determining the scope and contents of the prior art. 2. Ascertaining the differences between the prior art and the claims at issue. 3. Resolving the level of ordinary skill in the pertinent art. 4. Considering objective evidence present in the application indicating obviousness or nonobviousness. Claims 1-3 and 6-8 are rejected under 35 U.S.C. 103 as being unpatentable over Ishii US 2019/0367674 A1. Regarding claims 1-3, Ishii discloses (reference claims 1 and 4) a triazine ring containing polymer, comprising a structural unit represented by the formula (1) as shown below. PNG media_image1.png 135 273 media_image1.png Greyscale PNG media_image2.png 66 121 media_image2.png Greyscale Where R’ is a divalent group and can be a phenyl group of the following formula (5). And where A represents a divalent group consisting of -NH- , and where R represents an aromatic hydrocarbon group comprising a group which is a combination of an aliphatic hydrocarbon group and one group selected to be -O-(C=O)-O-. Ishii notes that the aliphatic hydrocarbon can be a t-butyl group (para [0073]) and the aromatic hydrocarbon can be phenyl group (para [0076]), which would result in the repeat unit as depicted below. PNG media_image3.png 575 838 media_image3.png Greyscale It would have been obvious to one of ordinary skilled in the art before the effective filing date of the invention to choose R’, A and R groups corresponding to the claimed repeat unit from the expressly disclosed suitable substituents for the generation of a polymer containing triazine ring useful for the same application of creating a lens material (Ishii para [0183], Instant spec para [0001]). Regarding claim 6, Ishii teaches (Example 21, para [0182]) creation of a triazine ring containing polymer by the condensing a dichlorotriazine compound A-3 (shown below) PNG media_image4.png 149 167 media_image4.png Greyscale and p-phenylenediamine (corresponding to A5-1). Ishii adds that those skilled in the art would readily make modifications to the exemplary embodiments (para [0184]). As discussed when addressing claim 1, it would have been obvious to one of ordinary skilled in the art before the effective filing date of the invention to have substituted the phenyl group with -O-(C=O)-O-t-Bu (Ishii para 73 and 76), resulting in the triazine compound of claim 4, to generate the final polymer useful for lens applications. Regarding claims 7-8, Ishii teaches (reference claim 6) a liquid composition of the triazine ring containing polymer in a solvent such as N-methyl-2-pyrrolidone (para [0112]), corresponding to the nitrogen-containing polar organic solvent. In the absence of a photosensitive compound, the liquid composition would be non-photosensitive. Conclusion Any inquiry concerning this communication or earlier communications from the examiner should be directed to Surbhi M Du whose telephone number is (571)272-9960. The examiner can normally be reached M-F 9:00 am to 5:00pm. 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, 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. /S.M.D./ Examiner Art Unit 1765 /JOHN M COONEY/Primary Examiner, Art Unit 1765
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Prosecution Timeline

Jul 20, 2023
Application Filed
Jun 12, 2026
Non-Final Rejection mailed — §103 (current)

Precedent Cases

Applications granted by this same examiner with similar technology

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2y 11m to grant Granted May 12, 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
68%
Grant Probability
95%
With Interview (+27.8%)
3y 2m (~2m remaining)
Median Time to Grant
Low
PTA Risk
Based on 117 resolved cases by this examiner. Grant probability derived from career allowance rate.

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