Prosecution Insights
Last updated: October 02, 2026
Application No. 19/241,027

BASE MATERIAL AND METHOD FOR PRODUCING STRUCTURE INCLUDING PHASE-SEPARATED STRUCTURE

Non-Final OA §102
Filed
Jun 17, 2025
Priority
Jun 27, 2024 — JP 2024-104098
Examiner
LISTVOYB, GREGORY
Art Unit
1765
Tech Center
1700 — Chemical & Materials Engineering
Assignee
Tokyo Ohka Kogyo Co., Ltd.
OA Round
1 (Non-Final)
67%
Grant Probability
Favorable
1-2
OA Rounds
1y 9m
Est. Remaining
96%
With Interview

Examiner Intelligence

Grants 67% — above average
67%
Career Allowance Rate
814 granted / 1217 resolved
+1.9% vs TC avg
Strong +30% interview lift
Without
With
+29.6%
Interview Lift
resolved cases with interview
Typical timeline
3y 0m
Avg Prosecution
43 currently pending
Career history
1243
Total Applications
across all art units

Statute-Specific Performance

§101
0.3%
-39.7% vs TC avg
§103
58.8%
+18.8% 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 1217 resolved cases

Office Action

§102
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 Election/Restrictions Claim 5-8 withdrawn from further consideration pursuant to 37 CFR 1.142(b) as being drawn to a nonelected method for producing a structure, there being no allowable generic or linking claim. Election was made without traverse in the reply filed on 6/23/2026. Applicant’s election without traverse of a base material (claims 1-4) in the reply filed on 6/23/2026 is acknowledged. 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 1-4 are rejected under 35 U.S.C. 102(a)(1) as being anticipated by Yamano et al (US 20160194524). Yamano teaches phase separation layer containing a block copolymer (see 0004) having the following blocks Nx-1 and Ny-1-1: PNG media_image1.png 140 338 media_image1.png Greyscale PNG media_image2.png 138 352 media_image2.png Greyscale in formula (Nx-1), R represents a hydrogen atom, an alkyl group of 1 to 5 carbon atoms or a halogenated alkyl group of 1 to 5 carbon atoms; R1 represents a halogen atom, or a linear, branched or cyclic hydrocarbon group of 1 to 20 carbon atoms optionally containing an oxygen atom, a halogen atom or a silicon atom, or a combination of the linear, branched or cyclic hydrocarbon group; and n represents an integer of 0 to 5; in formula Ny-1-1 R represents a hydrogen atom, an alkyl group of 1 to 5 carbon atoms or a halogenated alkyl group of 1 to 5 carbon atoms and wherein the amount of the structural unit (Ny) within the resin component (N) is 5 mol % or less. (see claims 4, 5 and 6). Regarding limitation of claim 1, where no alkyl methacrylate units are present, Yamano discloses acrylic acid or acrylate ester as monomers for block NY-1-1 (see 0055-0056). Thus, all limitations of claims 1-4 are met. Claims 1-4 are rejected under 35 U.S.C. 102(a)(1) as being anticipated by Senzaki et al. (US 20130243958). Yamano teaches phase separation layer containing a polystyrene-polyacrylic acid block copolymer (see claim 19), where an amount of the structural unit having an aromatic ring (i.e. polystyrene, PS ), based on the combined total of all structural units constituting the resin component is 10 to 95 mol% copolymer (see claim 7). Yamano discloses that PS constitutes 85-92% mol and polymethacrylic acid present at 3-15% mol (see Table 1 , Examples 1, 3-6 and 8-9). Note that Examples above disclose PS- PMMA block copolymer. However, Yamano teaches that polymethacrylic and polyacrylic acid blocks are totally interchangeable (see 0026). 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

Jun 17, 2025
Application Filed
Aug 21, 2026
Non-Final Rejection mailed — §102 (current)

Precedent Cases

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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
67%
Grant Probability
96%
With Interview (+29.6%)
3y 0m (~1y 9m remaining)
Median Time to Grant
Low
PTA Risk
Based on 1217 resolved cases by this examiner. Grant probability derived from career allowance rate.

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