Prosecution Insights
Last updated: July 17, 2026
Application No. 18/268,573

MODIFIED VINYL ALCOHOL POLYMER, MODIFIED VINYL ALCOHOL POLYMER PRODUCTION METHOD, PARTICLES, AQUEOUS SOLUTION, COATING LIQUID, COATED ARTICLE, MOLDED PRODUCT, RELEASE PAPER, DISPERSANT, VINYL POLYMER PRODUCTION METHOD, AND MIXTURE

Non-Final OA §102§103
Filed
Jun 20, 2023
Priority
Dec 24, 2020 — JP 2020-215063 +3 more
Examiner
WU, ANDREA
Art Unit
1763
Tech Center
1700 — Chemical & Materials Engineering
Assignee
Kuraray Co., Ltd.
OA Round
1 (Non-Final)
70%
Grant Probability
Favorable
1-2
OA Rounds
2m
Est. Remaining
92%
With Interview

Examiner Intelligence

Grants 70% — above average
70%
Career Allowance Rate
87 granted / 125 resolved
+4.6% vs TC avg
Strong +22% interview lift
Without
With
+22.2%
Interview Lift
resolved cases with interview
Typical timeline
3y 3m
Avg Prosecution
33 currently pending
Career history
168
Total Applications
across all art units

Statute-Specific Performance

§103
88.4%
+48.4% vs TC avg
§102
4.8%
-35.2% vs TC avg
§112
2.1%
-37.9% vs TC avg
Black line = Tech Center average estimate • Based on career data from 125 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 . Applicant’s election without traverse of Group I, claims 1-3, 8-9, and 17 in the reply filed on March 24, 2026 is acknowledged. Claims 4-7, 10-16, and 19-27 are withdrawn from further consideration pursuant to 37 CFR 1.142(b) as being drawn to a nonelected invention, there being no allowable generic or linking claim.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 March 24, 2026. Claim Analysis Summary of Claim 1: A modified vinyl alcohol polymer comprising a structural unit represented by the following formula (1), and having a water-insoluble content of 1,000 ppm or less, PNG media_image1.png 172 220 media_image1.png Greyscale wherein, in the formula (1), X, Y, and Z each independently represent an alkyl group having 1 to 20 carbon atoms, an alkenyl group having 2 to 20 carbon atoms, a phenyl group, a benzyl group, a vinylphenyl group, a halogenated alkyl group having 1 to 20 carbon atoms, a halogenated phenyl group, an aminoalkyl group having 1 to 20 carbon atoms, a mercaptoalkyl group having 1 to 20 carbon atoms, an ureidoalkyl group having 2 to 20 carbon atoms, an isocyanate alkyl group having 2 to 8 carbon atoms, a group having 3 to 20 carbon atoms and comprising an epoxy group, a group having 3 to 20 carbon atoms and comprising an acrylamide group, a group having 4 to 20 carbon atoms and comprising a methacrylamide group, an acetoxy group, or a group represented by -(CH2)n-O-R1 (wherein R1 represents a hydrogen atom, an alkali metal atom, an alkaline earth metal atom, an alkyl group having 1 to 20 carbon atoms, an alkenyl group having 2 to 20 carbon atoms, an acryloyl group, a methacryloyl group, or a glycidyl group; and n represents an integer of 0 to 6). 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. Claims 1-3 and 8-9 are rejected under 35 U.S.C. 102(a)(1) as being anticipated by Nishii (US 20170137600 as listed on IDS dated October 3, 2023). Regarding claim 1, Nishii discloses in Example 1-13 a modified polyvinyl alcohol obtained by reacting PVA particles dissolved in DMSO, then reacted with stearyl acid and a silane coupling agent 3-methacryloxypropyltrimethyoxysilane were added ([0087] Table 1), thereby reading on formula (1) wherein X and Y are a group represented by (CH₂)ₙ-O-R¹, wherein n is 0 and R¹ is an alkyl group having 2 carbons, and Z is a group represented by (CH₂)ₙ-O-R¹, wherein n is 3 and R¹ is a methacryloyl group. Nishii is silent on the polymer having a water-insoluble content as recited in the instant claim. However, water solubility of the polymer is dependent on the structure of the polymer. Nishii discloses a substantially identical polymer as claimed in the instant claim. Therefore, one of ordinary skill in the art would have considered the water-insoluble content of the modified vinyl alcohol polymer to be inherent. Regarding claim 2, Nishii discloses in Example 1-13 the modified polyvinyl alcohol has a content of 1 mol% of the structural unit represent by the above formula (1), thereby lying inside the claimed range. Regarding claim 3, Nishii discloses the modified polyvinyl alcohol of Example 1-13 comprises a structural unit reading on formula (1) wherein X and Y are a group represented by (CH₂)ₙ-O-R¹, wherein n is 0 and R¹ is an alkyl group having 2 carbons, and Z is a group represented by (CH₂)ₙ-O-R¹, wherein n is 3 and R¹ is a methacryloyl group as recited in the rejection for claim 1. Therefore, the content of structural unit represented by formula (1) with respect to the total structural units comprising a silicon atom is 100 mol%, thereby lying within the claimed range. Regarding claim 8, Nishii discloses particles of modified polyvinyl alcohol in Example 1-13 as recited in the rejection for claim 1, thereby anticipating the instant claim. Regarding claim 9, Nishii is silent on the dispersity A of the silicone atoms as recited in the instant claim. However, dispersity of the polymer is dependent on the structure of the polymer. Nishii discloses a substantially identical polymer as claimed in the instant claim. Therefore, one of ordinary skill in the art would have considered the dispersity A of the modified vinyl alcohol polymer to be inherent. 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. Claim 17 is rejected under 35 U.S.C. 103 as being unpatentable over Nishii (US 20170137600 as listed on IDS dated October 3, 2023). The modified vinyl alcohol polymer of claim 1 is incorporated herein by reference. Regarding claim 17, Nishii teaches the modified vinyl alcohol polymer is used to form a coating on the outer surface of a tire by in-mold forming [0059], thereby reading on the molded product of the instant claim. Conclusion Any inquiry concerning this communication or earlier communications from the examiner should be directed to ANDREA WU whose telephone number is (571)272-0342. The examiner can normally be reached M F 8 - 5. 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, Joseph Del Sole can be reached at (571) 272-1130. 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. /ANDREA WU/Examiner, Art Unit 1763 /CATHERINE S BRANCH/Primary Examiner, Art Unit 1763
Read full office action

Prosecution Timeline

Jun 20, 2023
Application Filed
Apr 20, 2026
Non-Final Rejection mailed — §102, §103 (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
70%
Grant Probability
92%
With Interview (+22.2%)
3y 3m (~2m remaining)
Median Time to Grant
Low
PTA Risk
Based on 125 resolved cases by this examiner. Grant probability derived from career allowance rate.

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