Prosecution Insights
Last updated: April 19, 2026
Application No. 18/274,769

STRUCTURAL POLYURETHANE ADHESIVE

Non-Final OA §103
Filed
Jul 28, 2023
Examiner
LEONARD, MICHAEL L
Art Unit
1763
Tech Center
1700 — Chemical & Materials Engineering
Assignee
Mitsui Chemicals Inc.
OA Round
1 (Non-Final)
64%
Grant Probability
Moderate
1-2
OA Rounds
3y 3m
To Grant
72%
With Interview

Examiner Intelligence

Grants 64% of resolved cases
64%
Career Allow Rate
839 granted / 1319 resolved
-1.4% vs TC avg
Moderate +8% lift
Without
With
+8.0%
Interview Lift
resolved cases with interview
Typical timeline
3y 3m
Avg Prosecution
64 currently pending
Career history
1383
Total Applications
across all art units

Statute-Specific Performance

§101
0.6%
-39.4% vs TC avg
§103
50.5%
+10.5% vs TC avg
§102
19.2%
-20.8% vs TC avg
§112
18.7%
-21.3% vs TC avg
Black line = Tech Center average estimate • Based on career data from 1319 resolved cases

Office Action

§103
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 § 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 1-6 are rejected under 35 U.S.C. 103 as being unpatentable over JP-08/169930 to Murayama et al. (Cited on IDS). As to claims 1-6, Murayama discloses a adhesives for binding fiber bundles to housings or for electrical appliances (0001, structural adhesive) comprising a polyisocyanate component and a polyol component wherein the polyisocyanate component comprises 80/20 of a component (a) and (b) and 90/10 of (a)+(b) / (c) (0021-0022, Table) wherein component (a) is an NCO-terminated prepolymer derived from toluene diisocyanate and a macropolyols (0031-0033), component (b) is a carbodiimide-modified MDI (0036-0037, and component (c) is an NCO-terminated prepolymer derived from hexamethylene diisocyanate and 1,3-butanediol or 2-butyl-2-ethyl-1,3-propanediol (0040, 0042). Murayama discloses a polyol component comprising castor oil and 2-hydroxypropyl ethylene diamine (0062-0064). Murayama further discloses wherein the polyol used to modify HDI is selected from polytetramethylene glycol, polypropylene glycol, or polybutylene adipate (0020) and has molecular weights that range from 60 to 5,000 (0020). At the time of filing it would have been obvious to substitute the short chain diols used in the examples of Murayama with the high molecular weight polyether polyols when modifying HDI to arrive at an adhesive with the desired properties. The rationale is based on the fact that Murayama teaches the substitution as an alternative to the low molecular weight diols. It is noted that the use of patents as references is not limited to what the patentees describe as their own inventions or to the problems with which they are concerned. A reference may be relied upon for all that it would have reasonably suggested to one having ordinary skill in the art, including non-preferred embodiments (MPEP 2121(II)). Further, disclosed examples and preferred embodiments do not constitute a teaching away from a broader disclosure or non-preferred embodiments (MPEP 2123 (II)). Conclusion Any inquiry concerning this communication or earlier communications from the examiner should be directed to MICHAEL L LEONARD whose telephone number is (571)270-7450. The examiner can normally be reached M - F 7:00-4:00. 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. /MICHAEL L LEONARD/Primary Examiner, Art Unit 1763
Read full office action

Prosecution Timeline

Jul 28, 2023
Application Filed
Dec 03, 2025
Non-Final Rejection — §103 (current)

Precedent Cases

Applications granted by this same examiner with similar technology

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CROSSLINKING AGENT COMPOSITION FOR WATER-COMPATIBLE RESIN, AND WATER-COMPATIBLE RESIN COMPOSITION
2y 5m to grant Granted Apr 14, 2026
Patent 12583819
POLYTHIOL COMPOSITION, OPTICAL POLYMERIZABLE COMPOSITION, AND OPTICAL PRODUCT
2y 5m to grant Granted Mar 24, 2026
Patent 12583993
RECYCLED POLYOL
2y 5m to grant Granted Mar 24, 2026
Patent 12570789
CURABLE COMPOUND, CURABLE COMPOSITION, AND METHOD FOR PRODUCING CURABLE COMPOSITION
2y 5m to grant Granted Mar 10, 2026
Patent 12565561
HEAT-SHRINKABLE POLYESTER-BASED FILM, HEAT-SHRINKABLE LABEL, AND PACKAGING BODY
2y 5m to grant Granted Mar 03, 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
64%
Grant Probability
72%
With Interview (+8.0%)
3y 3m
Median Time to Grant
Low
PTA Risk
Based on 1319 resolved cases by this examiner. Grant probability derived from career allow rate.

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