Prosecution Insights
Last updated: May 29, 2026
Application No. 17/468,747

FREE RADICAL POLYMERIZABLE ADHESION-PROMOTING INTERLAYER COMPOSITIONS AND METHODS OF USE

Non-Final OA §103
Filed
Sep 08, 2021
Priority
Dec 19, 2019 — divisional of 11/173,692
Examiner
LIU, ZHEN
Art Unit
1767
Tech Center
1700 — Chemical & Materials Engineering
Assignee
Prc-Desoto International Inc.
OA Round
4 (Non-Final)
42%
Grant Probability
Moderate
4-5
OA Rounds
0m
Est. Remaining
88%
With Interview

Examiner Intelligence

Grants 42% of resolved cases
42%
Career Allowance Rate
58 granted / 138 resolved
-23.0% vs TC avg
Strong +46% interview lift
Without
With
+45.8%
Interview Lift
resolved cases with interview
Typical timeline
3y 5m
Avg Prosecution
50 currently pending
Career history
236
Total Applications
across all art units

Statute-Specific Performance

§103
92.0%
+52.0% vs TC avg
§102
7.0%
-33.0% vs TC avg
§112
0.4%
-39.6% vs TC avg
Black line = Tech Center average estimate • Based on career data from 138 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 . Claim Rejections - 35 USC § 103 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 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. This application currently names joint inventors. In considering patentability of the claims the examiner presumes that the subject matter of the various claims was commonly owned as of the effective filing date of the claimed invention(s) absent any evidence to the contrary. Applicant is advised of the obligation under 37 CFR 1.56 to point out the inventor and effective filing dates of each claim that was not commonly owned as of the effective filing date of the later invention in order for the examiner to consider the applicability of 35 U.S.C. 102(b)(2)(C) for any potential 35 U.S.C. 102(a)(2) prior art against the later invention. Claims 1, 3, 4, 7 are rejected under 35 U.S.C. 103 as being unpatentable over Yang (CN101290473, herein Yang, a machine translation is being used for citation purpose). Regarding Claims 1, 3, 4, 7, Yang teaches photosensitive resin composition comprising: 6% to 60% by weight of a photocurable resin, 0.05% to 10% by weight of a photo initiator and 32% to 85% by weight of an organic solvent [0073], in order to improve adhesion [0023], which comprising: acrylic resin containing both unsaturated groups capable of free radical polymerization [0071] such as dipropylene glycol diacrylate [0023] which is multifunctional (meth)acrylate and reads on the ethylenically unsaturated free radical polymerizable compound; photoinitiators, 2,4,6-trimethylbenzoyldiphenylphosphine oxide [0048]; 2-hydroxy-2-methyl-1-p-hydroxyethyl ether phenyl acetone [0056] both read on the free radical initiators; 32%-85% organic solvent [0076], isopropanol [0047] which reads on volatile organic solvent. It would have been obvious to someone of ordinary skill in the art before the effective filing date of the claimed invention to have utilized amounts 0.05% to 10% by weight of a photo initiator with a reasonable expectation of success, and would have been motivated to do as Yang discloses that such amounts are suitable for the invention. Regarding Claim 8, Yang teaches photosensitive resin composition is used to improving the toughness and strength of the film layer or the spacer [0071], which reads on adhesion-promoting interlayer. Claim 6 is rejected under 35 U.S.C. 103 as being unpatentable over Yang (CN101290473, herein Yang, a machine translation is being used for citation purpose) as applied in the claim 1 above, in the view of Sawant (US20060270796, herein Sawant). Regarding Claim 6, Yang teaches the adhesion-promoting composition as set forth above in claim 1. Yang teaches acrylic resin containing both unsaturated groups capable of free radical polymerization [0071] such as dipropylene glycol diacrylate [0023] which is multifunctional (meth)acrylate and reads on the ethylenically unsaturated free radical polymerizable compound. Yang is silent on the polythiol, however, Sawant teaches polymeric polythiols [0033]. Yang and Sawant are considered to be analogous to the claimed invention because they are in the same field of endeavor, that of the photocurable adhesion resin composition formation toward processability and flexibility. Therefore, it would have been obvious to someone of ordinary skill in the art before the effective filing date of add the polymeric polythiols [0033] into the composition, and the motivation to do so would have been the curable compositions of the present invention can exhibit good low temperature flexibility [0104]. Claim 9 is rejected under 35 U.S.C. 103 as being unpatentable over Yang (CN101290473, herein Yang, a machine translation is being used for citation purpose) as applied to claim 1 above, in the view of Sawant (US20060270796, herein Sawant) and Virnelson (US20170044399, herein Virnelson). Regarding Claim 9, Yang teaches the adhesion-promoting composition as set forth above in claim 1. Yang does not teach the drying the applied adhesion-promoting composition, however, Sawant teaches the evacuation of the reaction mixture at 70° C./7-8 mmHg for 0.5 hour [0110] indicating drying of the adhesion composition. Yang and Sawant are considered to be analogous to the claimed invention because they are in the same field of endeavor, that of the photocurable adhesion resin composition formation toward processability and flexibility. Therefore, it would have been obvious to someone of ordinary skill in the art before the effective filing date of add the evacuation of the reaction mixture at 70° C./7-8 mmHg for 0.5 hour [0110] into the product formation, and the motivation to do so would have been the lead to the composition product exhibit good low temperature flexibility [0104]. Yang is silent on sulfur-containing sealant layer; however, Virnelson teaches sulfur-containing prepolymer for sealant applications [0190]. Virnelson further teaches that following application to the curable coating, the barrier coating can be exposed to UV radiation to cure the barrier coating [0195] indicating as claimed free radical polymerization of the sulfur-containing sealant composition to cure the sulfur-containing sealant composition. Yang and Virnelson are considered to be analogous to the claimed invention because they are in the same field of endeavor, that of the photocurable acrylate-based adhesion resin composition formation. Therefore, it would have been obvious to someone of ordinary skill in the art before the effective filing date of the claimed invention to add sulfur-containing prepolymer for sealant applications [0190]. following application to the curable coating, the barrier coating can be exposed to UV radiation to cure the barrier coating [0195] into the product formation, because doing so would further achieve the optimized product process with desired properties of “cured sealants prepared using the sulfur-containing prepolymers maintain acceptable properties such as adhesion, tensile strength, elongation, and hardness, following exposure to aviation fuel and/or high temperature” [0069]. Response to Arguments Applicant’s arguments, filed 8/25/2025, with respect to the rejection(s) of claim(s) 1 under 35 USC § 103 have been fully considered and are persuasive. Therefore, the rejection has been withdrawn. However, upon further consideration, a new ground(s) of rejection is made in view of Yang (CN101290473, herein Yang, a machine translation is being used for citation purpose). Yang teaches the adhesion-promoting composition and the ranges as set forth above in the new rejection. Correspondence Any inquiry concerning this communication or earlier communications from the examiner should be directed to Zhen Liu whose telephone number is (703)756-4782. The examiner can normally be reached Monday-Friday 9:00 am - 5:00 pm. 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, Mark Eashoo can be reached on (571)272-1197. 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. /Z.L./ Examiner, Art Unit 1767 /MARK EASHOO/Supervisory Patent Examiner, Art Unit 1767
Read full office action

Prosecution Timeline

Show 1 earlier event
Apr 10, 2024
Non-Final Rejection mailed — §103
Jul 09, 2024
Response Filed
Oct 01, 2024
Final Rejection mailed — §103
Feb 03, 2025
Request for Continued Examination
Feb 04, 2025
Response after Non-Final Action
Feb 24, 2025
Non-Final Rejection mailed — §103
Aug 25, 2025
Response Filed
Dec 17, 2025
Non-Final Rejection mailed — §103 (current)

Precedent Cases

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OSIDIC DISPERSING AGENT
5y 0m to grant Granted May 05, 2026
Study what changed to get past this examiner. Based on 5 most recent grants.

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Prosecution Projections

4-5
Expected OA Rounds
42%
Grant Probability
88%
With Interview (+45.8%)
3y 5m (~0m remaining)
Median Time to Grant
High
PTA Risk
Based on 138 resolved cases by this examiner. Grant probability derived from career allowance rate.

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