Prosecution Insights
Last updated: April 19, 2026
Application No. 17/655,077

POLYESTER FILM FOR WINDOW ATTACHMENT, AND POLYESTER FILM LAYERED BODY FOR WINDOW ATTACHMENT

Non-Final OA §112
Filed
Mar 16, 2022
Examiner
KHAN, TAHSEEN
Art Unit
1781
Tech Center
1700 — Chemical & Materials Engineering
Assignee
Mitsubishi Chemical Corporation
OA Round
5 (Non-Final)
61%
Grant Probability
Moderate
5-6
OA Rounds
3y 4m
To Grant
83%
With Interview

Examiner Intelligence

Grants 61% of resolved cases
61%
Career Allow Rate
564 granted / 924 resolved
-4.0% vs TC avg
Strong +22% interview lift
Without
With
+22.4%
Interview Lift
resolved cases with interview
Typical timeline
3y 4m
Avg Prosecution
44 currently pending
Career history
968
Total Applications
across all art units

Statute-Specific Performance

§101
0.2%
-39.8% vs TC avg
§103
74.7%
+34.7% vs TC avg
§102
9.3%
-30.7% vs TC avg
§112
6.3%
-33.7% vs TC avg
Black line = Tech Center average estimate • Based on career data from 924 resolved cases

Office Action

§112
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 . Continued Examination Under 37 CFR 1.114 A request for continued examination under 37 CFR 1.114, including the fee set forth in 37 CFR 1.17(e), was filed in this application after final rejection. Since this application is eligible for continued examination under 37 CFR 1.114, and the fee set forth in 37 CFR 1.17(e) has been timely paid, the finality of the previous Office action has been withdrawn pursuant to 37 CFR 1.114. Applicant's submission filed on 10/31/2025 has been entered. Response to Amendment The Examiner acknowledges the remarks and amendments filed on 10/02/25. Claims 5, 8, 10, 15, and 16 have been canceled. Claim 1 has been amended. Claims 1-4, 6, 7, 9, 11-14, 17-21 are pending. Claim Rejections - 35 USC § 112 The following is a quotation of the first paragraph of 35 U.S.C. 112(a): (a) IN GENERAL.—The specification shall contain a written description of the invention, and of the manner and process of making and using it, in such full, clear, concise, and exact terms as to enable any person skilled in the art to which it pertains, or with which it is most nearly connected, to make and use the same, and shall set forth the best mode contemplated by the inventor or joint inventor of carrying out the invention. The following is a quotation of the first paragraph of pre-AIA 35 U.S.C. 112: The specification shall contain a written description of the invention, and of the manner and process of making and using it, in such full, clear, concise, and exact terms as to enable any person skilled in the art to which it pertains, or with which it is most nearly connected, to make and use the same, and shall set forth the best mode contemplated by the inventor of carrying out his invention. Claim 1 is rejected under 35 U.S.C. 112(a) or 35 U.S.C. 112 (pre-AIA ), first paragraph, as failing to comply with the written description requirement. The claim(s) contains subject matter which was not described in the specification in such a way as to reasonably convey to one skilled in the relevant art that the inventor or a joint inventor, or for applications subject to pre-AIA 35 U.S.C. 112, the inventor(s), at the time the application was filed, had possession of the claimed invention. Currently amended Claim 1 reads as follows: PNG media_image1.png 430 614 media_image1.png Greyscale The Examiner was unable to find adequate support in the Specification for what seems to be the use of two different polyesters in the formation of polyester layer (A). The red arrow is pointing towards a polyester that is a component of the “master batch”. The yellow arrow is pointing to what seems like is a second polyester that is free of the halogen-free blue dye and pigment. As such, the claim is suggesting that the polyester layer (A) is formed by the use of two different polyesters. However, the Examiner was unable to find support for this in the Specification or original claims. Additionally, lines 4-5 of Claim 1 states that just the halogen-free blue dye and pigment were melted and blended with each other, but then lines 8-10 state that the melting and mixing were actually done with a polyester too. The Examiner is uncertain if this is a secondary step or if it’s referring to the same melting and mixing stated in lines 4-5. The Examiner suggests amending the claims to clear up the ambiguity to the amount of steps of melting and mixing that are being claimed. Response to Arguments Applicant’s arguments, filed10/31/2005, with respect to the rejection(s) of all claim(s) under Masuda 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 35 USC 112. Conclusion Any inquiry concerning this communication or earlier communications from the examiner should be directed to TAHSEEN KHAN whose telephone number is (571)270-1140. The examiner can normally be reached Mondays-Saturdays 08:00AM-10:00PM. 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, Frank Vineis can be reached at 5712701547. 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. /TAHSEEN KHAN/Primary Examiner, Art Unit 1781 January 23, 2026
Read full office action

Prosecution Timeline

Mar 16, 2022
Application Filed
Feb 05, 2024
Non-Final Rejection — §112
Jun 03, 2024
Response Filed
Sep 03, 2024
Final Rejection — §112
Dec 03, 2024
Applicant Interview (Telephonic)
Dec 12, 2024
Examiner Interview Summary
Jan 27, 2025
Request for Continued Examination
Jan 27, 2025
Response after Non-Final Action
Jan 28, 2025
Response after Non-Final Action
Apr 02, 2025
Non-Final Rejection — §112
Jul 03, 2025
Response Filed
Jul 08, 2025
Final Rejection — §112
Sep 24, 2025
Examiner Interview Summary
Sep 24, 2025
Applicant Interview (Telephonic)
Oct 02, 2025
Response after Non-Final Action
Oct 31, 2025
Request for Continued Examination
Nov 04, 2025
Response after Non-Final Action
Jan 23, 2026
Non-Final Rejection — §112 (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

5-6
Expected OA Rounds
61%
Grant Probability
83%
With Interview (+22.4%)
3y 4m
Median Time to Grant
High
PTA Risk
Based on 924 resolved cases by this examiner. Grant probability derived from career allow rate.

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