Prosecution Insights
Last updated: April 19, 2026
Application No. 17/853,598

POLYMER FILM

Final Rejection §103
Filed
Jun 29, 2022
Examiner
DICUS, TAMRA
Art Unit
1787
Tech Center
1700 — Chemical & Materials Engineering
Assignee
Chang Chun Petrochemical Co. Ltd.
OA Round
6 (Final)
30%
Grant Probability
At Risk
7-8
OA Rounds
4y 4m
To Grant
51%
With Interview

Examiner Intelligence

Grants only 30% of cases
30%
Career Allow Rate
187 granted / 633 resolved
-35.5% vs TC avg
Strong +21% interview lift
Without
With
+21.1%
Interview Lift
resolved cases with interview
Typical timeline
4y 4m
Avg Prosecution
60 currently pending
Career history
693
Total Applications
across all art units

Statute-Specific Performance

§101
0.3%
-39.7% vs TC avg
§103
58.0%
+18.0% vs TC avg
§102
14.2%
-25.8% vs TC avg
§112
17.7%
-22.3% vs TC avg
Black line = Tech Center average estimate • Based on career data from 633 resolved cases

Office Action

§103
The present application, filed on or after March 16, 2013, is being examined under the first inventor to file provisions of the AIA . DETAILED ACTION Applicants' arguments have been fully considered. Rejections and/or objections not reiterated from previous office actions are hereby withdrawn due to Applicant's amendments and/or arguments. The following rejections and/or objections are either reiterated or newly applied. Claim Objections Claims 1-5, 7-8, and 11-19 are objected to because of the following informalities in claim 1, line 14: the language “and satisfies one of the following…” is not an acceptable Markush group listing. One acceptable form of alternative expression, which is commonly referred to as a Markush group, recites members as being "selected from the group consisting of A, B and C." See Ex parte Markush, 1925 C.D. 126 (Comm’r Pat. 1925). Suitable language to include would be “wherein the X are selected from the group consisting of”. Appropriate correction is required. Claim Rejections - 35 USC § 103 The following is a quotation of 35 U.S.C. 103(a) which forms the basis for all obviousness rejections set forth in this Office action: (a) A patent may not be obtained though the invention is not identically disclosed or described as set forth in section 102 of this title, if the differences between the subject matter sought to be patented and the prior art are such that the subject matter as a whole would have been obvious at the time the invention was made to a person having ordinary skill in the art to which said subject matter pertains. Patentability shall not be negatived by the manner in which the invention was made. Claims 1-5, 7-8, and 11-19 are rejected under 35 U.S.C. 103(a) as being unpatentable over US 20170136742 A1 to Oota et al. in view of US 4020217 to Karasudani et al. Re claims 1-5, 7-8, and 11-19, Oota essentially teaches the claimed invention wherein a polymer film [42] of polyvinyl acetal resin and a plasticizer ([52], Table 1) is in each of a first and second layer (Fig. 3 and associated text). The properties as claimed are not explicitly taught; however the layers and their properties are inherent as the same composition is taught (re claims 1-5, 13-18). Oota teaches overlapping ranges (re claims 6-7, 9-10, [58] 30-100 parts plasticizer overlaps applicant’s range of 30-60 parts (second layer) and 50-90 parts (first layer)), [49, 72] 100 parts PVA, [48] aldehyde (greater than 12% as 100% is used), polymerization degree is 500 -4000 [2300 dp - 117] (overlapping 2000 to 4000) and [44-45] [42-50], Oota and 10-32 mol% hydroxyl group (overlapping applicant’s range of greater than 26 mol%). Oota also teaches thicknesses of less than 100 microns to 3000 microns ( [25-28, 39], Abstract) effecting luminescence (re claim 19). Oota teaches the three-layer construction first upper second layer 32/film 31/second lower 33, Fig. 3, [37-39]. In the case where the claimed ranges “overlap or lie inside ranges disclosed by the prior art” a prima facie case of obviousness exists. In reWertheim, 541 F.2d 257, 191 USPQ 90 (CCPA 1976); In reWoodruff, 919 F.2d 1575, 16 USPQ2d 1934 (Fed. Cir. 1990). See MPEP 2144.05. It would have been obvious to one of ordinary skill in the art at the time the invention was made to have selected from the overlapping portion of the range taught by the reference because overlapping ranges have been held to establish prima facie obviousness. MPEP 2144.05. Further thickness of the individual layers and overall laminate is within the skilled artisan to have modified it would have been obvious to one of ordinary skill in the art to use interlayers and films with thickness, including that presently claimed, in order to produce aforesaid layers with effective functionality of luminescence, sound insulation and high frequency. Further to claim 12, the film and what happens when is directed to intended use and suggestive language. Oota doesn’t disclose the exact range of degree of acetalization of 52.7 to 69.7 mol% as claimed. It would have been obvious to one of ordinary skill in the art at the time the invention was made to have selected from the overlapping portion of the range taught by the reference because overlapping ranges have been held to establish prima facie obviousness. MPEP 2144.05. Further by substitution, use or addition of the acetylation degree of Shimamoto in the film of Oota, increasing the degree aids in achieving sound insulation, same as applicant. The properties not explicit are found inherent as the materials are identical, the properties are inherent (i.e. loss factor). Claim 8 is rejected under 35 U.S.C. 103(a) as being unpatentable over US 20170136742 A1 to Oota et al. in view of US 4020217 to Karasudani et al. and further in view of JP 2020050713 (JP ‘713). Oota is relied upon above. Re claim 8, Oota doesn’t teach bulk density as claimed. However, JP ‘713 teaches bulk density that overlaps that claimed JP ‘713. The reference discloses polyvinyl acetal with bulk density of 0.15 g/m3 or more in order to produce polyvinyl acetal that has excellent transportability (0056). It would have been obvious to one having ordinary skill in the art at the time of the effective filing date and modify the PVA of Oota with the specific PVA of JP ‘713 for transportability. Response to Arguments Applicant's arguments 09/11/25 have been fully considered but they are moot as they are not convincing for the following reasons. Applicant points to the specification and comparative examples to argue the loss factor parameter and other properties are not inherent; while the exact same composition is used, and therefore the properties are deemed inherent absent convincing evidence to the contrary. Applicant argues that the cited prior art does not disclose the loss factors technical feature and does not recognize the criticality the polyvinyl acetal resin technical feature. As evidence to support this position, applicant points to the examples in the present specification as well as the Reference Example in the Declaration filed 09/11/2025. However, the data is not persuasive given that it is not commensurate in scope with the scope of the present claims. Specifically, the data in both the specification and the Declaration use specific type of polyvinyl acetal and specific type of plasticizer each in specific amounts while the present claims broadly encompass any polyvinyl acetal and any plasticizer with no data at the upper and lower end points of the claimed amount of plasticizer. Further, the data in both the specification and the Declaration use polyvinyl acetal with specific degree of acetylation, specific degree of polymerization, and specific hydroxyl group content while the claims recite broader range for each of the degree of acetylation, degree of polymerization, and hydroxyl group content. There is no data at the upper and lower end points of the claimed degree of acetylation, the degree of polymerization (with the exception of data at 2400), and the hydroxyl group content (with the exception of data at 23.8 mol%). While it is agreed that there is no explicit disclosure in the prior art of the loss factors, within the overlapping ranges, it is the examiner’s position that such loss factors would necessarily inherently be present. Conclusion The prior art made of record and not relied upon is considered pertinent to applicant's disclosure. US 20130323516 A1 to Shimamoto et al. Shimamoto teaches overlapping ranges of degree of acetalization in Fig. 3, [37] a sound-insulating property in a high frequency range can be enhanced. US 2014/0227537 to Shimamoto et al. teaches essentially teaches (see Fig. 1 and associated text) the claimed invention [0016] save the exact ranges, including the use of successive portions polyvinyl acetates of similar polymerization degree ranges; and further teaching an interlayer exact first, second, and third polyvinyl acetal resins and layers ([0043]) with an overlapping amount of plasticizer ([0013-0017], [0023]) of inclusion of parts by weight for improvement of sound insulation property. Shimamoto discusses the problem of using too much plasticizer [0013] in that the use of the excessive amount of the plasticizer, however, may cause the plasticizer to bleed out to the surface of the interlayer film. See examples 1-14 and tables. Applicant's amendment necessitated the new ground(s) of rejection presented in this Office action. Accordingly, THIS ACTION IS MADE FINAL. See MPEP § 706.07(a). Applicant is reminded of the extension of time policy as set forth in 37 CFR 1.136(a). A shortened statutory period for reply to this final action is set to expire THREE MONTHS from the mailing date of this action. In the event a first reply is filed within TWO MONTHS of the mailing date of this final action and the advisory action is not mailed until after the end of the THREE-MONTH shortened statutory period, then the shortened statutory period will expire on the date the advisory action is mailed, and any nonprovisional extension fee (37 CFR 1.17(a)) pursuant to 37 CFR 1.136(a) will be calculated from the mailing date of the advisory action. In no event, however, will the statutory period for reply expire later than SIX MONTHS from the mailing date of this final action. Any inquiry concerning this communication or earlier communications from the examiner should be directed to TAMRA L. DICUS whose telephone number is (571)272-2022. The examiner can normally be reached M-F 8:00 am 4:00 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, Callie Shosho can be reached on 571-272-1123. 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. TAMRA L. DICUS Primary Examiner Art Unit 1787 /TAMRA L. DICUS/Primary Examiner, Art Unit 1787
Read full office action

Prosecution Timeline

Jun 29, 2022
Application Filed
Jun 16, 2023
Non-Final Rejection — §103
Sep 25, 2023
Response Filed
Jan 04, 2024
Final Rejection — §103
Jun 06, 2024
Response after Non-Final Action
Jul 05, 2024
Request for Continued Examination
Jul 09, 2024
Response after Non-Final Action
Jul 18, 2024
Non-Final Rejection — §103
Nov 22, 2024
Response Filed
Nov 22, 2024
Response after Non-Final Action
Dec 02, 2024
Final Rejection — §103
Feb 19, 2025
Examiner Interview Summary
Feb 19, 2025
Applicant Interview (Telephonic)
Apr 03, 2025
Response after Non-Final Action
May 01, 2025
Request for Continued Examination
May 05, 2025
Response after Non-Final Action
May 07, 2025
Non-Final Rejection — §103
Sep 11, 2025
Response after Non-Final Action
Sep 11, 2025
Response Filed
Jan 12, 2026
Final Rejection — §103 (current)

Precedent Cases

Applications granted by this same examiner with similar technology

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ANTI-REFLECTIVE FILM, POLARIZING PLATE, AND DISPLAY APPARATUS
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Patent 12589580
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2y 5m to grant Granted Mar 31, 2026
Patent 12583970
POLYAMIDE-BASED FILM, PREPARATION METHOD THEREOF, AND COVER WINDOW AND DISPLAY DEVICE COMPRISING THE SAME
2y 5m to grant Granted Mar 24, 2026
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2y 5m to grant Granted Mar 10, 2026
Patent 12570877
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2y 5m to grant Granted Mar 10, 2026
Study what changed to get past this examiner. Based on 5 most recent grants.

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Prosecution Projections

7-8
Expected OA Rounds
30%
Grant Probability
51%
With Interview (+21.1%)
4y 4m
Median Time to Grant
High
PTA Risk
Based on 633 resolved cases by this examiner. Grant probability derived from career allow rate.

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