Prosecution Insights
Last updated: October 02, 2026
Application No. 18/560,404

POLYPHENYLENE ETHER, PRODUCTION METHOD OF THE SAME, THERMOSETTING COMPOSITION, PREPREG, AND LAMINATE

Final Rejection §103§112
Filed
Nov 13, 2023
Priority
May 21, 2021 — JP 2021-086490 +2 more
Examiner
YOON, TAE H
Art Unit
1692
Tech Center
1600 — Biotechnology & Organic Chemistry
Assignee
Asahi Kasei Kabushiki Kaisha
OA Round
2 (Final)
66%
Grant Probability
Favorable
3-4
OA Rounds
0m
Est. Remaining
91%
With Interview

Examiner Intelligence

Grants 66% — above average
66%
Career Allowance Rate
980 granted / 1473 resolved
+6.5% vs TC avg
Strong +25% interview lift
Without
With
+24.7%
Interview Lift
resolved cases with interview
Typical timeline
2y 10m
Avg Prosecution
41 currently pending
Career history
1499
Total Applications
across all art units

Statute-Specific Performance

§101
1.4%
-38.6% vs TC avg
§103
41.3%
+1.3% vs TC avg
§102
14.9%
-25.1% vs TC avg
§112
29.8%
-10.2% vs TC avg
Black line = Tech Center average estimate • Based on career data from 1473 resolved cases

Office Action

§103 §112
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 . DETAILED ACTION Claim Rejections - 35 USC § 112 The following is a quotation of 35 U.S.C. 112(b): (b) CONCLUSION.—The specification shall conclude with one or more claims particularly pointing out and distinctly claiming the subject matter which the inventor or a joint inventor regards as the invention. The following is a quotation of 35 U.S.C. 112 (pre-AIA ), second paragraph: The specification shall conclude with one or more claims particularly pointing out and distinctly claiming the subject matter which the applicant regards as his invention. Claims 1-14 are rejected under 35 U.S.C. 112(b) or 35 U.S.C. 112 (pre-AIA ), second paragraph, as being indefinite for failing to particularly point out and distinctly claim the subject matter which the inventor or a joint inventor (or for applications subject to pre-AIA 35 U.S.C. 112, the applicant), regards as the invention. Newly recited clause for a phenol having the Formula (1) of claim 1 is directed at the specific polyols recited. The phenol having the Formula (1) of claim 1 is not limited to the phenol having substituents having Formula (3) since claim 1 recites that R11 and R12 include hydrogen or a linear saturated hydrocarbon group having a carbon number of 1 to 12, where R11 and R12 cannot be both hydrogen atoms, which would be an alternative Formula (1) to the newly recited clause for the Formula (1) of claim 1. Thus, it is unclear whether the phenol having the Formula (1) of claim 1 is limited to the phenol having the newly recited clause or not. In other words, the recited Formula (1) of claim 1 includes R11 being the hydrogen and R12 being the linear saturated hydrocarbon group having a carbon number of 1 to 12 which does not require the alternative substituent having Formula (3). See Ex parte Miyazaki, No. 2007-3300, 2008 WL 5105055, at 5 (BPAI Nov. 19, 2008) 89 USPQ2d 1207: [I]f a claim is amendable to two or more plausible claim constructions, the USPTO is justified in requiring the applicant to more precisely define the metes and bounds of the claimed invention by holding the claim unpatentable under 35. USC 112, 2nd paragraph, as indefinite. MPEP 2175 and 2143.03. Other claims depend on the indefinite claim 1 would be also indefinite. 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 1-4, 7, 8 and 12 are rejected under 35 U.S.C. 103 as being unpatentable over WO 2016/033156 A1 (March 3, 2016) in view of Yeager et al. (US 2008/0076884 A1) (Mar. 27, 2008). Rejection is maintained for reasons of the record (i.e., the previous office is not repeated here). Regarding new claims 13 and 13, WO teach various wt.% of a mixture of phenols in table 2 and thus the instantly recited various mol% to obtain different D, Tg and Char Mass in N2 taught in table 2 and different properties taught in para. [0001] of WO would have been obvious. When patentability is predicated upon a change in a condition of a prior art composition, such as a change in concentration or in temperature, or both, the burden is on Applicant to establish with objective evidence that the change is critical, i.e., it leads to a new unexpected result. It is not inventive to discover the optimum or workable ranges by routine experimentation when the general conditions of a claim are disclosed in the prior art. See In re Woodruff, 919 F.2d 1575, 1578 (Fed. Cir. 1990); In re Aller, 220 F.2d 454, 456 (CCPA 1955). MPEP 2144.05. Further regarding utilization of the instant Formula (1), Yeager et al. teach a phenol having instant R11 and R12 and limitation thereof (i.e. both cannot be H) in [0025]. See In re Mills, 477 F.2d 649, 176 USPQ 196 (CCPA), In re Lamberti, 545 F.2d 747, 750 (CCPA 1976): Reference must be considered for all that it discloses and must not be limited to preferred embodiments or working examples. MPEP 2123. RESPONSE TO ARGUMENTS Applicant asserts that Yeager et al. exclude a tertiary hydrocarbyl at the ortho positions (R11 and R12) and that the claimed Formula (3) encompasses bulky ortho substituents such as tert-butyl. Such assertion would not mean that presence of the bulky ortho substituents is mandatory, and the claimed Formula (3) also encompasses one without bulky ortho substituents. Applicant asserts that Yeager et al. do not suggest the newly recited clause for a phenol having the Formula (1) of claim 1, but the newly recited clause for a phenol having the Formula (1) of claim 1 would be an alternative as discussed above 112(b) rejection. Thus, applicant’s assertion would lack a probative value. Claims 1-8 and 12-14 are rejected under 35 U.S.C. 103 as being unpatentable over JP 2008-239720 A (Oct. 9, 2008) with Machine translation in view of a 1-page brochure showing 3-Pentadecylphenol (CAS. No. 501-24-6), WO 2016/033156 A1 (March 3, 2016) and Yeager et al. (US 2008/0076884 A1) (Mar. 27, 2008). Rejection is maintained for reasons of the record (i.e., the previous office is not repeated here). Regarding new claims 13 and 14, Machine translated JP and JP teach a mixture of 60 mass%-95 mass% of the phenolic compound (C) and 5 mass % to 40 mass % of the phenolic compound (D) in claims 4 and 5 (page 3 of JP). When patentability is predicated upon a change in a condition of a prior art composition, such as a change in concentration or in temperature, or both, the burden is on Applicant to establish with objective evidence that the change is critical, i.e., it leads to a new unexpected result. It is not inventive to discover the optimum or workable ranges by routine experimentation when the general conditions of a claim are disclosed in the prior art. See In re Woodruff, 919 F.2d 1575, 1578 (Fed. Cir. 1990); In re Aller, 220 F.2d 454, 456 (CCPA 1955). MPEP 2144.05. RESPONSE TO ARGUMENTS Applicant asserts that Yeager et al. exclude a tertiary hydrocarbyl at the ortho positions (R11 and R12) and that the claimed Formula (3) encompasses bulky ortho substituents such as tert-butyl. Such assertion would not mean that presence of the bulky ortho substituents is mandatory, and the claimed Formula (3) also encompasses one without bulky ortho substituents. Applicant asserts that Yeager et al. do not suggest the newly recited clause for a phenol having the Formula (1) of claim 1, but the newly recited clause for a phenol having the Formula (1) of claim 1 would be an alternative as discussed above 112(b) rejection. Thus, applicant’s assertion would lack a probative value. Claims 9-11 are rejected under 35 U.S.C. 103 as being unpatentable over JP 2008-239720 A (Oct. 9, 2008) with Machine translation in view of a 1-page brochure showing 3-Pentadecylphenol (CAS. No. 501-24-6) and Yeager et al. (US 2008/0076884A1) (Mar. 27, 2008) as applied to claims 1-8 and 12-14 above, and further in view of Japp et al. (US 2004/0082730 A1). Rejection is maintained for reasons of the record (i.e., the previous office is not repeated here). RESPONSE TO ARGUMENTS See the Response to Arguments above for the rejection of claims 1-8 and 12. 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 TAE H YOON whose telephone number is (571)272-1128. The examiner can normally be reached Mon-Fri. 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, Robert Jones can be reached at (571)270-7733. 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. /TAE H YOON/Primary Examiner, Art Unit 1762
Read full office action

Prosecution Timeline

Nov 13, 2023
Application Filed
May 13, 2026
Non-Final Rejection mailed — §103, §112
Aug 10, 2026
Response Filed
Aug 31, 2026
Final Rejection mailed — §103, §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

3-4
Expected OA Rounds
66%
Grant Probability
91%
With Interview (+24.7%)
2y 10m (~0m remaining)
Median Time to Grant
Moderate
PTA Risk
Based on 1473 resolved cases by this examiner. Grant probability derived from career allowance rate.

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