Prosecution Insights
Last updated: July 17, 2026
Application No. 18/052,978

SEPARATOR AND NONAQUEOUS ELECTROLYTE SECONDARY BATTERY INCLUDING THE SAME

Non-Final OA §103
Filed
Nov 07, 2022
Priority
Nov 12, 2021 — JP 2021-184689
Examiner
ZEMUI, NATHANAEL T
Art Unit
1727
Tech Center
1700 — Chemical & Materials Engineering
Assignee
Prime Planet Energy & Solutions Inc.
OA Round
3 (Non-Final)
56%
Grant Probability
Moderate
3-4
OA Rounds
0m
Est. Remaining
80%
With Interview

Examiner Intelligence

Grants 56% of resolved cases
56%
Career Allowance Rate
264 granted / 472 resolved
-9.1% vs TC avg
Strong +24% interview lift
Without
With
+24.0%
Interview Lift
resolved cases with interview
Typical timeline
3y 7m
Avg Prosecution
48 currently pending
Career history
530
Total Applications
across all art units

Statute-Specific Performance

§101
0.4%
-39.6% vs TC avg
§103
89.6%
+49.6% vs TC avg
§102
6.0%
-34.0% vs TC avg
§112
2.2%
-37.8% vs TC avg
Black line = Tech Center average estimate • Based on career data from 472 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 . 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and the fee set forth in 37 CFR 1.17(e) has been timely paid, the finality of the previous Office action has been withdrawn pursuant to 37 CFR 1.114.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 04/08/2026 has been entered. Status of Claims Claim 1 amended. Claim 7 is canceled. Claims 1-6 & 8 are currently pending. 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. Claims 1-6 & 8 are rejected under 35 U.S.C. 103 as being unpatentable over Kusada (US 2023/0031407 A1) in view of Lee (US 2020/0127328 A1). Regarding claims 1-4, 6 & 8, Kusada teaches a secondary battery comprising a flat-shaped electrode body including a positive electrode, a negative electrode and a separator having an elongated shape with principal surfaces of the separator having a pair of long sides which are parallel to a longitudinal direction of the separator and comprising a base material layer of a porous resin, a ceramic layer containing inorganic particles disposed on at least one surface of the base material, and an adhesive layer on both of the principal surface of the separator such that the positive electrode and the negative electrode are insulated from each other; and a non-aqueous electrolyte; wherein the positive electrode has a positive electrode active material layer and a positive electrode current collector, and a positive electrode active material non-formed portion where no positive electrode active material layer is formed and the positive electrode current collector is exposed; the negative electrode has a negative electrode active material layer and a negative electrode current collector, and a negative electrode active material non-formed portion where no negative electrode active material layer is formed and the negative electrode current collector is exposed; the positive electrode active material layer non-formed and the negative electrode active material layer non-formed portion extend off outward from the pair of the long sides of the separator in a direction orthogonal to the longitudinal direction of the separator respectively; and a dimension of the electrode body in the direction orthogonal to the longitudinal direction of the separator and orthogonal to the thickness direction of the electrode body is larger than a dimension of the electrode body in the direction along the longitudinal direction of the separator and orthogonal to the thickness direction of the electrode body (Figs. 10 & 12; [0054]-[0067], [0075]-[0083] & [0122]-[0127]). Kusada is silent as to the separator comprising an adhesive layer having portions arranged at a predetermined pitch to form a stripe pattern on at least one of the principal surfaces such that the stripe pattern has a plurality of portions in which the adhesive layer extended from one long side of the separator to the other long side of the separator; and an angle formed by the adhesive layer and the long side of the separator is 20° or more and 70° or less. Lee teaches a non-aqueous electrolyte secondary battery comprising an electrode body including a positive electrode, a negative electrode and a separator insulating the positive electrode and the negative electrode from each other; and a non-aqueous electrolyte ([0046]-[0048]), wherein the separator comprises a base material layer of a porous resin ([0112]-[0113] & [0143]-[0147]); and a ceramic layer containing inorganic particles such as alumina and disposed on at least one surface of the base material layer ([0143]-[0144]), and an adhesive layer, made up of polyvinylidene fluoride, having portions arranged at a predetermined pitch to form a stripe pattern on both principal surfaces of the separator with long sides such that an angle formed by the adhesive layer and the long side of the at least one principal surface of the separator is 45° to 60° (Fig. 1; [0064] & [0145]-[0147]). It would have been obvious to one of ordinary skill in the art, before the effective filing date of the present invention, to provide an adhesive layer as described in Lee on Kusada’s separator in order to secure mechanical strength and overvoltage safety of the battery while improving rate capability as taught by Lee ([0025]). Regarding claim 5, Lee teaches the adhesive layer having a width of 0.5 mm to 4 mm and a coverage of the least one principal surface of the separator with the adhesive layer is 50% or more and 90% or less ([0147]). Response to Arguments Applicant’s arguments with respect to claims 1-6 & 8 have been considered but are moot because the new ground of rejection does not rely on any reference applied in the prior rejection of record for any teaching or matter specifically challenged in the argument. The amendment to claim 1 has prompted a new ground of rejection in view of the newly cited Kusada reference. As presently claimed, the subject matter of claims 1-6 & 8 is found to be obvious over the combined teachings of Kusada and Lee as noted in the above updated rejection. Thus, in view of the foregoing, claims 1-6 & 8 stand rejected. Contact Information Any inquiry concerning this communication or earlier communications from the examiner should be directed to NATHANAEL T ZEMUI whose telephone number is (571)272-4894. The examiner can normally be reached M-F 8am-5pm (EST). 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, BARBARA GILLIAM can be reached at (571)272-1330. 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. /NATHANAEL T ZEMUI/Examiner, Art Unit 1727
Read full office action

Prosecution Timeline

Show 4 earlier events
Dec 09, 2025
Examiner Interview Summary
Dec 09, 2025
Applicant Interview (Telephonic)
Jan 05, 2026
Response after Non-Final Action
Apr 06, 2026
Request for Continued Examination
Apr 07, 2026
Response after Non-Final Action
Apr 16, 2026
Non-Final Rejection mailed — §103
Jun 24, 2026
Applicant Interview (Telephonic)
Jun 24, 2026
Examiner Interview Summary

Precedent Cases

Applications granted by this same examiner with similar technology

Patent 12658433
POSITIVE ELECTRODE ACTIVE MATERIAL AND LITHIUM SECONDARY BATTERY COMPRISING THE SAME
5y 2m to grant Granted Jun 16, 2026
Patent 12658468
ELECTROLYTE AND POWER STORAGE DEVICE
3y 8m to grant Granted Jun 16, 2026
Patent 12658483
BUTTON-TYPE SECONDARY BATTERY
2y 10m to grant Granted Jun 16, 2026
Patent 12633531
POSITIVE ELECTRODE AND NONAQUEOUS ELECTROLYTE SECONDARY BATTERY USING THE SAME
3y 5m to grant Granted May 19, 2026
Patent 12597636
SOLID-STATE COMPOSITE POLYMER ELECTROLYTE MEMBRANE AND ALL-SOLID-STATE LITHIUM ION BATTERY INCLUDING THE SAME
3y 0m to grant Granted Apr 07, 2026
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
56%
Grant Probability
80%
With Interview (+24.0%)
3y 7m (~0m remaining)
Median Time to Grant
High
PTA Risk
Based on 472 resolved cases by this examiner. Grant probability derived from career allowance rate.

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