Prosecution Insights
Last updated: July 17, 2026
Application No. 18/480,013

LITHIUM SECONDARY BATTERY

Non-Final OA §102§103
Filed
Oct 03, 2023
Priority
Apr 06, 2021 — continuation of PCTJP2021014610 +1 more
Examiner
LYNCH, VICTORIA HOM
Art Unit
1724
Tech Center
1700 — Chemical & Materials Engineering
Assignee
Terawatt Technology K K
OA Round
1 (Non-Final)
86%
Grant Probability
Favorable
1-2
OA Rounds
0m
Est. Remaining
96%
With Interview

Examiner Intelligence

Grants 86% — above average
86%
Career Allowance Rate
720 granted / 833 resolved
+21.4% vs TC avg
Moderate +10% lift
Without
With
+9.7%
Interview Lift
resolved cases with interview
Typical timeline
2y 8m
Avg Prosecution
37 currently pending
Career history
859
Total Applications
across all art units

Statute-Specific Performance

§101
0.6%
-39.4% vs TC avg
§103
75.8%
+35.8% vs TC avg
§102
8.2%
-31.8% vs TC avg
§112
10.7%
-29.3% vs TC avg
Black line = Tech Center average estimate • Based on career data from 833 resolved cases

Office Action

§102 §103
DETAILED ACTION Notice of Pre-AIA or AIA Status 1. The present application, filed on or after March 16, 2013, is being examined under the first inventor to file provisions of the AIA . Election/Restrictions 2. Applicant’s election without traverse of Species A as exemplified by claims 1 and 6 in the reply filed on 5/15/26 is acknowledged. 3. Claims 7-10 are withdrawn from further consideration pursuant to 37 CFR 1.142(b) as being drawn to nonelected species, there being no allowable generic or linking claim. Election was made without traverse in the reply filed on 5/15/26. Claim Rejections - 35 USC § 102 4. 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. 5. The following is a quotation of the appropriate paragraphs of 35 U.S.C. 102 that form the basis for the rejections under this section made in this Office action: A person shall be entitled to a patent unless – (a)(1) the claimed invention was patented, described in a printed publication, or in public use, on sale, or otherwise available to the public before the effective filing date of the claimed invention. 6. Claim(s) 1-5, and 11-13 is/are rejected under 35 U.S.C. 102(a)(1) as being anticipated by Chang et al. (US 2019/0214672) as cited in IDS dated 10/3/23. Regarding claim 1, Chang discloses a lithium secondary battery ([0036]-[0040], Fig. 1A) comprising: a positive electrode(cathode 18, Fig. 1A, [0040]); a separator(non-woven fabric 12c, Fig. 1B, [0037], [0048]-[0049]); a negative electrode that is free of a negative electrode active material(anode current collector 11, Fig. 1A, [0036]); and an electrolytic solution(first liquid electrolyte 12b, Fig. 1A, [0036]), wherein the electrolytic solution contains a fluorine solvent represented by Chemical Formula(1), PNG media_image1.png 90 238 media_image1.png Greyscale (in the formulae, each of R10 and R20 independently represents any of a C1 to C8 alkyl group, or a C1 to C8 alkyl group that is fully or partially fluorinated) (fluorinated ether compound [0066], [0074]). Regarding claim 2, Chang discloses R10 or R20 includes one or more CF3 groups([0074]). Regarding claim 3, Chang discloses R20 is trifluoroethyl ([0074]). Regarding claim 4, Chang discloses R10 is selected from an ethyl group, or an n-propyl group ([0074]). Regarding claim 5, Chang discloses R10 is selected from an ethyl group that is fully or partially fluorinated, or an n-propyl group that is fully or partially fluorinated ([0074]). Regarding claim 11, Chang discloses the electrolytic solution further contains a fluorine solvent consisting of a compound having at least one of a monovalent group represented by Formula (A) or a monovalent group represented by Formula (B), PNG media_image2.png 647 637 media_image2.png Greyscale (In the formulae, a wavy line represents a bonding site in the monovalent group)([0075]). Regarding claim 12, Chang discloses a total amount of the fluorine solvents is 5 vol% to about 25 vol% ([0072]) which is within the claim range of 5% by volume or more relative to an overall amount of solvent components in the electrolytic solution, thus reading on the limitation. According to the MPEP, “"[W]hen, as by a recitation of ranges or otherwise, a claim covers several compositions, the claim is ‘anticipated’ if one of them is in the prior art." Titanium Metals Corp. v. Banner, 778 F.2d 775, 227 USPQ 773 (Fed. Cir. 1985) See MPEP 2131.03. Regarding claim 13, Chang discloses the electrolytic solution is a non-aqueous electrolytic solution([0066]), and the solvent further contains an ether solvent as a non-fluorine solvent([0066]). Claim Rejections - 35 USC § 103 7. 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. The factual inquiries for establishing a background for determining obviousness under 35 U.S.C. 103 are summarized as follows: 1. Determining the scope and contents of the prior art. 2. Ascertaining the differences between the prior art and the claims at issue. 3. Resolving the level of ordinary skill in the pertinent art. 4. Considering objective evidence present in the application indicating obviousness or nonobviousness. 8. 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. 9. Claim(s) 6 is/are rejected under 35 U.S.C. 103 as being unpatentable over Chang et al. (US 2019/0214672) as cited in IDS dated 10/3/23 as applied to claim 1 above, and further in view of Yokotsuji et al. (JP2014110235A) as cited in IDS dated 10/3/23 with citations from machine translation provided by Applicant. Regarding claim 6, Chang discloses fluorinated ether compound ([0066]) but does not explicitly disclose the fluorine solvent of Chemical Formula (1) is any of fluorine solvents represented by Chemical Formulae (11) to (15), PNG media_image3.png 652 255 media_image3.png Greyscale . Yokotsuji teaches electrolyte for rechargeable lithium ion battery and rechargeable lithium ion battery (title). Yokotsuji teaches an electrolyte solution for a lithium ion secondary battery comprising a fluorinated ether in which at least some the hydrogen atoms are substituted with fluorine atoms (claim 1). Yokotsuji teaches 2,2,2-trifluoroethyl methyl ether (claim 7). It would have been obvious to one of ordinary skill in the art to provide the battery of Chang with the fluorine solvent of chemical formula (1) is represented by chemical formula (13) as taught by Yokotsuji as Chang discloses genus of fluorinated ether solvent. MPEP 2144.08. Conclusion Any inquiry concerning this communication or earlier communications from the examiner should be directed to VICTORIA HOM LYNCH whose telephone number is (571)272-0489. The examiner can normally be reached 7:30 AM - 4:30 PM EST M-F. 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, Miriam Stagg can be reached at 571-270-5256. 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. /VICTORIA H LYNCH/Primary Examiner, Art Unit 1724
Read full office action

Prosecution Timeline

Oct 03, 2023
Application Filed
Jun 08, 2026
Non-Final Rejection mailed — §102, §103 (current)

Precedent Cases

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Study what changed to get past this examiner. Based on 5 most recent grants.

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Prosecution Projections

1-2
Expected OA Rounds
86%
Grant Probability
96%
With Interview (+9.7%)
2y 8m (~0m remaining)
Median Time to Grant
Low
PTA Risk
Based on 833 resolved cases by this examiner. Grant probability derived from career allowance rate.

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