Prosecution Insights
Last updated: October 04, 2026
Application No. 18/563,984

POSITIVE ELECTRODE ACTIVE MATERIAL FOR LITHIUM SECONDARY BATTERY

Non-Final OA §103
Filed
Jan 23, 2024
Priority
Jun 18, 2021 — RE 10-2021-0079572 +1 more
Examiner
LEE, DANIEL H.
Art Unit
Tech Center
Assignee
L&F Co. Ltd.
OA Round
1 (Non-Final)
71%
Grant Probability
Favorable
1-2
OA Rounds
0m
Est. Remaining
96%
With Interview

Examiner Intelligence

Grants 71% — above average
71%
Career Allowance Rate
393 granted / 557 resolved
+10.6% vs TC avg
Strong +25% interview lift
Without
With
+25.3%
Interview Lift
resolved cases with interview
Typical timeline
2y 7m
Avg Prosecution
25 currently pending
Career history
573
Total Applications
across all art units

Statute-Specific Performance

§101
0.2%
-39.8% vs TC avg
§103
60.8%
+20.8% vs TC avg
§102
9.4%
-30.6% vs TC avg
§112
26.3%
-13.7% vs TC avg
Black line = Tech Center average estimate • Based on career data from 557 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 . 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. 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. 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. Claims 1-9 are rejected under 35 U.S.C. 103 as being unpatentable over Mitsumoto et al. (“Mitsumoto”, US 2020/0194788 A1). Regarding claim 1, Mitsumoto discloses a positive electrode active substance for all solid-state lithium secondary battery (title) (reads on claim 9). Mitsumoto teaches a lithium manganese-containing composite oxide (abstract) (reads on claim 8). Mitsumoto does not expressly teach a cumulative relative particle amount of particles having a particle size of 1.5 microns or less, which is 25% or less of a total amount of particles in a particle size distribution graph. However, such is depicted in Fig. 1 of Mitsumoto where nearly all the bars are above 1.5 microns. The shape of the distribution is substantially similar to Applicant’s, and thus, there would be a reasonable expectation that Mitsumoto meets the limitations of claims 4, 6, and 7. As to claims 2 and 3, Mitsumoto teaches a heat treatment step ([0176]) which would read on firing, and teaches the heat treatment atmosphere is set to a pressure of more than 0.19 MPa, preferably more than 0.20 MPa or more, as necessary ([0177]). As to claim 5, Mitsumoto teaches Dmin is preferably 0.1 to 2.0 microns ([0101], but can be adjusted within the above range to enhance cycle characteristics ([0102]). Conclusion Any inquiry concerning this communication or earlier communications from the examiner should be directed to DANIEL H. LEE whose telephone number is (571)272-2548. The examiner can normally be reached M-F 8:30-5:00. 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, Michael Orlando can be reached at 5712705038. 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. DANIEL H. LEE Primary Examiner Art Unit 1746 /DANIEL H LEE/Primary Examiner, Art Unit 1746
Read full office action

Prosecution Timeline

Jan 23, 2024
Application Filed
Sep 22, 2026
Non-Final Rejection mailed — §103 (current)

Precedent Cases

Applications granted by this same examiner with similar technology

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NEGATIVE ELECTRODE AND NONAQUEOUS ELECTROLYTE SECONDARY BATTERY
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Patent 12683192
ELECTROLYTIC SOLUTION AND NON-AQUEOUS ELECTROLYTIC SOLUTION SECONDARY BATTERY
3y 0m to grant Granted Jul 14, 2026
Patent 12676309
NEGATIVE ELECTRODE AND NONAQUEOUS ELECTROLYTE SECONDARY BATTERY
3y 1m to grant Granted Jul 07, 2026
Patent 12620599
LAYERED BODY, NEGATIVE ELECTRODE CURRENT COLLECTOR FOR LITHIUM ION SECONDARY BATTERY, AND NEGATIVE ELECTRODE FOR LITHIUM ION SECONDARY BATTERY
2y 10m to grant Granted May 05, 2026
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
71%
Grant Probability
96%
With Interview (+25.3%)
2y 7m (~0m remaining)
Median Time to Grant
Low
PTA Risk
Based on 557 resolved cases by this examiner. Grant probability derived from career allowance rate.

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