Prosecution Insights
Last updated: October 04, 2026
Application No. 18/363,989

POSITIVE ELECTRODE SHEET, SECONDARY BATTERY, BATTERY MODULE, BATTERY PACK AND ELECTRICAL APPARATUS

Final Rejection §112
Filed
Aug 02, 2023
Priority
Mar 04, 2022 — continuation of PCTCN2022079295
Examiner
WEINER, LAURA S
Art Unit
1723
Tech Center
1700 — Chemical & Materials Engineering
Assignee
CONTEMPORARY AMPEREX TECHNOLOGY (HONG KONG) LIMITED
OA Round
7 (Final)
85%
Grant Probability
Favorable
8-9
OA Rounds
0m
Est. Remaining
99%
With Interview

Examiner Intelligence

Grants 85% — above average
85%
Career Allowance Rate
991 granted / 1162 resolved
+20.3% vs TC avg
Moderate +14% lift
Without
With
+14.3%
Interview Lift
resolved cases with interview
Typical timeline
3y 1m
Avg Prosecution
42 currently pending
Career history
1194
Total Applications
across all art units

Statute-Specific Performance

§101
1.0%
-39.0% vs TC avg
§103
30.0%
-10.0% vs TC avg
§102
21.6%
-18.4% vs TC avg
§112
35.1%
-4.9% vs TC avg
Black line = Tech Center average estimate • Based on career data from 1162 resolved cases

Office Action

§112
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 . Response to Arguments Applicant's arguments filed 9-3-2026 have been fully considered but they are not persuasive. The rejection of claim 46 remains rejected under 35 U.S.C. 112(b) or 35 U.S.C. 112 (pre-AIA ), second paragraph because it is unclear in b) and c) which layer is positioned on the current collector and which layer is positioned on the layer positioned on the current collector. Applicant’s arguments with respect to claim(s) 46, 48-54, 56 and 58-61 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. Claim Rejections - 35 USC § 112 Claims 46, 48-54, 56 and 58-61 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. Claim 46 is rejected because it is unclear in b) and c) which layer is positioned on the current collector and which layer is positioned on the layer positioned on the current collector. Claim 46 is rejected because unclear what is meant by “wherein material, the surface of the particles…”. Claim Objections Claims 46, 48-49 and 54 are objected to because of the following informalities: Claim 46 is objected to because “-” in “-and” should not be there. Claim 46 and 48-49 are objected to because “C” should not be used as a variable because C refers to carbon. Claim 54 is objected to because the upper range of the compacted density of the 1st positive active material at 3T is not claimed. Appropriate correction is required. Conclusion The prior art made of record and not relied upon is considered pertinent to applicant's disclosure. Nakamura et al. (JP 2002-198050, machine translation) teaches a positive electrode comprising an active material comprising Li1-xA0<x<0.1Fe1-y-zM0<y<0.5Mez=0.3P1-mX0< m <0.3O4-nZ0<n<0.5 where A can be Na or K; M can be Mn; X at least one of S, Si, Ni, etc. and Z is at least one of F, Cl, Br, S, etc. and x+z+m+n >0. Nakamura et al. teaches in Example 13, the active material comprises Li0.95Na0.05Fe0.8Co0.2PO4 and teaches in Example 14, the active material comprises Li0.95K0.05Fe0.8Co0.2PO4 [Thus teaching LiaAx is known]. Nakamura et al. teaches in Example 9, the active material comprises LiFe0.8Co0.2P0.9Si01O4 and teaches in Example 10, the active material comprises LiFe0.8Co0.2P0.9N01O4 [Thus teaching P1-mXm is known]. Nakamura et al. teaches in Examples 3-5 and 7, the active material comprises LiFe0.8Co0.2PO3.9Z0.1 where Z can be F, Cl, Br and S [Thus teaching O4-nDn is known]. Nakamura et al. teaches that the positive electrode comprises the active material above; graphite as a conductive and a binder. Nakamura et al. teaches that the positive material was applied to a current collector. Ohira et al. (US 9,005,810) teaches a cathode active material having a composition represented by formula (1): LiMn1-xMxP1-ySiyO4 where M = Zr, Sn, Y or Al where 0 < x < 0.5 and 0 < y < 0.5. Ohira et al. teaches specifically cathode active material in Table 1, comprising: Li(Mn0.9Sn0.1)(P0.8Si0,2)O4, Li(Mn0.95Zr0.05)(P0.9Si0,1)O4, or Li(Mn0.95Sn0.05)(P0.9Si0,1)O4. Wu (JP 6157563 B2, machine translation) teaches a lithium ion battery positive electrode material comprising the formula LiMnxFe1-xP1-aSibMcO4-dFd where M can be B, Cl or S). Wu (US 2016/0190584) teaches in claim 1, a Li-ion battery positive electrode material comprising LiMnxFe1-xP1-aSibMcO4-dFd where M is B or S and teaches in claim 3 that the positive active material contains a carbon coating layer. Natsui et al. (US 2023/0402594) teaches in Example 1, a lithium transition metal composite oxide comprising Li1.67Sb0.001Mn0.55Ni0.275P0.065O1.92F0.08. Ma et al. (US 2023/0335723) claims in claim 1, a positive electrode active material comprising Li1+xMn1-yAyP1-zRzO4 which is the exact same material of the instant positive electrode material. Ma et al. (US 2023/0343938) claims in claim 1, a positive electrode active material comprising LiaAxMn1-yByP1-zCzO4-nDn which is the exact same material of the instant positive electrode material. Jiang et al. (US 2023/0361296) claims in claim 1, a positive electrode active material comprising LiaAxMn1-yByP1-zCzO4-nDn which is the exact same material of the instant positive electrode material. Ohira et al. (US 2013/0209886) teaches a cathode comprising a positive material comprising LiMn1-xMxP1-ySiyO4. Conclusion 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 Laura Weiner whose telephone number is (571)272-1294. The examiner can normally be reached 9 am-5 pm EST M, Th and 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, Tong Guo can be reached at 571-272-3066. 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. /LAURA S. WEINER/ Primary Examiner Art Unit 1723 /Laura Weiner/Primary Examiner, Art Unit 1723
Read full office action

Prosecution Timeline

Show 18 earlier events
Feb 27, 2026
Request for Continued Examination
Mar 06, 2026
Response after Non-Final Action
Apr 22, 2026
Applicant Interview (Telephonic)
Apr 22, 2026
Examiner Interview Summary
May 18, 2026
Response after Non-Final Action
Jun 04, 2026
Non-Final Rejection mailed — §112
Sep 03, 2026
Response Filed
Sep 18, 2026
Final Rejection mailed — §112 (current)

Precedent Cases

Applications granted by this same examiner with similar technology

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Patent 12744249
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Study what changed to get past this examiner. Based on 5 most recent grants.

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Prosecution Projections

8-9
Expected OA Rounds
85%
Grant Probability
99%
With Interview (+14.3%)
3y 1m (~0m remaining)
Median Time to Grant
High
PTA Risk
Based on 1162 resolved cases by this examiner. Grant probability derived from career allowance rate.

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