Prosecution Insights
Last updated: October 22, 2026
Application No. 19/030,599

ELECTRODE PIECE AND BATTERY

Final Rejection §112
Filed
Jan 17, 2025
Priority
Dec 30, 2020 — CN 202011628643.2 +2 more
Examiner
WEINER, LAURA S
Art Unit
1723
Tech Center
1700 — Chemical & Materials Engineering
Assignee
Zhuhai Cosmx Battery Co., Ltd.
OA Round
4 (Final)
85%
Grant Probability
Favorable
5-6
OA Rounds
1y 4m
Est. Remaining
99%
With Interview

Examiner Intelligence

Grants 85% — above average
85%
Career Allowance Rate
992 granted / 1164 resolved
+20.2% vs TC avg
Moderate +15% lift
Without
With
+14.7%
Interview Lift
resolved cases with interview
Typical timeline
3y 1m
Avg Prosecution
40 currently pending
Career history
1202
Total Applications
across all art units

Statute-Specific Performance

§101
1.0%
-39.0% vs TC avg
§103
29.8%
-10.2% vs TC avg
§102
21.7%
-18.3% vs TC avg
§112
35.3%
-4.7% vs TC avg
Black line = Tech Center average estimate • Based on career data from 1164 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 with respect to claim(s) 1, 3-6, 10, 18 and 20 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. Note: The Examiner discussed amending claim 1 in an interview held on September 17, 2026, with Patent Agent Chen Le. The Examiner-Initiated Interview Summary should have stated Patent Agent for the title instead of citing Primary Examiner as the title. Claim Rejections - 35 USC § 112 Claims 1, 3-6, 10, 18 and 20 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 1 is rejected because the phrase “and the functional layer is arranged around the tab” is unclear because it is unclear how much of the functional layer is arranged around the tab. Claim 1 is rejected because the phrase “an adhesive tape is attached to a surface of the electrode piece provided with the tab and the adhesive tape is adhered to the tab on a second surface of the tab” makes the claim unclear. Claim 1 is rejected because the phrases “and the functional layer is arranged around the tab” and “an adhesive tape is attached to a surface of the electrode piece provided with the tab and the adhesive tape is adhered to the tab on a second surface of the tab” are not shown Figure 1. PNG media_image1.png 209 593 media_image1.png Greyscale Conclusion The prior art made of record and not relied upon is considered pertinent to applicant's disclosure. Zhang (CN 211088397) teaches PNG media_image2.png 163 306 media_image2.png Greyscale Sun et al. (CN 112802992) teaches PNG media_image3.png 79 318 media_image3.png Greyscale a pole piece comprising a current collector, a first active layer and a second active layer. Sun et al. (CN 112820852) teaches PNG media_image4.png 77 301 media_image4.png Greyscale a negative plate comprising a current collector, a 1st active layer and a 2nd active layer. Hitachi Maxell( JP 6-734059) teaches in [0012]-[0052],[0057],[0120]-[0122]; Fig. 1), an electrode piece, comprising a current collector (21) and a functional layer (22) located on a first surface of the current collector, wherein the first surface is provided with a tab (23), and the functional layer (22) on the first surface is composed of a normal area away from the tab and a recessed area near the tab (i.e. area where the collector is exposed since the functional layer has thickness and a thickness of the recessed area is less than a thickness of the normal area. 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, Ula Ruddock can be reached at 571-272-1481. 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 5 earlier events
Jan 29, 2026
Examiner Interview (Telephonic)
Feb 12, 2026
Request for Continued Examination
Feb 15, 2026
Response after Non-Final Action
May 28, 2026
Non-Final Rejection mailed — §112
Aug 26, 2026
Response Filed
Sep 17, 2026
Examiner Interview (Telephonic)
Sep 17, 2026
Examiner Interview Summary
Oct 05, 2026
Final Rejection mailed — §112 (current)

Precedent Cases

Applications granted by this same examiner with similar technology

Patent 12770881
Electrode for Secondary Battery and Method for Manufacturing the Same
4y 5m to grant Granted Oct 20, 2026
Patent 12763333
Aluminum-Coated Fiber Additive for Resistance Reduction in a Battery and Battery Materials
3y 10m to grant Granted Oct 13, 2026
Patent 12755981
Nanostrand Additive for Resistance Reduction in a Battery and Battery Materials
3y 9m to grant Granted Oct 06, 2026
Patent 12749711
Lithium Secondary Battery
3y 11m to grant Granted Sep 29, 2026
Patent 12744205
POSITIVE ELECTRODE ACTIVE MATERIAL FOR NONAQUEOUS ELECTROLYTE SECONDARY BATTERY, AND NONAQUEOUS ELECTROLYTE SECONDARY BATTERY
4y 6m to grant Granted Sep 22, 2026
Study what changed to get past this examiner. Based on 5 most recent grants.

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Prosecution Projections

5-6
Expected OA Rounds
85%
Grant Probability
99%
With Interview (+14.7%)
3y 1m (~1y 4m remaining)
Median Time to Grant
High
PTA Risk
Based on 1164 resolved cases by this examiner. Grant probability derived from career allowance rate.

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