Prosecution Insights
Last updated: April 19, 2026
Application No. 17/708,501

NEGATIVE ELECTRODE MATERIAL AND ELECTROCHEMICAL APPARATUS AND ELECTRONIC APPARATUS CONTAINING SAME

Final Rejection §102
Filed
Mar 30, 2022
Examiner
AKRAM, IMRAN
Art Unit
1725
Tech Center
1700 — Chemical & Materials Engineering
Assignee
Ningde Amperex Technology Limited
OA Round
5 (Final)
64%
Grant Probability
Moderate
6-7
OA Rounds
3y 5m
To Grant
99%
With Interview

Examiner Intelligence

Grants 64% of resolved cases
64%
Career Allow Rate
624 granted / 970 resolved
-0.7% vs TC avg
Strong +43% interview lift
Without
With
+43.1%
Interview Lift
resolved cases with interview
Typical timeline
3y 5m
Avg Prosecution
37 currently pending
Career history
1007
Total Applications
across all art units

Statute-Specific Performance

§103
38.1%
-1.9% vs TC avg
§102
33.5%
-6.5% vs TC avg
§112
18.5%
-21.5% vs TC avg
Black line = Tech Center average estimate • Based on career data from 970 resolved cases

Office Action

§102
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 claims 1-11, 13, 14, 16, and 17 have been considered but are moot because the new ground of rejection necessitated by amendment 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 § 102 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 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. (a)(2) the claimed invention was described in a patent issued under section 151, or in an application for patent published or deemed published under section 122(b), in which the patent or application, as the case may be, names another inventor and was effectively filed before the effective filing date of the claimed invention. Claims 1-11, 13, 14, 16, 17, and 19 are rejected under 35 U.S.C. 102(a)(1) as being anticipated by Zhamu (US 2010/0143798 A1). Haon (US 2017/0320744 A1) is used as evidentiary support in claim 14. Regarding claims 1 and 10, Zhamu discloses a composition comprising silicon-based nanocomposite solid particles, wherein the nanocomposite particles comprise: an active material, nano graphene platelets (NGPs), and a protective matrix (paragraph 99). Zhamu discloses that the active material is silicon (paragraph 79), NGPs are made of carbon because they are graphene, and that the protective matrix is a polymeric carbon (paragraph 71). Since Zhamu discloses the elements claims, it possesses the same properties. See MPEP 2112 I. Zhamu discloses that the NGP layer is 1 to 100 nm thick (paragraph 76). Regarding claims 2 and 3, since Zhamu discloses the elements claims, it possesses the same properties. See MPEP 2112 I. Regarding claims 4, 5, and 19, Zhamu discloses that the polymer is epoxy resin (paragraph 7), polyacrylonitrile (paragraph 10), and polyaniline (paragraph 71). Regarding claims 6 and 7, Zhamu discloses substoichiometric SiOx and SiO2 (paragraph 106). Regarding claims 8 and 9, Zhamu discloses that the NGPs occupy a weight fraction of 1-90% total nanocomposite weight (paragraph 99). Regarding claim 11, Zhamu discloses that the NGPs contain CNTs (paragraph 67) from a few nanometers to the micrometer range (paragraph 106). Regarding claim 13, Zhamu discloses that the particles are 1-20 microns in diameter (paragraph 73). Regarding claim 14, Zhamu does not disclose the specific surface area of the particles though we do know that they are of the same dimensions based on the rejections above. Zhamu also discloses measuring specific surface area via BET (paragraph 128). Hoan discloses that the BET measures that the specific surface area of such-dimensioned particles is 1-100 m2/g (paragraph 40). Regarding claim 16 and 17, Haon discloses an apparatus comprising: a negative electrode and a positive electrode (paragraph 1), an electrode comprising silicon-based nanocomposite solid particles, wherein the nanocomposite particles comprise: an active material, nano graphene platelets (NGPs), and a protective matrix (paragraph 99). Zhamu discloses that the active material is silicon (paragraph 79), NGPs are made of carbon because they are graphene, and that the protective matrix is a polymeric carbon (paragraph 71). Since Zhamu discloses the elements claims, it possesses the same properties. See MPEP 2112 I. Zhamu discloses that the NGP layer is 1 to 100 nm thick (paragraph 76). 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 IMRAN AKRAM whose telephone number is (571)270-3241. The examiner can normally be reached M-F 9a-5p. 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, Basia Ridley can be reached at 571-272-1453. 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. /IMRAN AKRAM/Primary Examiner, Art Unit 1725
Read full office action

Prosecution Timeline

Mar 30, 2022
Application Filed
Sep 16, 2024
Non-Final Rejection — §102
Dec 17, 2024
Response Filed
Jan 28, 2025
Final Rejection — §102
Apr 03, 2025
Response after Non-Final Action
May 28, 2025
Request for Continued Examination
Jun 01, 2025
Response after Non-Final Action
Aug 08, 2025
Final Rejection — §102
Sep 16, 2025
Non-Final Rejection — §102
Oct 01, 2025
Examiner Interview Summary
Oct 01, 2025
Applicant Interview (Telephonic)
Dec 05, 2025
Response Filed
Mar 11, 2026
Final Rejection — §102 (current)

Precedent Cases

Applications granted by this same examiner with similar technology

Patent 12603383
TRACTION BATTERY PACK VENTING SYSTEMS WITH ENCLOSURE ASSEMBLY INTEGRATED VENT EXHAUST CHANNELS
2y 5m to grant Granted Apr 14, 2026
Patent 12600910
UPDRAFT GASIFIER AND METHOD, APPARATUS, AND SYSTEM FOR BIOMASS DECOMPOSITION
2y 5m to grant Granted Apr 14, 2026
Patent 12594544
HIGH TAR CONVERSION PERFORMANCE OF A Nl-FE-MGO CATALYST
2y 5m to grant Granted Apr 07, 2026
Patent 12595430
WASTE TO ENERGY SYSTEM AND PROCESS FOR SOLID WASTE FEEDSTOCK
2y 5m to grant Granted Apr 07, 2026
Patent 12592389
POSITIVE ELECTRODE COATING MATERIAL FOR LITHIUM SECONDARY BATTERY, PREPARATION METHOD THEREOF, AND POSITIVE ELECTRODE AND LITHIUM SECONDARY BATTERY COMPRISING THE COATING MATERIAL
2y 5m to grant Granted Mar 31, 2026
Study what changed to get past this examiner. Based on 5 most recent grants.

AI Strategy Recommendation

Get an AI-powered prosecution strategy using examiner precedents, rejection analysis, and claim mapping.
Powered by AI — typically takes 5-10 seconds

Prosecution Projections

6-7
Expected OA Rounds
64%
Grant Probability
99%
With Interview (+43.1%)
3y 5m
Median Time to Grant
High
PTA Risk
Based on 970 resolved cases by this examiner. Grant probability derived from career allow rate.

Sign in with your work email

Enter your email to receive a magic link. No password needed.

Personal email addresses (Gmail, Yahoo, etc.) are not accepted.

Free tier: 3 strategy analyses per month