Prosecution Insights
Last updated: August 17, 2026
Application No. 19/200,734

COMPOSITE SODIUM ION BATTERY CATHODE MATERIAL WITH RADIAL HETEROJUNCTION AND PREPARATION METHOD THEREOF

Non-Final OA §112
Filed
May 07, 2025
Priority
Oct 22, 2024 — CN 202411472835.7
Examiner
KOPEC, MARK T
Art Unit
1762
Tech Center
1700 — Chemical & Materials Engineering
Assignee
Hebei University
OA Round
1 (Non-Final)
84%
Grant Probability
Favorable
1-2
OA Rounds
1y 0m
Est. Remaining
97%
With Interview

Examiner Intelligence

Grants 84% — above average
84%
Career Allowance Rate
927 granted / 1099 resolved
+19.3% vs TC avg
Moderate +13% lift
Without
With
+13.0%
Interview Lift
resolved cases with interview
Typical timeline
2y 3m
Avg Prosecution
29 currently pending
Career history
1116
Total Applications
across all art units

Statute-Specific Performance

§101
1.2%
-38.8% vs TC avg
§103
38.1%
-1.9% vs TC avg
§102
27.5%
-12.5% vs TC avg
§112
19.5%
-20.5% vs TC avg
Black line = Tech Center average estimate • Based on career data from 1099 resolved cases

Office Action

§112
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 . Priority This application claims priority to CN 202411472835.7 (filed 10/22/24). It is noted, however, that applicant has not filed a certified copy of the priority application as required by 37 CFR 1.55. Claims 1-8 are pending. Drawings The Drawings filed 05/07/25 are approved by the examiner. Information Disclosure Statement The IDS statements filed 05/16/25 and 10/09/25 have been considered. Initialed copies accompany this action. Claim Rejections - 35 USC § 112 The following is a quotation of 35 U.S.C. 112(b): (b) CONCLUSION.—The specification shall conclude with one or more claims particularly pointing out and distinctly claiming the subject matter which the inventor or a joint inventor regards as the invention. The following is a quotation of 35 U.S.C. 112 (pre-AIA ), second paragraph: The specification shall conclude with one or more claims particularly pointing out and distinctly claiming the subject matter which the applicant regards as his invention. Claim Construction Note that the examiner considers the structural and compositional recitations appearing at lines 1-13 as positive claim limitations. Any terminology in the preamble that limits the structure of the claimed invention must be treated as a claim limitation. See, e.g., Corning Glass Works v. Sumitomo Elec. U.S.A., Inc., 868 F.2d 1251, 1257, 9 USPQ2d 1962, 1966 (Fed. Cir. 1989). Also, as no special technical definition appears in the instant specification, the examiner construes the claim terminology “radial heterojunction” to require it’s normal meaning in the art (i.e. a core/shell structure emanating from a central point)(see instant Figs 1-4). Claims 1-8 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. The instant claims are considered indefinite in that it is unclear as to how the recited process (instant step 2) results in the precursor particle stoichiometry of Ni0.3Mn0.7(OH)2 coated Ni0.5Mn0.5(OH)2 recited in method step 3 as it appears that the two solutions recited in step 2 are never present or reacted with each other to result in a mixed stoichiometry precursor. Specifically, while instant method step 2 recites both a first mixed solution and a second mixed solution, instant step 2 further requires “…taking out the precursor material” and “…switching the salt solution in the reaction kettle to the second mixed solution…”. Accordingly, it does not appear that the two solutions are ever in contact (or reacted) with each other. The examiner notes that the reaction conditions with which the instant inventive examples are produced (i.e. instant PGPUB para 0047-49) and the reaction conditions of the comparative embodiment (para 0066-67) are identical. It is unclear as to how identical reaction conditions with identical stoichiometry precursor materials could result in different products (Table 1). Clarification is required. In dependent claims 2 and 4-7, applicant should clarify in which method step(s) (e.g. 1-5) recited in independent claim 1 the additional limitations refer. Allowable Subject Matter The above 112 rejection(s) notwithstanding, the instant claims are allowable over the prior art. CN 117976884 discloses (Abstract): PNG media_image1.png 470 1358 media_image1.png Greyscale While the reference discloses the claimed O3/P2 core/shell structure, the reference does not disclose or fairly suggest the instant claimed method wherein a specific stoichiometry of hydroxide precursor (i.e. Ni0.3Mn0.7(OH)2 coated Ni0.5Mn0.5(OH)2) is utilized during sodium source reaction, followed by first and continued sintering. The remaining reference coted n forms PTO-1449 and PTO-893 are considered cumulative to the prior art above. Conclusion Any inquiry concerning this communication or earlier communications from the examiner should be directed to MARK T KOPEC whose telephone number is (571)272-1319. The examiner can normally be reached Monday-Friday 9:00a-5:00p EST. 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, Robert Jones can be reached at 5712707733. 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. /MARK KOPEC/Primary Examiner, Art Unit 1762 MK July 10, 2026
Read full office action

Prosecution Timeline

May 07, 2025
Application Filed
Jul 14, 2026
Non-Final Rejection mailed — §112 (current)

Precedent Cases

Applications granted by this same examiner with similar technology

Patent 12706306
CATHODE ACTIVE MATERIAL FOR LITHIUM SECONDARY BATTERY, METHOD FOR PREPARING THE SAME, AND METHOD FOR CONTROLLING MORPHOLOGY OF THE SAME
3y 4m to grant Granted Aug 11, 2026
Patent 12703640
METHOD FOR PRODUCING HIGH-PURITY CESIUM HALIDE, AND PEROVSKITE COMPOSITE MATERIAL
1y 6m to grant Granted Aug 11, 2026
Patent 12698215
METHOD FOR MAKING PRECURSORS OF CATHODE ACTIVE MATERIALS FOR LITHIUM ION BATTERIES
2y 7m to grant Granted Aug 04, 2026
Patent 12695158
BINDERS FOR COMPOSITE ELECTROLYTES
1y 8m to grant Granted Jul 28, 2026
Patent 12686052
SINTERING COMPOSITION
4y 4m to grant Granted Jul 21, 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
84%
Grant Probability
97%
With Interview (+13.0%)
2y 3m (~1y 0m remaining)
Median Time to Grant
Low
PTA Risk
Based on 1099 resolved cases by this examiner. Grant probability derived from career allowance rate.

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