Prosecution Insights
Last updated: May 29, 2026
Application No. 17/623,578

METHODS AND COMPOSITIONS FOR HIGH-ENERGY BATTERY CATHODES

Final Rejection §102§103
Filed
Dec 28, 2021
Priority
Jun 28, 2019 — provisional 62/868,567 +2 more
Examiner
AMPONSAH, OSEI K
Art Unit
1752
Tech Center
1700 — Chemical & Materials Engineering
Assignee
VIRGINIA TECH INTELLECTUAL PROPERTIES, INC.
OA Round
5 (Final)
72%
Grant Probability
Favorable
6-7
OA Rounds
0m
Est. Remaining
99%
With Interview

Examiner Intelligence

Grants 72% — above average
72%
Career Allowance Rate
496 granted / 689 resolved
+7.0% vs TC avg
Strong +34% interview lift
Without
With
+33.6%
Interview Lift
resolved cases with interview
Typical timeline
3y 3m
Avg Prosecution
38 currently pending
Career history
749
Total Applications
across all art units

Statute-Specific Performance

§101
0.5%
-39.5% vs TC avg
§103
85.3%
+45.3% vs TC avg
§102
5.9%
-34.1% vs TC avg
§112
2.9%
-37.1% vs TC avg
Black line = Tech Center average estimate • Based on career data from 689 resolved cases

Office Action

§102 §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 . Response to Arguments Applicant’s arguments, see pages 6-11 of Remarks, filed 01-14-2026, with respect to the rejection(s) of claim(s) 1, 7-8, 12, 19-22, 30-31, 33, 35-36, 38, 40-41 under 35 U.S.C. § 102/103 have been fully considered and are persuasive. Therefore, the rejection has been withdrawn. However, upon further consideration, a new ground(s) of rejection is made in view of JPH0878009A. Claim Rejections - 35 USC § 102/103 The text of those sections of Title 35, U.S. Code not included in this action can be found in a prior Office action. Claim(s) 1, 7-8, 12, 19-22, 30-31, 33, 35-36, 38, 40-41 is/are rejected under 35 U.S.C. 102(a)(1) as anticipated by or, in the alternative, under 35 U.S.C. 103 as obvious over JPH0878009A hereinafter Inamasu. Regarding Claim 1, Inamasu teaches a positive electrode (cathode) comprising: a positive electrode active material that is made of a composite oxide having layer structure represented by a formula of LiaNibM1cM2dO2 (wherein M1 is Mn, and M2 is at least one selected from B, Si, P, Ga, Ge, Sb, Tl, Pb, and Bi) (see Abstract, paragraphs 31-32). Inamasu further teaches that M2 can be Si (paragraph 31, see Examples 1-3). Therefore, it would have been obvious to one of ordinary skill in the art to use such positive electrode active material composition before the effective filing date of the claimed invention because Inamasu discloses that such configuration can form a lithium secondary battery having improved capacity and stability in cycles (paragraphs 31-32). Regarding Claims 7-8, Inamasu teaches that the positive electrode active material is a composite oxide having layer structure represented by a formula of LiaNibM1cM2dO2 (wherein M1 is Mn, and M2 is Si) (paragraph 31, see Examples 1-3). Regarding Claim 12, Inamasu teaches that the positive electrode active material as shown above is a cobalt-free positive electrode (cathode). Regarding Claims 19-22, Inamasu teaches a method for preparing the positive electrode, and evidence by (US 2018/0316009 hereinafter Park) the method comprising: preparing a slurry containing a solvent, the active material, a conductive additive, and a binder; forming the slurry on a substrate; and drying the positive electrode (cathode) (paragraphs 18-21 of Inamasu). Park further teaches that the solvent is N-methyl-2-pyrrolidone or water; the conductive additive is carbon black; and the binder is polyvinylidene fluoride (PVDF) (paragraph 131). Regarding Claims 30-31, 33, 35-36, 38 and 40-41, Inamasu teaches a lithium secondary battery comprising the positive electrode (cathode) as described above, a negative electrode (anode), and an electrolyte (paragraph 21) and the battery having the claimed characteristics and functions (see MPEP § 2112.01). 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 OSEI K AMPONSAH whose telephone number is (571)270-3446. The examiner can normally be reached Monday - Friday, 8:00 am - 5:00 pm 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, NICHOLAS A SMITH can be reached at (571)272-8760. 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. /OSEI K AMPONSAH/ Primary Examiner, Art Unit 1752
Read full office action

Prosecution Timeline

Show 5 earlier events
Jun 03, 2025
Response after Non-Final Action
Jul 02, 2025
Non-Final Rejection mailed — §102, §103
Oct 02, 2025
Response Filed
Oct 23, 2025
Final Rejection mailed — §102, §103
Jan 14, 2026
Response after Non-Final Action
Feb 19, 2026
Final Rejection mailed — §102, §103
May 19, 2026
Request for Continued Examination
May 22, 2026
Response after Non-Final Action

Precedent Cases

Applications granted by this same examiner with similar technology

Patent 12640402
SECONDARY BATTERY
3y 7m to grant Granted May 26, 2026
Patent 12626906
POSITIVE ELECTRODE AND ELECTRICITY STORAGE DEVICE
4y 3m to grant Granted May 12, 2026
Patent 12626978
POUCH TYPE RECHARGEABLE-BATTERY
3y 11m to grant Granted May 12, 2026
Patent 12626904
Lithium Secondary Battery
1y 1m to grant Granted May 12, 2026
Patent 12620574
Lithium Secondary Battery
2y 6m to grant Granted May 05, 2026
Study what changed to get past this examiner. Based on 5 most recent grants.

Strategy Recommendation AI-generated — please review before filing

Get a prosecution strategy drawn from examiner precedents, rejection analysis, and claim mapping.
Typically takes 5-10 seconds — AI-generated, attorney review required before filing

Prosecution Projections

6-7
Expected OA Rounds
72%
Grant Probability
99%
With Interview (+33.6%)
3y 3m (~0m remaining)
Median Time to Grant
High
PTA Risk
Based on 689 resolved cases by this examiner. Grant probability derived from career allowance 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