Prosecution Insights
Last updated: October 01, 2026
Application No. 18/711,567

FORMATION OF PHOSPHORUS-RICH SOLID ELECTROLYTE INTERPHASE

Non-Final OA §102
Filed
May 17, 2024
Priority
Nov 19, 2021 — provisional 63/281,418 +1 more
Examiner
TALBOT, BRIAN K
Art Unit
Tech Center
Assignee
The Regents of the University of California
OA Round
1 (Non-Final)
59%
Grant Probability
Moderate
1-2
OA Rounds
11m
Est. Remaining
90%
With Interview

Examiner Intelligence

Grants 59% of resolved cases
59%
Career Allowance Rate
699 granted / 1182 resolved
-0.9% vs TC avg
Strong +31% interview lift
Without
With
+30.9%
Interview Lift
resolved cases with interview
Typical timeline
3y 3m
Avg Prosecution
47 currently pending
Career history
1240
Total Applications
across all art units

Statute-Specific Performance

§101
0.3%
-39.7% vs TC avg
§103
64.3%
+24.3% vs TC avg
§102
10.7%
-29.3% vs TC avg
§112
21.1%
-18.9% vs TC avg
Black line = Tech Center average estimate • Based on career data from 1182 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 . Claims 1-20 remain in the application for prosecution thereof. 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. Claims 1-20 are rejected under 35 U.S.C. 102(a)(1) as being clearly anticipated by Zhang et al. “Performance Leap of Lithium Metal Batteries in LIPF6 carbonate electrolyte by a phosphorus pentoxide (P2O5) acid scavenger”. Zhang et al. “Performance Leap of Lithium Metal Batteries in LIPF6 carbonate electrolyte by a phosphorus pentoxide (P2O5) acid scavenger” teaches a battery including a lithium anode metal, a cathode (NMC) and an electrolyte including LiPF6 and P2O5 (abstract and introduction). Regarding claim 2, a lithium film of 50 microns is utilized (electrode preparation – pg. 36680). Regarding claim 3, the cathode includes NMC622 (electrode preparation – pg. 36680). Regarding claim 4, the electrolyte includes LiPF6 (abstract and introduction). Regarding claims 5,19 and 20, 5 wt% of P2O5 is utilized with the LiPF6 electrolyte (pg. 36680 – lines 17-21). Regarding claim 8, a lithium metal SEI is formed as a passivation layer due to the inclusion of P2O5 (pp. 36682). Regarding claims 11 and 16, the inclusion of P2O5 scavenges HF and therefore this is not a degradation product and HF is not a parasitic reaction (pp. 36680). Regarding claims 6,7,9,10,12-15,17 and 18, the claims recite characteristics of the battery from the inclusion of P2O5 in the LiPF6 electrolyte and hence these would be inherently obtained since Zhang et al. “Performance Leap of Lithium Metal Batteries in LIPF6 carbonate electrolyte by a phosphorus pentoxide (P2O5) acid scavenger” teaches the same. Any inquiry concerning this communication or earlier communications from the examiner should be directed to BRIAN K TALBOT whose telephone number is (571)272-1428. The examiner can normally be reached Monday -Friday 7-4PM. 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, MICHAEL CLEVELAND can be reached at 571-272-1418. 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. /BRIAN K TALBOT/Primary Examiner, Art Unit 1712
Read full office action

Prosecution Timeline

May 17, 2024
Application Filed
Aug 20, 2026
Non-Final Rejection mailed — §102 (current)

Precedent Cases

Applications granted by this same examiner with similar technology

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METHOD OF COATING METALLIC COMPONENT OF A ROLLING-ELEMENT BEARING OR A PLAIN BEARING
6y 11m to grant Granted Sep 22, 2026
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Patent 12695120
LITHIUM-ION BATTERY
3y 1m to grant Granted Jul 28, 2026
Patent 12689055
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Patent 12681353
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4y 11m to grant Granted Jul 14, 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
59%
Grant Probability
90%
With Interview (+30.9%)
3y 3m (~11m remaining)
Median Time to Grant
Low
PTA Risk
Based on 1182 resolved cases by this examiner. Grant probability derived from career allowance rate.

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