Prosecution Insights
Last updated: April 18, 2026
Application No. 18/249,128

ELECTROLYTE FOR NA-ION BATTERY

Non-Final OA §102§112
Filed
Apr 14, 2023
Examiner
LY, KENDRA
Art Unit
1749
Tech Center
1700 — Chemical & Materials Engineering
Assignee
Tiamat
OA Round
1 (Non-Final)
58%
Grant Probability
Moderate
1-2
OA Rounds
3y 0m
To Grant
76%
With Interview

Examiner Intelligence

Grants 58% of resolved cases
58%
Career Allow Rate
329 granted / 570 resolved
-7.3% vs TC avg
Strong +18% interview lift
Without
With
+18.4%
Interview Lift
resolved cases with interview
Typical timeline
3y 0m
Avg Prosecution
37 currently pending
Career history
607
Total Applications
across all art units

Statute-Specific Performance

§103
61.4%
+21.4% vs TC avg
§102
14.0%
-26.0% vs TC avg
§112
21.2%
-18.8% vs TC avg
Black line = Tech Center average estimate • Based on career data from 570 resolved cases

Office Action

§102 §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 . Election/Restrictions Applicant's election with traverse of Group 1, claims 16-24 in the reply filed on 12/30/2025 is acknowledged. The traversal is on the ground that ISA did not consider there to be a lack of unity. This is not found persuasive because MPEP 1893.03(d) states “when making a lack of unity requirement, the examiner must (1) list the different group of claims and (2) explain why each group lacks unity with each other group (i.e., why there is no single general inventive concept) specifically describing the unique special technical feature in each group. The examiner may make a lack of unity requirement in a national stage application even if no such requirement was made by the ISA or IPEA.” The requirement is still deemed proper and is therefore made FINAL. Claims 25-30 are withdrawn from further consideration pursuant to 37 CFR 1.142(b), as being drawn to a nonelected invention/group, there being no allowable generic or linking claim. Applicant timely traversed the restriction (election) requirement in the reply filed on 12/30/2025. Claim Objections Claims 17 and 22 are objected due to the following informalities: Claim 17 contains several chemical formulas having typographical errors. For example: NaClO4 should be corrected to --NaClO4--. Another example: NaPF6 should be corrected to --NaPF6--. Correct all occurrences of incorrect chemical formulas. Claim 22 recites a chemical formula that has a typographical error. The correct general formula for C1-C8 nitrile is: NC-(CH2)n-CN. Appropriate correction is required. 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. Regarding claims 22-23, the phrase "preferably" renders the claim indefinite because it is unclear what is minimally required in claims 22-23. Claim Rejections - 35 USC § 102 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 16-24 are rejected under 35 U.S.C. 102(a)(1) as being anticipated by EP’191 (EP 3471191). Regarding claims 16-20, [0013] of EP’191 discloses a non-aqueous electrolyte comprising: at least a sodium salt, at least one a solvent, and a combination of additives. [0023] lists suitable sodium salt including NaClO4, NaPF6, NaBF4, NaTFSI, NaFSI (claim 17). [0013] and [0020] lists suitable solvents including ethylene carbonate (EC), propylene carbonate (PC), dimethyl carbonate (DMC), diethyl carbonate (DEC), and ethyl methyl carbonate (EMC) (claims 18-19). The combination of additives includes NaODFB, at least a nitrile, 1,3-propane sulfone or ethylene sulfate, and vinylene carbonate [0013], [0025] (claim 20). Regarding claims 21-23, [0013] teaches at least 1 nitrile and its chemical formula and [0016] lists suitable nitriles. Regarding claim 24, see [0017]. Conclusion Any inquiry concerning this communication or earlier communications from the examiner should be directed to KENDRA LY whose telephone number is (571)270-7060. The examiner can normally be reached Monday-Friday, 8:00-5:00PM. 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, Katelyn B Smith can be reached at 571-270-5545. 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. /KENDRA LY/Primary Examiner, Art Unit 1749
Read full office action

Prosecution Timeline

Apr 14, 2023
Application Filed
Mar 31, 2026
Non-Final Rejection — §102, §112 (current)

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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
58%
Grant Probability
76%
With Interview (+18.4%)
3y 0m
Median Time to Grant
Low
PTA Risk
Based on 570 resolved cases by this examiner. Grant probability derived from career allow rate.

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