Prosecution Insights
Last updated: October 02, 2026
Application No. 18/439,278

ADDITIVE FOR LITHIUM-ION BATTERY ELECTROLYTE, ELECTROLYTE, AND LITHIUM-ION SECONDARY BATTERY

Non-Final OA §102§103
Filed
Feb 12, 2024
Priority
Sep 30, 2021 — CN 202111166334.2 +1 more
Examiner
MCCONNELL, WYATT P
Art Unit
Tech Center
Assignee
Murata Manufacturing Co., Ltd.
OA Round
1 (Non-Final)
81%
Grant Probability
Favorable
1-2
OA Rounds
0m
Est. Remaining
90%
With Interview

Examiner Intelligence

Grants 81% — above average
81%
Career Allowance Rate
853 granted / 1058 resolved
+20.6% vs TC avg
Moderate +9% lift
Without
With
+9.4%
Interview Lift
resolved cases with interview
Typical timeline
2y 7m
Avg Prosecution
34 currently pending
Career history
1072
Total Applications
across all art units

Statute-Specific Performance

§101
0.7%
-39.3% vs TC avg
§103
48.3%
+8.3% vs TC avg
§102
23.3%
-16.7% vs TC avg
§112
24.1%
-15.9% vs TC avg
Black line = Tech Center average estimate • Based on career data from 1058 resolved cases

Office Action

§102 §103
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 . 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. Claim(s) 1-4 and 7-10 is/are rejected under 35 U.S.C. 102(a)(1) as being anticipated by Japanese Patent Publication No. 2005228683 to Onda, citing to both the enclosed original document for figures and machine translation for paragraph numbers (“Onda”). Regarding claims 1-4 and 8 and 9, Onda discloses electrolytes for lithium ion batteries that include a cyclic and/or linear carbonate solvent (ethylene carbonate, propylene carbonate and butylene carbonate preferred), a lithium salt (LiPF6 preferred), an additive according to the following chemical formula with tri(trifluorotolyl)phosphate which corresponds to the first structure shown in claim 3 a preferred example. Onda at paragraphs [0009], [0022] and [0023]. PNG media_image1.png 402 886 media_image1.png Greyscale Further regarding claim 7, it is noted that the second additive remains optional. Thus, although claim 7 narrows the allowed amount when the second additive is present, it does not alter the fact that the second additive remains optional. Further regarding claim 10, the batteries made with those electrolytes include a positive electrode, separator, and negative electrode stacked in that order and wound with the separator being injected with the electrolyte solution. Id. at paragraph [0046]. Claim Rejections - 35 USC § 103 The following is a quotation of 35 U.S.C. 103 which forms the basis for all obviousness rejections set forth in this Office action: A patent for a claimed invention may not be obtained, notwithstanding that the claimed invention is not identically disclosed as set forth in section 102, if the differences between the claimed invention and the prior art are such that the claimed invention as a whole would have been obvious before the effective filing date of the claimed invention to a person having ordinary skill in the art to which the claimed invention pertains. Patentability shall not be negated by the manner in which the invention was made. The factual inquiries for establishing a background for determining obviousness under 35 U.S.C. 103 are summarized as follows: 1. Determining the scope and contents of the prior art. 2. Ascertaining the differences between the prior art and the claims at issue. 3. Resolving the level of ordinary skill in the pertinent art. 4. Considering objective evidence present in the application indicating obviousness or nonobviousness. Claim(s) 5 and 6 is/are rejected under 35 U.S.C. 103 as being unpatentable over Onda. Onda is applied as described above. Onda discloses including the additive in the electrolyte in an amount ranging from 0.1-20% in order to achieve reduced flammability while maintaining good viscosity and dissociation characteristics. Onda at paragraph [0016]. This range overlaps with the recited range thereby rendering it obvious. Any inquiry concerning this communication or earlier communications from the examiner should be directed to WYATT P MCCONNELL whose telephone number is (571)270-7531. The examiner can normally be reached 9am to 5pm M-F. 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, Barbara Gilliam can be reached at 571-272-1330. 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. /WYATT P MCCONNELL/ Examiner, Art Unit 1727
Read full office action

Prosecution Timeline

Feb 12, 2024
Application Filed
Jun 30, 2026
Non-Final Rejection mailed — §102, §103 (current)

Precedent Cases

Applications granted by this same examiner with similar technology

Patent 12749744
SECONDARY BATTERY
3y 1m to grant Granted Sep 29, 2026
Patent 12744275
Battery Module, Battery Pack and Electric Vehicle
3y 7m to grant Granted Sep 22, 2026
Patent 12738538
CROSS-LINKING AGENT FOR QUASI-SOLID ELECTROLYTE, QUASI-SOLID ELECTROLYTE COMPRISING SAME, AND SECONDARY BATTERY USING SAME
2y 9m to grant Granted Sep 15, 2026
Patent 12738581
BATTERY CELL, BATTERY, POWER CONSUMPTION DEVICE, AND MANUFACTURING METHOD FOR BATTERY CELL
2y 6m to grant Granted Sep 15, 2026
Patent 12731850
BATTERY HOUSING FOR TRACTION BATTERY HAVING IMPROVED MAINTENANCE POSSIBILITY AND TRACTION BATTERY FOR MOTOR VEHICLE
3y 6m to grant Granted Sep 08, 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

1-2
Expected OA Rounds
81%
Grant Probability
90%
With Interview (+9.4%)
2y 7m (~0m remaining)
Median Time to Grant
Low
PTA Risk
Based on 1058 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