Prosecution Insights
Last updated: April 19, 2026
Application No. 18/272,708

Lithium Secondary Battery Into Which Electrolytic Solution Can Be Additionally Injected

Non-Final OA §112
Filed
Jul 17, 2023
Examiner
MCCONNELL, WYATT P
Art Unit
1727
Tech Center
1700 — Chemical & Materials Engineering
Assignee
LG Energy Solution, Ltd.
OA Round
1 (Non-Final)
80%
Grant Probability
Favorable
1-2
OA Rounds
2y 8m
To Grant
90%
With Interview

Examiner Intelligence

Grants 80% — above average
80%
Career Allow Rate
829 granted / 1031 resolved
+15.4% vs TC avg
Moderate +9% lift
Without
With
+9.3%
Interview Lift
resolved cases with interview
Typical timeline
2y 8m
Avg Prosecution
23 currently pending
Career history
1054
Total Applications
across all art units

Statute-Specific Performance

§101
0.3%
-39.7% vs TC avg
§103
44.7%
+4.7% vs TC avg
§102
27.3%
-12.7% vs TC avg
§112
23.8%
-16.2% vs TC avg
Black line = Tech Center average estimate • Based on career data from 1031 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 . 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. Claims 6 and 11 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. Claim 6 recites the relative term “near” without providing sufficient context to determine the difference between an arrangement considered to be near compared to other arrangement such as those that are not close enough to be near, those that are so far as to be considered distant, etc., Claim 11 recites the relative term “weak” without sufficient context to determine whether a part is weak, is not weak, is strong, etc., Allowable Subject Matter Claims 1-5, 7-10, and 12-17 are allowed. The prior art discloses secondary batteries comprising an electrode assembly and electrolyte held inside a battery case, where the battery is configured to have replenishing electrolyte injected into the case under certain conditions. See e.g., U.S. Patent Application Publication No. 2019/0006635. The prior art, however, is silent regarding providing a rupture member configured to be deformed by a temperature change to form a hole in a packaging member holding the additional electrolyte so that the electrolyte can be injected. 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
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Prosecution Timeline

Jul 17, 2023
Application Filed
Feb 04, 2026
Non-Final Rejection — §112 (current)

Precedent Cases

Applications granted by this same examiner with similar technology

Patent 12603347
METHOD FOR DESIGNING BATTERY MODULE
2y 5m to grant Granted Apr 14, 2026
Patent 12592380
BATTERY ELECTRODE COMPOSITION COMPRISING CARBON AND SILICON WITH SPECIFIC PROPERTIES FOR SUPERIOR PERFORMANCE
2y 5m to grant Granted Mar 31, 2026
Patent 12592413
NEGATIVE ELECTRODE FOR LITHIUM SECONDARY BATTERY
2y 5m to grant Granted Mar 31, 2026
Patent 12586862
BATTERY PACK
2y 5m to grant Granted Mar 24, 2026
Patent 12586786
CORE-SHELL PARTICLE AND LITHIUM ION BATTERY
2y 5m to grant Granted Mar 24, 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
80%
Grant Probability
90%
With Interview (+9.3%)
2y 8m
Median Time to Grant
Low
PTA Risk
Based on 1031 resolved cases by this examiner. Grant probability derived from career allow rate.

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