Prosecution Insights
Last updated: October 02, 2026
Application No. 18/711,494

LITHIUM SECONDARY BATTERY AND METHOD FOR MANUFACTURING THE SAME

Non-Final OA §103
Filed
May 17, 2024
Priority
Dec 24, 2021 — RE 10-2021-0187034 +2 more
Examiner
GILLIAM, BARBARA LEE
Art Unit
Tech Center
Assignee
LG Energy Solution Ltd.
OA Round
1 (Non-Final)
24%
Grant Probability
At Risk
1-2
OA Rounds
2y 6m
Est. Remaining
38%
With Interview

Examiner Intelligence

Grants only 24% of cases
24%
Career Allowance Rate
27 granted / 112 resolved
-35.9% vs TC avg
Moderate +13% lift
Without
With
+13.4%
Interview Lift
resolved cases with interview
Typical timeline
4y 10m
Avg Prosecution
7 currently pending
Career history
124
Total Applications
across all art units

Statute-Specific Performance

§101
0.2%
-39.8% vs TC avg
§103
54.6%
+14.6% vs TC avg
§102
20.4%
-19.6% vs TC avg
§112
20.1%
-19.9% vs TC avg
Black line = Tech Center average estimate • Based on career data from 112 resolved cases

Office Action

§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 . Claims The preliminary amended claims submitted May 17, 2024, have been entered and fully considered. Claims 1-11 are pending. 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. Claims 1-11 are rejected under 35 U.S.C. 103 as being unpatentable over FUJI, US 2010/0216027 A1 in view of TAKE et al., US 2011/0165449 A1. Regarding claims 1-3, FUJI teaches a negative electrode mixture member accommodated in a bag-like separator which includes a negative electrode provided with a negative electrode current collector and a metal lithium foil (abstract). The described separator and negative electrode meet the limitations for the same. As depicted in the annotated Figure 3 of FUJI, the top portion of separator 18a meets the current limitations for the first separator and the bottom portion of separator 18a meets the current limitations for the second separator. The top and bottom portions are joined together at the edge to form the claimed sealing portion ([0030]). The negative electrode terminal is reference number 25 ([0020]). PNG media_image1.png 459 892 media_image1.png Greyscale FUJI does not teach the claimed air permeability of the separator of instant application. However, TAKE et al. teaches a porous film battery separator disposed between a positive and negative electrode (abstract). TAKE et al teaches the air permeability of the separator is higher than that of the substrate alone preferably by 10000 sec/100 cc or more when a non-porous crosslinked polymer is used ([0014]). Therefore, it would have been obvious to incorporate a crosslinked polymer layer on the surface of at least one of the separator layers of FUJI et al. with the understanding that doing so would allow a person of ordinary skill in the art to customize the air permeability of the separator. Applicant is reminded of MPEP 2144.05 I and that a prima facie case of obviousness exists when claimed ranges overlap or lie inside ranges disclosed by the prior art. Regarding claims 4, 8-11, the separator of FUJI may be sealed by means of an adhesive tape or by a heat sealing process ([0031]). Regarding claim 5, the negative electrode current collector of FUJI meets the present broad limitations of a coating layer as it is provided with through holes ([0023]). Regarding claims 6 and 7, the positive electrode active layer of FUJI is discussed in detail wherein FUJI makes clear the positive electrode active material contained in the positive electrode mixture layer can be a sulfide or a sulfur containing lithium oxide ([0041]). Conclusion The prior art made of record and not relied upon is considered pertinent to applicant's disclosure. US 2015/0162584 A1, UEMATSU et al. teach a secondary battery including an organic fiber layer accumulated on at least one of the positive and negative electrodes wherein the organic fiber layer intersects with itself (abstract; Figure 3B). US 2020/0176809 A2, TANAKA et al. teach a lithium ion secondary battery. US 8,486,160 B2, HWANG et al. teach a rechargeable battery comprising a plurality of separators. US 2014/0363729 A1, KIM et al. teach a bi-cell for a secondary battery wherein edges of an upper separator and edges of a lower separator are attached to each other to form fused portions (abstract). WO 2012/060604 A2, SEO et al teach a heat-resistant separator. Any inquiry concerning this communication or earlier communications from the examiner should be directed to BARBARA GILLIAM whose telephone number is (571)272-1330. The examiner can normally be reached Monday-Thursday 7:00 AM - 4:00 PM& 2nd Friday 7:00 AM - 3:00 PM. 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, Srilakshmi Kumar can be reached at 571-272-7769. 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. BARBARA L GILLIAM Supervisory Patent Examiner Art Unit 1727 /BARBARA L GILLIAM/Supervisory Patent Examiner, Art Unit 1727
Read full office action

Prosecution Timeline

May 17, 2024
Application Filed
Sep 15, 2026
Non-Final Rejection mailed — §103 (current)

Precedent Cases

Applications granted by this same examiner with similar technology

Patent 12738511
FUEL CELL MEMBRANE HUMIDIFIER
2y 8m to grant Granted Sep 15, 2026
Patent 12689039
ELECTRICAL COLLECTOR BODY OF SECONDARY BATTERY AND SECONDARY BATTERY
4y 3m to grant Granted Jul 21, 2026
Patent 12651742
Positive Electrode Active Material, Positive Electrode Including the Positive Electrode Active Material, and Secondary Battery Including the Positive Electrode
3y 3m to grant Granted Jun 09, 2026
Patent 12626917
POSITIVE ELECTRODE ACTIVE MATERIAL FOR NONAQUEOUS ELECTROLYTE SECONDARY BATTERIES, AND NONAQUEOUS ELECTROLYTE SECONDARY BATTERY
3y 2m to grant Granted May 12, 2026
Patent 12431493
NONAQUEOUS MAGNESIUM BATTERY
2y 10m to grant Granted Sep 30, 2025
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
24%
Grant Probability
38%
With Interview (+13.4%)
4y 10m (~2y 6m remaining)
Median Time to Grant
Low
PTA Risk
Based on 112 resolved cases by this examiner. Grant probability derived from career allowance rate.

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