Prosecution Insights
Last updated: April 19, 2026
Application No. 18/277,148

LITHIUM PRIMARY BATTERY AND NONAQUEOUS ELECTROLYTE SOLUTION USED IN SAME

Non-Final OA §103§112
Filed
Aug 14, 2023
Examiner
CONLEY, OI K
Art Unit
1752
Tech Center
1700 — Chemical & Materials Engineering
Assignee
Panasonic Intellectual Property Management Co., Ltd.
OA Round
1 (Non-Final)
70%
Grant Probability
Favorable
1-2
OA Rounds
3y 7m
To Grant
77%
With Interview

Examiner Intelligence

Grants 70% — above average
70%
Career Allow Rate
597 granted / 858 resolved
+4.6% vs TC avg
Moderate +8% lift
Without
With
+7.8%
Interview Lift
resolved cases with interview
Typical timeline
3y 7m
Avg Prosecution
38 currently pending
Career history
896
Total Applications
across all art units

Statute-Specific Performance

§101
0.2%
-39.8% vs TC avg
§103
37.2%
-2.8% vs TC avg
§102
34.5%
-5.5% vs TC avg
§112
21.5%
-18.5% vs TC avg
Black line = Tech Center average estimate • Based on career data from 858 resolved cases

Office Action

§103 §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 . Priority Acknowledgment is made of applicant’s claim for foreign priority under 35 U.S.C. 119 (a)-(d). Information Disclosure Statement The information disclosure statement (IDS) submitted on 8/14/23 is considered by the examiner. Drawings The drawings submitted on 8/14/23 has been considered. 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. Claim 2 is 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. Specifically, the claim limitation “a mass ratio …is 1/3 or more and 50 or less,” is unclear. The Applicant have not given a ratio or a proportion for comparison of the first component relative to the second component; the range of 1/3 or more and 50 or less cannot be a ratio. Appropriate corrections or further clarification are required. Claim 8 is 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. Specifically, the claims are to a non-aqueous electrolyte, however, the claim limitations include battery components which is not part of the non-aqueous electrolyte. Appropriate corrections are required. As best understood of claim 8, please see the rejections below. Claim Rejections - 35 USC § 103 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 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. Claim(s) 1, 3, 5-8 is/are rejected under 35 U.S.C. 103 as being unpatentable over Wang et al. (US Publication 20170018803) in view of Mosallanejad (Phthalimide Derivatives: New Promising Additives for Functional Electrolyte in Lithium-Ion Batteries) in further view of Ehrlich (US Patent 6,203,949). Regarding claims 1, 5, 6, 8, the Wang et al. reference discloses a lithium battery comprising a positive electrode, a negative electrode, and a non-aqueous electrolyte, wherein, the positive electrode comprises an electrode mixture including manganese dioxide (P29 and P37). The non-aqueous electrolyte comprises additive which includes an isocyanate compound with a concentration of 5 mass% or less (P23). The Wang discloses LiPF6 salt in non-aqueous electrolyte comprising ethylene carbonate and propylene carbonate but does not explicitly disclose a phthalimide compound. However, Mosallanejad reference discloses a phthalimide to be a new promising additive for lithium batteries to be candidates for SEI-forming additives protecting the anode in systems utilizing ethylene carbonate and propylene carbonate and LiPF6 salt electrolytes. Therefore, it would have been obvious to one of ordinary skill in the art before the effective filing date of the invention to incorporate phthalimide additive to protect the anode by forming SEI film disclosed by the Mosallanejad reference for the battery system utilizing ethylene carbonate and propylene carbonate with LiPF6 electrolytes in order to sustain battery component functions without compromising the anode and potentially short circuiting the battery. In addition, the Wang reference discloses the negative electrode includes carbon but does not explicitly teach metal lithium, however, Ehrich reference discloses the conventional anode materials are carbon and lithium. That is, substitution of known equivalent structures involves only ordinary skill in the art. In re Fout 213 USPQ 532 (CCPA 1982); In re Susi 169 USPQ 423 (CCPA 1971); In re Siebentritt 152 USPQ 618 (CCPA 1967); In re Ruff 118 USPQ 343 (CCPA 1958). When a patent claims a structure already known in the prior art that is altered by the mere substitution of one element for another known in the field, the combination must do more than yield a predictable result. KSR v. Teleflex Furthermore, the Wang in view of Mosallanejad in further view of Ehrlich (herein referred to as modified Wang reference) discloses a lithium ion battery but is silent in disclosing a primary battery, however, it is noted that the claim limitation “primary” is “intended use” language and it has been held that a recitation with respect to the manner in which a claimed apparatus is intended to be employed does not differentiate the claimed apparatus from a prior art apparatus satisfying the claimed structural limitations. Ex parte Masham, 2 USPQ2d 1647 (1987). Regarding claim 3, the Wang reference discloses the isocyanate compound includes isocyanate group comprising C1-C2 aromatic hydrocarbon group. Regarding claim 7, the modified Wang reference discloses at least one of cyclic imide compound but silent on phthalic acid ester. However, since the claim recites multiple compounds in an alternative manner. Thus as long as one of the compounds are disclosed by the prior art such as cyclic imide compound. It is unnecessary to address the rest of the claimed limitations such as phthalic acid ester Claim(s) 4 is/are rejected under 35 U.S.C. 103 as being unpatentable over Wang et al. (US Publication 20170018803) in view of Mosallanejad (Phthalimide Derivatives: New Promising Additives for Functional Electrolyte in Lithium-Ion Batteries) in further view of Ehrlich (US Patent 6,203,949) in furthest view of Jiang (CN101826635). Regarding claim 4, the modified Wang reference discloses the claimed invention above and further incorporated herein. The modified Wang reference discloses phenyl isocyanate but does not explicitly disclose the isocyanate compound includes at least one selected from the group consisting of hexyl isocyanate, hexamethylene diisocyanate, 1,3-bis(isocyanatomethyl) cyclohexane, and isophorone diisocyanate. However, the Jiang reference discloses that the same electrolytes as that of the modified Wang reference. The Jiang reference discloses the electrolytes can comprise additives to modify the electrolyte, specifically, electrolyte stabilizing additives to stabilize the electrolyte at battery operating temperature. The electrolyte stabilizing additives include phenyl isocyanate and hexamethylene isocyanate (P71; claimed hexamethylene diisocyanate). Therefore, it would have been obvious to one of ordinary skill in the art before the effective filing date of the invention to incorporate hexamethylene isocyanate for teachings of phenyl isocyanate for stabilizing the electrolyte disclosed by the Jiang reference for the phenyl isocyanate in the same electrolyte disclosed by the modified Wang reference for battery stability at operating temperatures. Conclusion Any inquiry concerning this communication or earlier communications from the examiner should be directed to HELEN OI CONLEY whose telephone number is (571)272-5162. The examiner can normally be reached 8:30 am - 5:00 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, Nicholas Smith can be reached at 5712728760. 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. /Helen Oi K CONLEY/Primary Examiner, Art Unit 1752
Read full office action

Prosecution Timeline

Aug 14, 2023
Application Filed
Feb 20, 2026
Non-Final Rejection — §103, §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
70%
Grant Probability
77%
With Interview (+7.8%)
3y 7m
Median Time to Grant
Low
PTA Risk
Based on 858 resolved cases by this examiner. Grant probability derived from career allow rate.

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