Prosecution Insights
Last updated: April 19, 2026
Application No. 18/113,329

Lithium Secondary Battery with Inhibited Exsolution of Transition Metal

Non-Final OA §112§DP
Filed
Feb 23, 2023
Examiner
WEST, ROBERT GENE
Art Unit
1721
Tech Center
1700 — Chemical & Materials Engineering
Assignee
LG Energy Solution, Ltd.
OA Round
1 (Non-Final)
77%
Grant Probability
Favorable
1-2
OA Rounds
3y 4m
To Grant
99%
With Interview

Examiner Intelligence

Grants 77% — above average
77%
Career Allow Rate
76 granted / 99 resolved
+11.8% vs TC avg
Strong +25% interview lift
Without
With
+24.9%
Interview Lift
resolved cases with interview
Typical timeline
3y 4m
Avg Prosecution
56 currently pending
Career history
155
Total Applications
across all art units

Statute-Specific Performance

§103
55.4%
+15.4% vs TC avg
§102
19.3%
-20.7% vs TC avg
§112
23.8%
-16.2% vs TC avg
Black line = Tech Center average estimate • Based on career data from 99 resolved cases

Office Action

§112 §DP
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 . If status of the application as subject to 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 a new ground of rejection if the prior art relied upon, and the rationale supporting the rejection, would be the same under either status. Status of Claims Claims 1-20 are pending in the application and are presently examined. Double Patenting Claims 1-20 are provisionally rejected on the ground of nonstatutory double patenting as being unpatentable over claims 1-16 of copending Application Number 18/112,796 (796). Although the claims at issue are not identical, they are not patentably distinct from each other. All distinctions between present claims 1 & 19 and application 796 are taught by US20210288320A1 (Kawada), as discussed in the Allowable Subject Matter section below. This is a provisional nonstatutory double patenting rejection because the patentably indistinct claims have not in fact been patented. The nonstatutory double patenting rejection is based on a judicially created doctrine grounded in public policy (a policy reflected in the statute) so as to prevent the unjustified or improper timewise extension of the “right to exclude” granted by a patent and to prevent possible harassment by multiple assignees. A nonstatutory double patenting rejection is appropriate where the conflicting claims are not identical, but at least one examined application claim is not patentably distinct from the reference claim(s) because the examined application claim is either anticipated by, or would have been obvious over, the reference claim(s). See, e.g., In re Berg, 140 F.3d 1428, 46 USPQ2d 1226 (Fed. Cir. 1998); In re Goodman, 11 F.3d 1046, 29 USPQ2d 2010 (Fed. Cir. 1993); In re Longi, 759 F.2d 887, 225 USPQ 645 (Fed. Cir. 1985); In re Van Ornum, 686 F.2d 937, 214 USPQ 761 (CCPA 1982); In re Vogel, 422 F.2d 438, 164 USPQ 619 (CCPA 1970); In re Thorington, 418 F.2d 528, 163 USPQ 644 (CCPA 1969). A timely filed terminal disclaimer in compliance with 37 CFR 1.321(c) or 1.321(d) may be used to overcome an actual or provisional rejection based on nonstatutory double patenting provided the reference application or patent either is shown to be commonly owned with the examined application, or claims an invention made as a result of activities undertaken within the scope of a joint research agreement. See MPEP § 717.02 for applications subject to examination under the first inventor to file provisions of the AIA as explained in MPEP § 2159. See MPEP § 2146 et seq. for applications not subject to examination under the first inventor to file provisions of the AIA . A terminal disclaimer must be signed in compliance with 37 CFR 1.321(b). The filing of a terminal disclaimer by itself is not a complete reply to a nonstatutory double patenting (NSDP) rejection. A complete reply requires that the terminal disclaimer be accompanied by a reply requesting reconsideration of the prior Office action. Even where the NSDP rejection is provisional the reply must be complete. See MPEP § 804, subsection I.B.1. For a reply to a non-final Office action, see 37 CFR 1.111(a). For a reply to final Office action, see 37 CFR 1.113(c). A request for reconsideration while not provided for in 37 CFR 1.113(c) may be filed after final for consideration. See MPEP §§ 706.07(e) and 714.13. The USPTO Internet website contains terminal disclaimer forms which may be used. Please visit www.uspto.gov/patent/patents-forms. The actual filing date of the application in which the form is filed determines what form (e.g., PTO/SB/25, PTO/SB/26, PTO/AIA /25, or PTO/AIA /26) should be used. A web-based eTerminal Disclaimer may be filled out completely online using web-screens. An eTerminal Disclaimer that meets all requirements is auto-processed and approved immediately upon submission. For more information about eTerminal Disclaimers, refer to www.uspto.gov/patents/apply/applying-online/eterminal-disclaimer. Claim Objections Claims 2-3 & 5 are objected to because of the following informalities. Claim 2 recites “p, q, and r are each independently an integer ranging from 0 to 2”. This “integer” was introduced in claim 1, so “an integer” should be amended to “the integer”. Claim 3 recites “m and n are each independently an integer ranging from 10 to 200”. This phrase was introduced in claim 1, so it should be deleted. Claim 5 recites “the electrolyte additive has a weight average molecular weight of 5,000 to 30,000 g/mole”. The “weight average molecular weight” was introduced in claim 1. Examiner suggests the following amendment: “the is 5,000 to 30,000 g/mole” 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. Claims 1-20 are rejected under 35 U.S.C. 112(b) as being indefinite for failing to particularly point out and distinctly claim the subject matter which the inventor(s) regard as the invention. Claims 1 & 19 show an asterisk (*) at both ends of Formula 1, but fail to define the asterisk. The specification provides the following definition for the asterisk: “In addition, unless specifically stated otherwise, the symbol ‘*’ refers to a bond formed between the same or different atoms or the terminals of the formulas.” If * is a bond, it is unclear what atoms are bonded. If * is a terminal, it is unclear what chemical element the polymer terminates with. Claims 2-18 & 20 are rejected due to their dependence on claims 1 or 19. Claim 14 recites “the Formula 3”. There is insufficient antecedent basis for this limitation in this claim. Allowable Subject Matter Claims 1-20 are allowable over prior art, and will be allowed if the above rejections and objections are overcome. The following is a statement of reasons for allowable subject matter: US20210288320A1 (Kawada) and JP2953047B2 (Tosha) are the closest prior art of record. Kawada teaches the following claim 1 limitations. The claims are in bold font, and the prior art is in parentheses. A lithium secondary battery (paragraphs 56-57 & 94) comprising: an electrode assembly comprising a positive electrode, a negative electrode, and a separator interposed between the positive electrode and the negative electrode (paragraph 85-57; figure 1); and an electrolyte composition comprising a lithium salt… and a non-aqueous solvent (paragraphs 85-86), wherein the positive electrode comprises a positive electrode active layer containing an irreversible additive represented by the Formula 2… [Formula 2] LiaMbM’1-bOc (paragraph 94: Li5FeO4) wherein… M comprises one or more of Co, Ni, Mn, or Fe, M’ comprises one or more of Co, Ni, Mn, Fe, Al, Mg, Zn, or Ti, provided that M and M’ are different from each other, and a, b, and c are in a range of 1.50 ≤ a ≤ 6.5, 0 ≤ b ≤ 1, and 1.5 ≤ c ≤ 4.5, respectively. Claims 1 & 19 also recite: an electrolyte composition comprising… an electrolyte additive having a unit represented by the Formula 1… the electrolyte additive has a weight average molecular weight of less than 40,000 g/mole: [Formula 1] PNG media_image1.png 601 1036 media_image1.png Greyscale wherein: R1, R2, and R3 are each independently hydrogen or an alkyl group having 1 to 6 carbon atoms, R4 and R5 are each independently an alkylene group having 1 to 6 carbon atoms, p, q, and r are each independently an integer ranging from 0 to 5, m and n are each independently an integer ranging from 10 to 200, Tosha teaches the following chemical (page 1 of original patent): PNG media_image2.png 132 674 media_image2.png Greyscale This chemical is similar to presently claimed monomer n in Formula 1. Tosha, however, fails to teach monomer m, and Tosha is not analogous. Claims 2-18 and 20 are allowable due to their dependence on claims 1 or 19. Any comments considered necessary by applicant must be submitted no later than the payment of the issue fee and, to avoid processing delays, should preferably accompany the issue fee. Such submissions should be clearly labeled “Comments on Statement of Reasons for Allowance.” Conclusion Any inquiry concerning this communication or earlier communications from the examiner should be directed to ROBERT WEST whose telephone number is 703-756-1363 and email address is Robert.West@uspto.gov. The examiner can normally be reached Monday-Friday 10 am - 7 pm ET. 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, Allison Bourke can be reached at 303-297-4684. 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. /R.G.W./Examiner, Art Unit 1721 /ALLISON BOURKE/Supervisory Patent Examiner, Art Unit 1721
Read full office action

Prosecution Timeline

Feb 23, 2023
Application Filed
Oct 24, 2025
Non-Final Rejection — §112, §DP (current)

Precedent Cases

Applications granted by this same examiner with similar technology

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CONDUCTIVE MATERIAL PASTE FOR ALL-SOLID-STATE SECONDARY BATTERY ELECTRODE
2y 5m to grant Granted Apr 14, 2026
Patent 12597648
BATTERY ASSEMBLY, METHOD OF PREPARATION, AND THERMAL CONTROL THEREOF
2y 5m to grant Granted Apr 07, 2026
Patent 12597594
LITHIUM MANGANESE COMPOSITE OXIDE FOR A LITHIUM SECONDARY BATTERY CATHODE ACTIVE MATERIAL
2y 5m to grant Granted Apr 07, 2026
Patent 12592414
SOLID ELECTROLYTE MEMBRANE, AND SOLID-STATE LITHIUM METAL BATTERY, BATTERY MODULE, BATTERY PACK, AND APPARATUS CONTAINING SUCH SOLID ELECTROLYTE MEMBRANE
2y 5m to grant Granted Mar 31, 2026
Patent 12586867
POROUS COMPOSITE SEPARATOR FOR SECONDARY BATTERY AND LITHIUM SECONDARY BATTERY INCLUDING THE SAME
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
77%
Grant Probability
99%
With Interview (+24.9%)
3y 4m
Median Time to Grant
Low
PTA Risk
Based on 99 resolved cases by this examiner. Grant probability derived from career allow rate.

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