Prosecution Insights
Last updated: October 01, 2026
Application No. 18/285,489

NOVEL ADDITIVE FOR NON-AQUEOUS ELECTROLYTE SOLUTION AND LITHIUM SECONDARY BATTERY COMPRISING SAME

Non-Final OA §DP
Filed
Oct 03, 2023
Priority
Mar 17, 2022 — RE 10-2022-0033306 +2 more
Examiner
CHAN, HENG M
Art Unit
1725
Tech Center
1700 — Chemical & Materials Engineering
Assignee
LG Energy Solution Ltd.
OA Round
2 (Non-Final)
61%
Grant Probability
Moderate
2-3
OA Rounds
5m
Est. Remaining
93%
With Interview

Examiner Intelligence

Grants 61% of resolved cases
61%
Career Allowance Rate
249 granted / 408 resolved
-4.0% vs TC avg
Strong +32% interview lift
Without
With
+31.9%
Interview Lift
resolved cases with interview
Typical timeline
3y 5m
Avg Prosecution
14 currently pending
Career history
417
Total Applications
across all art units

Statute-Specific Performance

§101
0.7%
-39.3% vs TC avg
§103
49.2%
+9.2% vs TC avg
§102
19.3%
-20.7% vs TC avg
§112
25.8%
-14.2% vs TC avg
Black line = Tech Center average estimate • Based on career data from 408 resolved cases

Office Action

§DP
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 . Status of Application Applicant’s amendments and remarks filed 6/26/2026 have been acknowledged. Claims 1-20 are pending. This second non-final is being sent to present a missed double patenting rejection. Double Patenting 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. Claims 4-6, 8-11, 18, and 20 are provisionally rejected on the ground of nonstatutory double patenting as being unpatentable over claim 1, 3, 4, 5, 11, 12, and 14-17 of copending Application No. 18/710,689 (reference application). Although the claims at issue are not identical, they are not patentably distinct from each other because claim 1 of the conflicting application corresponds to claim 4 of the present invention, meeting the claimed Formula 1. The compounds described in claim 3 of the reference application encompasses the structures required by claim 18 of the counterpart. Structural Formulas 7-9 of claim 4 of the conflicting application match Structural Formulas 25, 26, and 31 of claim 20 of the present application, respectively. The electrolyte additive amounts in claims 5 and 16 of the co-pending application overlap with the range in the present claim 5. Claim 11 of the reference application reads on claim 8 of the instant application where Chemical Formula 3 corresponds to the claimed Formula 2. Claims 12, 14, 15, and 17 of the conflicting application contain the same subject matters as claims 9, 10, 11, and 6 of the present invention, respectively. This is a provisional nonstatutory double patenting rejection because the patentably indistinct claims have not in fact been patented. Allowable Subject Matter Claims 1-3 and 12-17 are allowed. Applicant has amended the limitation of M+ in claim 1 and, as a result, overcome the previous rejection over Guo. An updated search did not yield a new reference. Claim 1 and its dependent claims are, thus, allowable. Response to Arguments/Remarks The previous rejection of claim 1 over Guo has been withdrawn in light of Applicant’s amendment. When the above ODP is overcome, claim 4 and its dependent claims would also be in condition for allowance. Conclusion Any inquiry concerning this communication or earlier communications from the examiner should be directed to HENG M CHAN whose telephone number is (571)270-5859. The examiner can normally be reached 9 am - 5:30 pm on Monday, 9 am - 3 pm on Tuesday, and 9 am to 1 pm on Wednesday and Thursday. 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, Basia Ridley can be reached at 571-272-1453. 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. /Heng M. Chan/Examiner, Art Unit 1725 /BASIA A RIDLEY/Supervisory Patent Examiner, Art Unit 1725
Read full office action

Prosecution Timeline

Oct 03, 2023
Application Filed
Apr 08, 2026
Non-Final Rejection mailed — §DP
Jun 26, 2026
Response Filed
Jul 16, 2026
Non-Final Rejection mailed — §DP (current)

Precedent Cases

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Study what changed to get past this examiner. Based on 5 most recent grants.

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Prosecution Projections

2-3
Expected OA Rounds
61%
Grant Probability
93%
With Interview (+31.9%)
3y 5m (~5m remaining)
Median Time to Grant
Moderate
PTA Risk
Based on 408 resolved cases by this examiner. Grant probability derived from career allowance rate.

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