Prosecution Insights
Last updated: May 29, 2026
Application No. 18/350,893

FLEXIBLE SULFIDE SOLID ELECTROLYTE AND ALL SOLID-STATE BATTERIES COMPRISING THE SAME

Non-Final OA §103§112
Filed
Jul 12, 2023
Priority
Jul 20, 2022 — provisional 63/390,699
Examiner
LEE, DANIEL H.
Art Unit
1746
Tech Center
1700 — Chemical & Materials Engineering
Assignee
Factorial Inc.
OA Round
1 (Non-Final)
70%
Grant Probability
Favorable
1-2
OA Rounds
0m
Est. Remaining
96%
With Interview

Examiner Intelligence

Grants 70% — above average
70%
Career Allowance Rate
384 granted / 545 resolved
+5.5% vs TC avg
Strong +26% interview lift
Without
With
+25.6%
Interview Lift
resolved cases with interview
Typical timeline
2y 7m
Avg Prosecution
21 currently pending
Career history
564
Total Applications
across all art units

Statute-Specific Performance

§101
0.1%
-39.9% vs TC avg
§103
84.2%
+44.2% vs TC avg
§102
2.2%
-37.8% vs TC avg
§112
11.3%
-28.7% vs TC avg
Black line = Tech Center average estimate • Based on career data from 545 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 . Election/Restrictions Applicant's election with traverse of Group I, claims 1-14 in the reply filed on April 16, 2026 is acknowledged. The traversal is on the ground(s) that there is no undue burden. This is not found persuasive because the method search would be in a different classification. The requirement is still deemed proper and is therefore made FINAL. 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 2-4 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. In claim 2, the limitation “has a value no higher than a threshold value determined by an equation” is vague and considered indefinite. 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. The factual inquiries for establishing a background for determining obviousness under 35 U.S.C. 103 are summarized as follows: 1. Determining the scope and contents of the prior art. 2. Ascertaining the differences between the prior art and the claims at issue. 3. Resolving the level of ordinary skill in the pertinent art. 4. Considering objective evidence present in the application indicating obviousness or nonobviousness. This application currently names joint inventors. In considering patentability of the claims the examiner presumes that the subject matter of the various claims was commonly owned as of the effective filing date of the claimed invention(s) absent any evidence to the contrary. Applicant is advised of the obligation under 37 CFR 1.56 to point out the inventor and effective filing dates of each claim that was not commonly owned as of the effective filing date of the later invention in order for the examiner to consider the applicability of 35 U.S.C. 102(b)(2)(C) for any potential 35 U.S.C. 102(a)(2) prior art against the later invention. Claims 1-14 are rejected under 35 U.S.C. 103 as being unpatentable over Hippauf et al. (“Hippauf”, US 2022/0029242 A1). Regarding claims 1, 9 and 10, Hippauf discloses a solid electrolyte membrane for a solid state battery ([0006]), where the solid electrolyte material can be Li6PS5Cl (argyrodite) ([0046]), which reads on the formula claimed in claim 1 as well as a) of claim 9 and the limitation of claim 10. Hippauf teaches the binding agent can be fibrillated polytetrafluoroethylene in small amounts of a maximum of 1 weight percent ([0007]). Hippauf does not expressly teach the bending strain of no less than 0.1% with the claimed formula. However, Hippauf teaches a “flexible composite layer” should be understood as a composite layer that can be bent or folded and unfolded by up to 180o without breaking at room temperature, and a bending radius is preferably 90 to 100 microns ([0008]). The claimed limitation is considered to be inherent in Hippauf or at least obvious in view of the above teachings. As to claim 2, the limitation is rejected under 112 above and does not further limit claim 1. As to claims 3 and 4, acrylate and PTFE binders are well known in the art. Hippauf teaches PTFE ([0006]) as discussed above. It would have been obvious to one of ordinary skill in the art at the effective filing date of the invention to optimize the amount of binder through routine experimentation. Furthermore, both sides of the equation could be zero, meaning the binder and the Cl/Br are optional and not required in the claims. As to claims 5 and 6, Hippauf teaches conducitivity of 2.5 and 2.7 mS/cm (see Fig. 15). As to claim 7, Hippauf teaches bending radius is preferably 90 to 100 microns ([0008]), which would imply the thickness in that range. As to claim 8, Hippauf teaches non-crimp fabric ([0025]), which is a type of nonwoven fabric and acts as a scaffold layer. As to claim 11, Hippauf does not teach the exact formulae claimed in the Markush group. However, Hippauf teaches Li6PS5Cl (argyrodite) ([0046]) and teaches different substitutions and of elements, which overlap the combinations in the claimed Markush group. Therefore, the formulae claimed are considered obvious variants. As to claims 12-14, Hippauf teaches a solid state battery with a solid electrolyte membrane ([0027]) and teaches a cathode unit with a composite material of lithium nickel manganese cobalt ([0046]). Hippauf also shows voltages well above 2.0 in Figs. 5-9. Conclusion Any inquiry concerning this communication or earlier communications from the examiner should be directed to DANIEL H. LEE whose telephone number is (571)272-2548. The examiner can normally be reached M-F 8:30-5:00. 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, Michael Orlando can be reached at 5712705038. 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. DANIEL H. LEE Primary Examiner Art Unit 1746 /DANIEL H LEE/Primary Examiner, Art Unit 1746
Read full office action

Prosecution Timeline

Jul 12, 2023
Application Filed
May 19, 2026
Non-Final Rejection mailed — §103, §112 (current)

Precedent Cases

Applications granted by this same examiner with similar technology

Patent 12620599
LAYERED BODY, NEGATIVE ELECTRODE CURRENT COLLECTOR FOR LITHIUM ION SECONDARY BATTERY, AND NEGATIVE ELECTRODE FOR LITHIUM ION SECONDARY BATTERY
2y 10m to grant Granted May 05, 2026
Patent 12614821
HIGH ENERGY DENSITY CYLINDRICAL BATTERY CELL DESIGN WITH STACKED ELECTRODES
2y 10m to grant Granted Apr 28, 2026
Patent 12261143
METHOD OF MANUFACTURING SUBSTRATE LAYERED BODY AND LAYERED BODY
3y 11m to grant Granted Mar 25, 2025
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MEMBRANES COMPRISING A THERMALLY CURED ADHESIVE
2y 3m to grant Granted Mar 04, 2025
Patent 12215254
Honeycomb Core Splice Adhesive with Improved Fire Retardancy
4y 5m to grant Granted Feb 04, 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
70%
Grant Probability
96%
With Interview (+25.6%)
2y 7m (~0m remaining)
Median Time to Grant
Low
PTA Risk
Based on 545 resolved cases by this examiner. Grant probability derived from career allowance rate.

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