Prosecution Insights
Last updated: October 04, 2026
Application No. 18/536,688

ELECTRODE MATERIALS FOR ENERGY STORAGE DEVICES AND METHODS FOR MANUFACTURING SUCH DEVICES

Non-Final OA §102§103§112
Filed
Dec 12, 2023
Examiner
GONZALEZ RAMOS, MAYLA
Art Unit
Tech Center
Assignee
Microvast Inc.
OA Round
1 (Non-Final)
55%
Grant Probability
Moderate
1-2
OA Rounds
2m
Est. Remaining
68%
With Interview

Examiner Intelligence

Grants 55% of resolved cases
55%
Career Allowance Rate
363 granted / 664 resolved
-5.3% vs TC avg
Moderate +14% lift
Without
With
+13.8%
Interview Lift
resolved cases with interview
Typical timeline
2y 12m
Avg Prosecution
46 currently pending
Career history
707
Total Applications
across all art units

Statute-Specific Performance

§101
1.7%
-38.3% vs TC avg
§103
55.8%
+15.8% vs TC avg
§102
14.6%
-25.4% vs TC avg
§112
21.0%
-19.0% vs TC avg
Black line = Tech Center average estimate • Based on career data from 664 resolved cases

Office Action

§102 §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 . Status of Claims Claim(s) 1-20 are currently pending. Claim(s) 14-20 have been withdrawn. Election/Restrictions Applicant’s election without traverse of Group I (claims 1-13) in the reply filed on 07/16/2026 is acknowledged. Claims 14-20 are withdrawn from further consideration pursuant to 37 CFR 1.142(b) as being drawn to a nonelected method of forming an energy storage device), there being no allowable generic or linking claim. Election was made without traverse in the reply filed on 07/16/2026. Claim Objections Claims 2-13 are objected to because of the following informalities: It is suggested that a comma be added to claims 2-13 as set forth below. 2. The energy storage device of claim 1, wherein the solid state electrolyte material comprises oxides, chalcogenides, polymers, polyanion materials, ionic salts, silicates, zeolites, molecular organic frameworks, and/or covalent organic frameworks. 3. The energy storage device of claim 1, wherein the solid state electrolyte material is an oxide with ABO3 perovskite structure. 4. The energy storage device of claim 3, wherein B-site cations of the ABO3 perovskite oxide have multiple charging states comprising a 3+ charge and a 4+ charge. 5. The energy storage device of claim 3, wherein the ABO3 perovskite oxide comprises a four component oxide structure including a first B-site cation and a second B-site cation, and wherein: a A-site cation of the ABO3 perovskite oxide can be made of materials comprising lithium and strontium, the first B-site cation can be made of materials comprising zirconium, hafnium, titanium, tin, gallium, potassium, magnesium, sodium, and the second B-site cation can be made of materials comprising niobium, tantalum, molybdenum, and tungsten. 6. The energy storage device of claim 3, wherein the ABO3 perovskite oxide has a chemical formula of Li3xLa2/3-xTiO3, and x ranges from 0.01 to 0.66. 7. The energy storage device of claim 1, wherein the solid state electrolyte material has a sodium (Na) super lonic conductor (NASICON) structure, and wherein the solid state electrolyte material is composed of NASICON-type phosphates including Li1+xAlxTi2-x(PO4)3, x ranging from 0.3 to 0.5. 8. The energy storage device of claim 1, wherein the solid state electrolyte material has an ionic conductivity higher than 10-8 s/cm at 50˚C and an electrical conductivity higher than 10-8 s/cm at room temperature. 9. The energy storage device of claim 1, wherein the energy storage device comprises solid state batteries, lithium-ion batteries, lithium metal batteries, or lithium sulfur batteries. 10. The energy storage device of claim 1, wherein the one or more electrodes are configured as cathode electrodes or anode electrodes in the energy storage device. 11. The energy storage device of claim 10, wherein the electrode active material configured for the anode electrodes comprises graphite, silicon, silica, alloys, metal oxides, lithium titanate, and/or lithium metal materials, and wherein the electrode active material configured for the cathode electrodes comprises lithium nickel manganese cobalt oxide, lithium nickel cobalt aluminum oxide, lithium iron phosphate, lithium manganese iron phosphate, lithium manganese phosphate, nickel manganese cobalt aluminum oxide, iron-based cathode materials, lithium manganese oxide, and/or lithium nickel manganese oxide. 12. The energy storage device of claim 1, wherein each of the one or more electrodes further comprises binder materials including polyvinylidene fluoride, polyethylene oxide, polytetrafluoroethylene, perfluoro sulfonic acid, carboxymethyl cellulose, and/or styrene-butadiene rubber. 13. The energy storage device of claim 1, wherein each of the one or more electrodes further comprises conductive additive materials including graphite, graphene, carbon nanotube, multi-walled carbon nanotube, and/or vapor grown carbon fiber. Appropriate correction is required. 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 11 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. Regarding claim 11 Claim 11 depends from claim 10, which recites that the one or more electrodes are configures as “cathode electrodes or anode electrodes.” Claim 11, however subsequently recites electrode active materials for both anode and cathode electrodes. It is unclear how both the anode electrodes and the cathode electrodes are present in claim 11 when claim 10 alternatively requires the one or more electrode to be cathode electrodes OR anode electrodes. Appropriate correction and/or clarification is required. Claim Rejections - 35 USC § 102 The following is a quotation of the appropriate paragraphs of 35 U.S.C. 102 that form the basis for the rejections under this section made in this Office action: A person shall be entitled to a patent unless – (a)(1) the claimed invention was patented, described in a printed publication, or in public use, on sale, or otherwise available to the public before the effective filing date of the claimed invention. Claim(s) 1-3 and 5-11 is/are rejected under 35 U.S.C. 102(a)(1) as being anticipated by US 2023/0163351 A1, Liu et al. Regarding claim 1 Liu teaches an energy storage device (corresponding to a solid-state battery 10A) [Figs. 1A-1B and paras. 0063-0066], comprising: one or more electrodes (corresponding to positive electrode layer 90B) [Fig. 1B and paras. 0065-0066], each of the one or more electrodes (90B) comprising: a solid state electrolyte material (94B) having a first average particle size less than 10µm (the solid-state electrolyte materials are polished and/or milled down to nanoparticles having size less than 900 nm) [Fig. 1B, paras. 0066 and 0110], wherein the solid state electrolyte material is ionically and electronically conductive [paras. 0066, 0074 and 0111]; and an electrode active material (92b) having a second average particle size less than 30µm (the cathode active materials 92A, 92B, 94C, 94D are generally solid powders with its particle size ranging between 10 nm and 100 µm, thereby satisfying the claimed range of less than 30 µm) [Fig. 1B and para. 0080], wherein the solid state electrolyte material and the electrode active material are mixed [Fig. 1B and para. 0066]. PNG media_image1.png 332 420 media_image1.png Greyscale Fig. 1B Regarding claim 2 Liu teaches the energy storage device as set forth above, wherein the solid state electrolyte material (94B) comprises oxides, chalcogenides, polymers, polyanion materials, ionic salts, silicates, zeolites, molecular organic frameworks, and/or covalent organic frameworks [para. 0074]. Regarding claim 3 Liu teaches the energy storage device as set forth above, wherein the solid state electrolyte material is an oxide with ABO3 perovskite structure (perovskite (ABO3)-type oxides) [para. 0074]. Regarding claim 5 Liu teaches the energy storage device as set forth above, wherein the ABO3 perovskite oxide comprises a four component oxide structure including a first B-site cation and a second B-site cation (corresponding to LixM1/3Nb1−xTixO3, where M=La, Nd) [para. 0074], and wherein: a A-site cation of the ABO3 perovskite oxide can be made of materials comprising lithium and strontium (Li in LixM1/3Nb1−xTixO3) [para. 0074], the first B-site cation can be made of materials comprising zirconium, hafnium, titanium, tin, gallium, potassium, magnesium, sodium (Ti in LixM1/3Nb1−xTixO3), and the second B-site cation can be made of materials comprising niobium, tantalum, molybdenum, and tungsten (Nb in LixM1/3Nb1−xTixO3) [para 0074]. Regarding claim 6 Liu teaches the energy storage device as set forth above, wherein the ABO3 perovskite oxide has a chemical formula of Li3xLa2/3-xTiO3, and x ranges from 0.01 to 0.66 (see para. 0074, wherein LixLayTiO3, LLTO, etc.). Regarding claim 7 Liu teaches the energy storage device as set forth above, wherein the solid state electrolyte material has a sodium (Na) super lonic conductor (NASICON) structure [paras. 0023-0024], and wherein the solid state electrolyte material is composed of NASICON-type phosphates including Li1+xAlxTi2-x(PO4)3, x ranging from 0.3 to 0.5 (lithium aluminum titanium phosphate oxide materials, Li(Al, Ti)2(PO4)3) [para. 0074]. Regarding claim 8 Liu teaches the energy storage device as set forth above. Regarding the limitation “wherein the solid-state electrolyte material has an ionic conductivity higher than 10-8 s/cm at 50˚C and an electrical conductivity higher than 10-8 s/cm at room temperature,” because the solid state electrolyte material is identical to the one claimed, the claimed properties or functions are presumed to be inherent. The court has held that products of identical chemical composition cannot have mutually exclusive properties. A chemical composition and its properties are inseparable. Therefore, if the prior art teaches the identical chemical structure, the properties applicant discloses and/or claims are necessarily present. In re Spada, 911 F.2d 705, 709, 15 USPQ2d 1655, 1658 (Fed. Cir. 1990) Examiner notes that Liu discloses the solid-sate electrolyte comprising an ionic conductivity of 10-4S/cm at 50˚C [para. 0015]. Regarding claim 9 Liu teaches the energy storage device as set forth above, wherein the energy storage device comprises solid state batteries, lithium-ion batteries, lithium metal batteries, or lithium sulfur batteries (Liu discloses a solid-state battery) [para. 0024]. Regarding claim 10 Liu teaches the energy storage device as set forth above, wherein the one or more electrodes are configured as cathode electrodes or anode electrodes in the energy storage device (one or more of the anode material layer, the solid-state electrolyte material layer, the cathode material layer, or a combination thereof, includes the composition) [Fig. 1B and para. 0066; see also paras. 0002 and 0024]. Regarding claim 11 Liu teaches the energy storage device as set forth above, wherein the electrode active material configured for the anode electrodes comprises graphite, silicon, silica, alloys, metal oxides, lithium titanate, and/or lithium metal materials [para. 0082], and wherein the electrode active material configured for the cathode electrodes comprises lithium nickel manganese cobalt oxide (LiaNibMncCodOe), lithium nickel cobalt aluminum oxide (LixNiyCozAlaOb), lithium iron phosphate (Li3Fe2(PO4)3), lithium manganese iron phosphate, lithium manganese phosphate (LiMnPO4), nickel manganese cobalt aluminum oxide, iron-based cathode materials, lithium manganese oxide, and/or lithium nickel manganese oxide [para. 0081]. 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. 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. Claim(s) 4 is/are rejected under 35 U.S.C. 103 as being unpatentable over Liu, as applied to claims 1-3 and 5-11 above, and further in view of JP2019-075253A, Tokoro et al. Regarding claim 4 Liu teaches the energy storage as set forth above, wherein B-site cations of the ABO3 perovskite oxide include Ti, Al and Nb [para. 0074]. However, Liu is silent to the B-site cations having multiple charging states comprising a 3+ charge and a 4+ charge. Tokoro teaches a positive electrode active material comprising Li1+a NibMncCodM2eO2+α, where M2 contains titanium which is present mainly in the state of Ti3+ or Ti4+ in the positive electrode active material and wherein Ti3+ is oxidized to Ti4+ to perform charge compensation, whereby the crystal structure of the positive electrode active material is easily maintained [Pages 4-5]. Liu and Tokoro are analogous inventions in the field of electrode active materials. It would have been obvious to one of ordinary skill in the art before the effective filing date of the invention to have provided B-site cations having multiple charging states comprising a 3+ charge and a 4+ charge for the purpose of performing charge compensation, whereby the crystal structure of the positive electrode active material is easily maintained, as discloses in Tokoro. Claim(s) 12 and 13 is/are rejected under 35 U.S.C. 103 as being unpatentable over Liu, as applied to claims 1-3 and 5-11 above, and further in view of US 2024/0097128 A1, TALEBIESFANDARA et al. (hereinafter “Talebiesfandara”). Regarding claim 12 Liu teaches the energy storage device as set forth in claim 1 above. Liu is silent to each of the one or more electrodes further comprises binder materials including polyvinylidene fluoride, polyethylene oxide, polytetrafluoroethylene, perfluoro sulfonic acid, carboxymethyl cellulose, and/or styrene-butadiene rubber. Talebiesfandara teaches an energy storage device comprising one or more electrodes (corresponding to cathode or anode) comprising a binder in order to improve adhesion to a current collector foil, the binder including polymeric materials such as polyvinylidenefluoride (“PVDF”) and styrene-butadiene or styrene-butadiene rubber (“SBR”) [Abstract and para. 0100]. Liu and Talebiesfandara are analogous inventions in the field of electrodes for energy storage devices. It would have been obvious to one of ordinary skill in the art before the effective filing date of the invention to have modified each of the one or more electrodes in Liu to comprise a binder including PVDF or SBR, as disclosed in Talebiesfandara, for the purpose of improving adhesion of each of the one or more electrodes to a current collector. Regarding claim 13 Liu teaches the energy storage device as set forth in claim 1 above. Liu is silent to each of the one or more electrodes further comprising conductive additive materials including graphite, graphene, carbon nanotube, multi-walled carbon nanotube, and/or vapor grown carbon fiber. Talebiesfandara teaches an energy storage device comprising one or more electrodes (corresponding to cathode or anode) comprising conductive additive materials such as graphite, graphene, carbon nanotubes carbon nanofiber, and multi-walled carbon nanotubes [Abstract and paras. 0100-0101]. Liu and Talebiesfandara are analogous inventions in the field of electrodes for energy storage devices. It would have been obvious to one of ordinary skill in the art before the effective filing date of the invention to have modified each of the one or more electrodes in Liu to comprise a conductive additive comprising graphite, graphene, carbon nanotube, multi-walled carbon nanotube, and/or vapor grown carbon fiber, as disclosed in Talebiesfandara, for the purpose of improving the electrical conductivity through the electrode [paras. 0100-0101]. Conclusion The prior art made of record and not relied upon is considered pertinent to applicant's disclosure. US 2022/0166031 A1, Li et al. teaches an energy storage device (corresponding to battery 20) [Fig. 1 and para. 0051], comprising: one or more electrodes (corresponding to negative electrode 22 and/or positive electrode 24) [Fig. 1 and para. 0051], each of the one or more electrodes (22 and/or 24) comprising: a solid-state electrolyte material (90) having a first average particle size less than 10µm (solid state electrolyte particles have an average diameter greater than or equal to about 100 nm to less than or equal to about 100 μm) [Fig. 1, paras. 0054 and 0072]; and an electrode active material (e.g., active material particles 50 of the negative electrode active material 22) [Fig. 1 and para. 0054], wherein the solid state electrolyte material (90) and the electrode active material (50) are mixed [Fig. 1 and para. 0054]. Any inquiry concerning this communication or earlier communications from the examiner should be directed to MAYLA GONZALEZ RAMOS whose telephone number is (571)272-5054. The examiner can normally be reached Monday - Thursday, 9:00-5:00 - EST. 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. 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. /MAYLA GONZALEZ RAMOS/Primary Examiner, Art Unit 1721
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Prosecution Timeline

Dec 12, 2023
Application Filed
Aug 26, 2026
Non-Final Rejection mailed — §102, §103, §112 (current)

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Prosecution Projections

1-2
Expected OA Rounds
55%
Grant Probability
68%
With Interview (+13.8%)
2y 12m (~2m remaining)
Median Time to Grant
Low
PTA Risk
Based on 664 resolved cases by this examiner. Grant probability derived from career allowance rate.

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