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NOVALIS THERAPEUTICS / SOLID-STATE ENERGY LABS — PATENT PRIOR ART AUDIT PACK
CONFIDENTIAL ATTORNEY WORK-PRODUCT & UNFILED PATENT DRAFT CLAIMS
SYNTHETIC DEMONSTRATION RECORD FOR LOCAL PRIOR ART RETRIEVAL
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RECORD 1: UNFILED PROVISIONAL PATENT SPECIFICATION & DRAFT CLAIMS (EXCERPT)
Docket No.: NVEL-2026-PROV-01
Client: Novalis Solid-State Energy Labs Inc.
Title: Scandium-Tantalum Co-Doped Garnet-Type Solid Electrolyte and Lithium Battery Comprising Same
Inventors: Dr. Elena Rostova, Marcus Chen
Status: Confidential Non-Public Invention Disclosure — DO NOT TRANSMIT VIA PUBLIC NETWORKS
Filing Target: USPTO Provisional (Planned: 2026-10-15)

1. TECHNICAL FIELD & ABSTRACT
The present disclosure relates to a lithium-stuffed garnet-type solid electrolyte having a cubic crystal structure, characterized by dual cation substitution of zirconium sites using both scandium (Sc) and tantalum (Ta), exhibiting bulk ionic conductivity exceeding 1.85 mS/cm at 25°C and critical current density (CCD) exceeding 3.5 mA/cm² without dendritic short-circuiting.

2. DETAILED DESCRIPTION OF PREFERRED EMBODIMENT
The solid electrolyte composition is represented by the formula:
    Li_(7+x-y) La_3 Zr_(2-x-y) Sc_x Ta_y O_12
wherein 0.08 <= x <= 0.22, and 0.15 <= y <= 0.35.
The co-doping of Sc^3+ and Ta^5+ into the Zr^4+ octahedral sites stabilizes the high-conductivity cubic phase down to -40°C while suppressing the low-conductivity tetragonal phase. Sintering is conducted at 1,075°C to 1,120°C in an oxygen-rich atmosphere for 4 hours, utilizing lithium borate as a transient liquid-phase sintering aid at 1.2 wt%. The resulting ceramic pellet achieves relative density of 97.8% of theoretical crystal density with an average grain size between 3.2 and 5.4 micrometers.

3. DRAFT CLAIMS FOR NOVELTY AND NON-OBVIOUSNESS EVALUATION
Claim 1 (Independent):
A solid electrolyte material comprising:
  a cubic garnet-type crystalline oxide represented by the general formula Li_(7+x-y) La_3 Zr_(2-x-y) Sc_x Ta_y O_12,
  wherein 0.08 <= x <= 0.22 and 0.15 <= y <= 0.35;
  wherein the solid electrolyte exhibits a total ionic conductivity at 25°C of at least 1.70 x 10^-3 S/cm (1.70 mS/cm);
  and wherein the relative sintered density is at least 96.5% with an average grain boundary impedance below 18 Ohm*cm².

Claim 2 (Dependent):
The solid electrolyte material of claim 1, wherein the average grain size of the ceramic oxide is between 3.0 and 6.0 micrometers, and the critical current density at 25°C exceeds 3.0 mA/cm².


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RECORD 2: PRIOR ART REFERENCE A — FICTIONAL REFERENCE A (EXCERPT)
Grant Date: 2020-11-24
Assignee: Kyoto Advanced Materials Corp.
Title: Tantalum-Doped Garnet Lithium Ion Conductor
Classification: H01M 10/0562, C04B 35/48

1. BACKGROUND AND DISCLOSURE
Discloses cubic garnet solid electrolytes formulated as Li_(7-y) La_3 Zr_(2-y) Ta_y O_12, where tantalum single-doping ranges from y = 0.20 to 0.60.
The document discloses that substituting Ta^5+ for Zr^4+ stabilizes cubic symmetry at room temperature.
Reported results: Bulk ionic conductivity at 25°C achieves a maximum of 1.02 mS/cm at y = 0.40. Sintering requires 1,220°C for 12 hours with Al2O3 contamination from crucible diffusion (0.8 wt% Al). Relative density reached 92.4%.
Critique/Difference: Does not disclose or suggest co-doping with trivalent scandium (Sc^3+). Explicitly teaches away from multi-element sub-lattice doping, stating that foreign trivalent ions induce secondary insulating LaScO3 phases that degrade conductivity.


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RECORD 3: PRIOR ART REFERENCE B — FICTIONAL REFERENCE B (EXCERPT)
Grant Date: 2022-04-18
Assignee: Fraunhofer Gesellschaft zur Förderung der angewandten Forschung e.V.
Title: Doped Garnet Ceramic Electrolyte and Low-Temperature Processing
Classification: H01M 10/0525, H01B 1/08

1. CLAIMS AND TEACHINGS
Discloses garnet electrolytes of formula Li_7 La_3 Zr_2 O_12 doped with trivalent elements selected from Ga, Al, Sc, and In.
In Example 4, single-doping of scandium at Sc = 0.15 yields Li_7.15 La_3 Zr_1.85 Sc_0.15 O_12.
Reported results: Sintered at 1,150°C. Total ionic conductivity at 25°C is reported as 0.68 mS/cm. The grain boundary resistance dominates total impedance (R_gb = 142 Ohm*cm²).
Critique/Difference: Lacks pentavalent co-doping (no Ta or Nb). Fails to reach ionic conductivity above 1.0 mS/cm. Does not teach liquid-phase lithium borate sintering aids or grain boundary impedance suppression below 20 Ohm*cm².


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RECORD 4: INVENTOR INTERVIEW & PATENT COUNSEL LEGAL MEMORANDUM
Document ID: NVEL-MEMO-2026-PAT-03
Author: Jonathan Hayes, Registered Patent Attorney (USPTO Reg. No. 64,812)
Date: 2026-08-14
Subject: 35 U.S.C. § 102 / § 103 Novelty & Obviousness Clearance Opinion

1. STATUTORY 102 NOVELTY CLEARANCE
1.1 Reference A (FICTIONAL REFERENCE A) anticipates neither Claim 1 nor Claim 2: It teaches single-element Ta doping only (y = 0.2 to 0.6) and expressly lacks scandium (x = 0).
1.2 Reference B (FICTIONAL REFERENCE B) does not anticipate: It teaches single-element Sc doping only, with an ionic conductivity ceiling of 0.68 mS/cm, failing the 1.70 mS/cm threshold.
1.3 Conclusion: Independent Claim 1 is strictly novel under 35 U.S.C. § 102.

2. STATUTORY 103 OBVIOUSNESS ANALYSIS & UNEXPECTED RESULTS
2.1 A prima facie obviousness rejection combining Ref A and Ref B is overcome by:
  a. Reference A's express teaching away regarding trivalent cation additions causing detrimental LaScO3 secondary phases.
  b. Synergy / Unexpected Results: Synergistic co-doping of Sc (trivalent) and Ta (pentavalent) achieves 1.85 mS/cm, which is 81% higher than Ref A (1.02 mS/cm) and 172% higher than Ref B (0.68 mS/cm).
2.2 Confidentiality Warning: The draft provisional claims and experimental synthesis conditions have not been publicly disclosed. Any upload to public or commercial AI services risks creating an effective public disclosure bar under 35 U.S.C. § 102(a)(1) or triggering absolute novelty loss under European Patent Convention (EPC) Article 54.