Solid-State Battery Fast Charging Patent Landscape 2026
The solid-state battery fast charging space is in a Growth stage, with annual filing volume still rising and a 26% recent-window increase — yet the field remains relatively small, with 129 patent families in scope and no single incumbent commanding an overwhelming share. LG Energy Solution leads the ranked applicants, but the top five filers account for only 30% of the hundred largest filers’ combined total, signalling room for challengers to establish durable positions.
LG Energy Solution leads a fragmented, still-forming competitive field
LG Energy Solution holds the top position among ranked applicants, followed closely by Terawatt Technology and IBM — each with substantial patent records — and Solid Power Operating in fourth place. The ranking reflects a genuinely contested field rather than a monopoly.
The top five filers account for 30% of the hundred largest filers’ combined total, indicating moderate concentration. No single player has locked up the space, and the gap between first place and the pack of challengers ranked third through fifth is narrow enough that the order could shift as publication lag resolves on the most recent filings.
| # | Applicant | Patent records | Share |
|---|---|---|---|
| 1 | LG Energy Solution | 14 | |
| 2 | Terawatt Technology Inc. | 10 | |
| 3 | IBM (International Business Machines Corporation) | 10 | |
| 4 | Solid Power Operating Inc. | 8 | |
| 5 | GM Global Technology Operations LLC | 6 | |
| 6 | Factorial Inc. | 5 | |
| 7 | Robert Bosch GmbH | 4 | |
| 8 | Gaoneng Times (Shenzhen) New Energy Technology Co., Ltd. | 4 | |
| 9 | Regents of the University of California | 4 | |
| 10 | Ford Global Technologies LLC | 4 |
| # | Applicant | Patent records | Share |
|---|---|---|---|
| 11 | University of Liverpool | 3 | |
| 12 | Hyundai Motor Company | 3 | |
| 13 | Toyota Motor Corporation | 3 | |
| 14 | Samsung Electro-Mechanics Co., Ltd. | 3 | |
| 15 | Honda Motor Co., Ltd. | 2 | |
| 16 | Tianmu Lake Institute of Advanced Energy Storage Technologies | 2 | |
| 17 | TDK Corporation | 2 | |
| 18 | Institute of Physics, Chinese Academy of Sciences | 2 | |
| 19 | LG Chem Ltd. | 2 | |
| 20 | Talga Technologies Ltd. | 2 |
The presence of both dedicated solid-state specialists (Terawatt Technology, Solid Power Operating, Factorial) and large industrial incumbents (LG Energy Solution, IBM, GM, Robert Bosch, Ford) suggests the technology is attracting investment across two distinct strategic logics: focused IP-building by startups and portfolio diversification by established manufacturers.
Activity in the most recent 18–24 months is likely under-counted due to the typical patent publication lag; the filing figures for 2025 and 2026 should be treated as provisional floors rather than final totals. Longer-window growth, applicant concentration, and technology-route coverage are therefore more reliable signals than the latest-year bar alone.
Annual filing volume is rising and technology coverage is heavily concentrated in battery cell fundamentals
Two patterns define the field’s current structure: a Growth-stage filing trend with a 26% recent-window increase, and a technology mix dominated almost entirely by the H01M battery-cell class, with a thin set of adjacent IPC branches reflecting early-stage cross-domain exploration.
Annual filing trend
Filings were modest and uneven from 2017 through 2020, then accelerated sharply in 2021. Activity moderated in 2022–2023 before climbing again in 2024 and provisionally in 2025. The 2025 and 2026 bars are materially understated by publication lag and will rise as pending applications publish.
↗ Hover for values · click a bar to ask EurekaTechnology composition
H01M (batteries, cells, and fuel cells) accounts for the overwhelming majority of IPC-tagged records, confirming that inventive effort is concentrated on electrochemical cell architecture and materials. B60L (electric vehicle propulsion), H10N (other solid-state devices), C03C (glass and enamel compositions for electrolytes), and G01R (electrical measurement) each appear at low counts, reflecting early or opportunistic activity rather than sustained parallel tracks.
↗ Hover for values · click a bar to ask EurekaHighly cited patent families surfaced by the query
Citation-heavy patent families returned by the query. Use this section as citation context, not as a curated list of the most topic-specific patents.
Positive electrode for all-solid-state battery and…
The present disclosure relates to a positive electrode for an all-solid-state battery, comprising: a positive electrode active material; a perfluorinated ionomer comprising lithium substituted sulfonate; a solid electrolyte; and conductive carbon, and an all-solid-state battery comprising the same. (excerpt from the patent abstract)
| # | Patent | Citations |
|---|---|---|
| 1 | Hybrid and solid-state battery architectures with … | 47 |
| 2 | Electrode body for all-solid-state battery and pro… | 22 |
| 3 | 一种复合三氟化铁正极材料、制备方法及应用 | 19 |
| 4 | Hybrid electrode materials for bipolar capacitor-a… | 18 |
| 5 | 一种高功率全固态电池及其制备 | 17 |
| 6 | Sulfide-impregnated solid-state battery | 15 |
| 7 | Anode-free solid-state battery cells with Anti-den… | 13 |
| 8 | Methods of making sulfide-impregnated solid-state … | 12 |
Ranked by total forward citations. Citation counts favour older and broadly cited patent families, and broad or adjacent patents may appear when they match the search scope. Treat this section as citation context, not as a curated list of the most topic-specific patents. Some patent titles may be shown in their original, non-English language where an accurate translation could not be guaranteed.
What the competitive structure means for R&D investment decisions
The combination of a Growth lifecycle, moderate concentration, active cross-sector collaboration, and a US-dominant jurisdiction map shapes where R&D effort is most and least contested.
Growth stage — annual volume rising, foundational IP still being established
The field is classified as Growth, with annual filings still rising and recent-window growth of 26%. The most heavily cited works address hybrid architectures, electrode design, and sulfide-electrolyte impregnation — areas where foundational claims are actively being built. Entrants who file now can still target core technology positions rather than crowded incremental niches.
Lifecycle: GrowthModerate concentration — top five hold 30% of the hundred largest filers’ total
The 30% share held by the top five applicants among the hundred largest filers indicates a moderately fragmented field. The narrow gap between leaders means no single player has erected a clearly dominant IP wall. Challengers ranked sixth through tenth — including Factorial, Robert Bosch, and the University of California — hold positions close enough to the top tier that focused filing campaigns could shift the ranking.
Concentration: ModerateLG Energy Solution is the most active co-filer, partnering with academia
The most active co-filing relationships involve LG Energy Solution (LG New Energy) paired with the Regents of the University of California (3 joint filings) and, separately, with Hanyang University (1 joint filing). These partnerships suggest a model in which large battery manufacturers are accessing novel electrolyte and materials science through university channels rather than purely internal R&D — a path worth monitoring for IP entanglement risk.
Collaboration: Industry–AcademiaUS is the dominant filing jurisdiction; China and Europe are secondary battlegrounds
The United States leads all jurisdictions by a substantial margin, followed by China and Europe (EPO). WIPO PCT filings indicate applicants pursuing multi-jurisdiction protection on their most strategically important assets. India appears as a fifth jurisdiction, reflecting either local manufacturing interest or cost-effective supplemental filing strategies. Germany’s separate national filings (beyond EPO) are minimal.
Lead Office: USGo beyond the landscape: Eureka’s TRIZ Solution agent breaks down an R&D problem and returns patented concept solutions, each with a technical approach and cited patent & literature evidence.
| Applicant | Collaborator | Co-filings |
|---|---|---|
| LG Energy Solution | Regents of the University of California | 3 |
| LG Energy Solution | 汉阳大学校产学协力团 | 1 |
Co-filing pairs, ranked by the number of jointly-filed patent families.
LG Energy Solution and Solid Power lead on volume; IBM and Terawatt Technology bring distinct technical emphases
The top ranked applicants divide broadly into two groups: battery-specialist incumbents building cell-architecture IP, and cross-sector players (IBM, GM) whose portfolios span electrochemistry alongside adjacent device classes.
LG Energy Solution
LG Energy Solution leads with 14 patent records, concentrated entirely in H01M battery-cell and electrode subclasses. Its applicant momentum is classified as a new entrant in the fast-charging-specific corpus, meaning its recent filing activity (5 records in the recent window) is building from a newly established base in this precise technology cluster. The university co-filing partnerships with UC and Hanyang suggest active external R&D intake alongside internal development.
families: 14Solid Power Operating
Solid Power Operating holds 8 patent records and its momentum is also classified as a new entrant in this corpus, with 6 records in the recent filing window — the highest recent-window count among all momentum-tracked applicants. Its focus is tightly concentrated in H01M10 (secondary batteries) and H01M4 (electrodes), consistent with its publicly known sulfide electrolyte program. The highly cited ‘sulfide-impregnated solid-state battery’ and ‘methods of making sulfide-impregnated solid-state battery’ documents in the top-cited list likely originate from or relate to this organization’s technology area.
families: 8| Applicant | Recent (3 yrs) | Trend |
|---|---|---|
| LG Energy Solution | 5 | ▲ new entrant |
| Solid Power Operating Inc. | 6 | ▲ new entrant |
| Factorial Inc. | 2 | ▲ new entrant |
| Gaoneng Times (Shenzhen) New Energy Technology Co., Ltd. | 4 | ▲ new entrant |
| Ford Global Technologies LLC | 3 | ▲ new entrant |
| Regents of the University of California | 2 | ▲ new entrant |
Under-served IPC branches adjacent to the dominant battery-cell cluster
Five IPC classes sit at the periphery of the current filing activity with low record counts and share, each representing a distinct technical angle on solid-state fast charging that remains largely unclaimed.
G01R · Electrical and magnetic measurement
Only 3 records appear under G01R, covering measurement techniques applicable to solid-state cell characterization and state-of-charge sensing during fast charge. Accurate in-situ diagnostics are a known bottleneck for safe fast charging of solid-state cells — thermal runaway and lithium-plating detection are unresolved engineering problems. An applicant with sensor or instrumentation expertise could stake early claims here before the dominant H01M filers expand their scope.
Search this in Eureka →H02J · Power supply and grid systems
With only 3 records, H02J — covering charging infrastructure, power conversion, and grid interface — is sparsely populated relative to the cell-chemistry focus of the field. Fast charging of solid-state batteries requires purpose-built power delivery profiles (high-current pulse protocols, thermal management coordination) that differ from lithium-ion charging systems. This branch is under-served and has a plausible entry path for power-electronics or charging-infrastructure specialists who can tie grid-side innovations to solid-state cell requirements.
Search this in Eureka →How leading applicants differ by IPC technology route
Route coverage across the main technology branches in the current evidence set.
| Player | H01M 10 · Batteries, cells & fuel cells | H01M 4 · Batteries, cells & fuel cells | H01M 50 · Batteries, cells & fuel cells | H01M 2 · Batteries, cells & fuel cells | H01M 6 · Batteries, cells & fuel cells |
|---|---|---|---|---|---|
| IBM (International Business Machines Corporation) | Strong · 10 | Strong · 10 | Strong · 10 | Strong · 10 | Moderate · 5 |
| LG Energy Solution | Strong · 14 | Strong · 11 | Moderate · 3 | Absent | Absent |
| Terawatt Technology Inc. | Strong · 10 | Strong · 6 | Strong · 6 | Emerging · 2 | Absent |
| Robert Bosch GmbH | Strong · 4 | Strong · 4 | Strong · 4 | Absent | Absent |
| Regents of the University of California | Strong · 4 | Strong · 4 | Absent | Absent | Absent |
| Factorial Inc. | Strong · 4 | Strong · 4 | Absent | Absent | Absent |
| Gaoneng Times (Shenzhen) New Energy Technology Co., Ltd. | Strong · 4 | Strong · 4 | Absent | Absent | Absent |
Frequently asked questions
The current evidence set contains 129 patent families in scope for this technology topic, spanning filing years 2017 through 2026.
LG Energy Solution leads the ranked applicants with 14 patent records, followed by Terawatt Technology and IBM each with 10 patent records, and Solid Power Operating with 8.
The field is in a Growth stage. Recent-window filings are up 26% versus the prior comparable period, and annual volume has trended upward since 2021. The 2025 and 2026 figures are understated by publication lag and will increase as pending applications publish.
The United States is the leading filing jurisdiction, followed by China, Europe (EPO), and WIPO PCT. India and Germany also appear in the jurisdiction map. Applicants filing PCT applications are signalling intent to protect their most commercially important assets across multiple markets simultaneously.
The most under-served adjacent IPC branches are G01R (electrical measurement and diagnostics), H02J (power supply and grid systems), and C03C (glass and enamel compositions used in solid electrolytes), each with only 3 records in the corpus. B60L (EV propulsion integration) and H10N (other solid-state devices) also have low coverage relative to the dominant H01M class.
Yes. LG Energy Solution is the most active co-filer, with 3 joint filings alongside the Regents of the University of California and 1 joint filing with Hanyang University. These are the only co-applicant relationships identified in the current evidence set, suggesting that cross-sector collaboration is nascent but real.
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Patent data carries inherent limitations: recent filings (typically the most recent 18–24 months) are under-counted due to standard publication lag; counts may be reported at either a patent-family or a patent-record basis and are not always directly comparable; classification, applicant-name, and citation data may contain errors, duplicates, or omissions; and the underlying search query defines and constrains the scope shown. As a result, the analysis may be incomplete or inaccurate and may not reflect the full technology landscape.
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