Semi-Solid Battery Electrolyte Patent Landscape 2026
Semi-Solid Battery Electrolyte Patent Landscape in 2026
The semi-solid battery electrolyte patent corpus is extremely nascent, with only 2 patent families on record and a single active applicant, EVE Energy Co., Ltd., holding all filings. Activity emerged only in 2024–2025, signaling that this sub-field is at the earliest stage of formal IP formation.
EVE Energy holds the entire known corpus — extreme concentration in an embryonic field
EVE Energy Co., Ltd. accounts for all 2 patent families currently on record for semi-solid battery electrolyte technology, making this one of the most concentrated IP positions observable in any emerging energy materials sub-field.
With a single filer representing 100% of the top hundred ranked applicants’ combined total, there is no discernible tier structure: no challenger, no fast-follower cluster, and no institutional or academic co-filers identified in the evidence.
| # | Applicant | Patent families | Share |
|---|---|---|---|
| 1 | EVE Energy Co., Ltd. | 2 |
EVE Energy’s early and exclusive positioning could constitute a foundational IP stake if the technology scales, but the corpus is too small to draw durable competitive conclusions; the absence of other large battery manufacturers or polymer chemistry specialists is the most strategically notable observation.
The two most recent filing years (2024–2025) are subject to publication lag and likely undercount true activity; the full scope of filings in this window should be treated as provisional. Longer-window growth, applicant concentration, and technology-route coverage are therefore more reliable signals than the latest-year bar alone.
Activity is confined to 2024–2025; polymer and cell chemistry are the twin technical anchors
The annual filing trend and technology composition charts together reveal a field that effectively did not exist in patent terms before 2024 and is currently defined by two overlapping IPC branches.
Annual filing trend
Zero filings were recorded from 2017 through 2023; one family appeared in each of 2024 and 2025, with 2026 showing zero — almost certainly a publication-lag artifact rather than a cessation of activity. The pattern confirms that semi-solid battery electrolyte IP formation is in its very first innings.
↗ Hover for values · click a bar to ask EurekaTechnology composition
Both patent families are classified under C08F (addition polymers, including vinyl chemistries) and H01M (batteries, cells, and fuel cells), indicating that current work couples polymer electrolyte formulation directly with cell-level innovation — a tightly integrated technical focus with no fragmentation across adjacent branches yet visible.
↗ 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.
HALBFESTER BATTERIEELEKTROLYTVORLÄUFER, HALBFESTER…
A semi-solid battery electrolyte precursor, a semi-solid battery electrolyte, a semi-solid battery, and a preparation method of the semi-solid battery are provided. The semi-solid battery electrolyte precursor includes a first polymer monomer, a second polymer monomer, and an initiator. The first polymer monomer is an acrylic acid monomer or an acrylate… (excerpt from the patent abstract)
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 IP structure means for R&D investment decisions
Despite the tiny corpus size, the structural signals — sole filer, dual jurisdiction, paired polymer/cell IPC codes — offer directional guidance for teams evaluating entry or monitoring strategy.
Pre-formation stage: IP activity began only in 2024
The lifecycle stage cannot be formally assigned from the available evidence, but the filing timeline is unambiguous: no patent families predate 2024. This places semi-solid battery electrolyte IP at the very beginning of the formation curve, where freedom-to-operate is likely broad and foundational claim territory remains largely open. Teams entering now face minimal prior-art density but also limited technical benchmarks from the patent record.
Nascent fieldSingle-filer dominance with no visible challenger
EVE Energy Co., Ltd. holds all 2 patent families, giving it 100% of the top hundred ranked applicants’ combined total — a figure that reflects total corpus dominance rather than share of a large pool. No second-tier filers, no academic institutions, and no research consortia appear in the applicant ranking. For a competitor, this means monitoring EVE Energy’s claim scope is the primary FTO task; for a new entrant, the absence of overlapping filers signals relatively open design space.
Maximum concentrationNo co-applicant activity identified in evidence
The collaboration evidence shows no co-filed or jointly assigned patent families in this corpus. This is consistent with the field’s embryonic stage — technology partnerships in battery electrolyte sub-fields often emerge only once baseline IP is established. Teams seeking to accelerate via joint development agreements or licensing will find no existing co-filing ecosystem to benchmark against; early coalition formation could become a differentiator.
No ecosystem yetChina and Europe (EPO) are the two jurisdictions covered
The 2 patent families have been filed in China and via the European Patent Office, covering two of the world’s largest battery manufacturing and automotive markets. Notably absent from the current record are the United States and Japan — two jurisdictions critical for both cell manufacturers and automotive OEMs. Whether this reflects a deliberate filing strategy or publication lag is unclear; monitoring PCT and national-phase entries from EVE Energy over the next 12–18 months is advisable.
CN + EPO onlyGo 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.
Co-filing pairs, ranked by the number of jointly-filed patent families.
EVE Energy: sole filer with a new-entrant trajectory in polymer-cell integration
With only one ranked applicant in the corpus, the competitive field is defined entirely by EVE Energy Co., Ltd.’s nascent IP activity; no challenger has yet established a formal patent position.
EVE Energy Co., Ltd.
EVE Energy holds all 2 patent families in scope, with technical focus spanning C08F 222 and C08F 220 (addition polymer chemistries) and H01M 10 (battery and cell systems). The applicant’s momentum is classified as a new entrant — the most recent period shows 1 filing against a prior baseline of zero, indicating the company initiated this IP program in 2024. As the sole active filer, EVE Energy sets the only existing prior-art baseline in this sub-field.
families: 2No challenger identified
No second-ranked applicant appears in the current evidence. The challenger position is vacant, representing an open competitive slot for any battery manufacturer, polymer materials company, or research institution that files in this space. The absence of challengers should be treated as a snapshot of a very early corpus rather than a durable market structure.
families: —| Applicant | Recent (3 yrs) | Trend |
|---|---|---|
| EVE Energy Co., Ltd. | 1 | ▲ new entrant |
Under-served technical branches adjacent to the current IPC focus
The current corpus is confined to C08F addition polymers and H01M cell systems; several technically adjacent IPC branches show no filings and may represent areas where early work could face less prior-art pressure.
H01M 10/0565 — Ionic-liquid and gel-polymer electrolyte formulations
Ionic-liquid-based and gel-polymer hybrid electrolytes are a natural mechanistic neighbor to semi-solid electrolyte systems and share processing chemistry with the C08F work already filed. This branch is absent from the current corpus, which is consistent with the field’s infancy rather than a deliberate exclusion. An R&D team with capabilities in ionic liquid synthesis or crosslinked polymer networks could file foundational claims here with limited prior-art overlap from existing semi-solid battery electrolyte filings.
Search this in Eureka →C08G — Condensation polymers as electrolyte matrices
The existing filings rely on addition (vinyl-type) polymerization routes under C08F; condensation polymer architectures (polyesters, polyethers, polyurethanes) classified under C08G offer an alternative chemical approach to semi-solid electrolyte matrices and are unrepresented in the current evidence. Condensation polymers can offer tunable mechanical properties relevant to cell-level integration, and the absence of any C08G-classified filings in this corpus makes it a sparse adjacent branch worth monitoring for future white-space entry.
Search this in Eureka →How leaders differ by technology route
Strength of each leader across the main technology routes.
| Player | C08F 222 · Addition polymers (vinyl etc.) | H01M 10 · Batteries, cells & fuel cells | C08F 220 · Addition polymers (vinyl etc.) | H01M 4 · Batteries, cells & fuel cells |
|---|---|---|---|---|
| EVE Energy Co., Ltd. | Strong · 2 | Strong · 2 | Moderate · 1 | Moderate · 1 |
Frequently asked questions
The current evidence covers 2 patent families in scope. This is an extremely small corpus, reflecting the technology’s very recent entry into formal IP protection, with the first filings appearing in 2024.
EVE Energy Co., Ltd. is the sole ranked applicant, holding all 2 patent families. No other applicant appears in the current ranking.
The current patent families have been filed in China and via the European Patent Office (EPO). The United States, Japan, and other major battery-market jurisdictions do not yet appear in the evidence, though publication lag may account for some of this absence.
Both patent families are classified under C08F (addition polymers, including vinyl-type chemistries) and H01M (batteries, cells, and fuel cells). This dual classification indicates that current semi-solid electrolyte work tightly couples polymer formulation with cell-system engineering.
Filings only appeared in 2024 and 2025 — one family each year — after zero activity from 2017 through 2023. The 2024–2025 window is subject to publication lag, so the true volume of recent filings may be higher than currently recorded. The field is best characterized as in its very earliest IP formation stage rather than as a growing or declining one.
No co-applicant activity or collaborative filings are identified in the current evidence. The absence of academic, consortium, or cross-industry co-filings is consistent with the pre-commercial, embryonic status of this technology area.
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Disclaimer. This page is generated from PatSnap Eureka data drawn from a limited snapshot of global patent and scientific-literature records, and is provided for general information and reference only.
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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