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Run your analysis now →https://www.patsnap.com/resources/blog/rd-blog/lithium-iron-phosphate-battery-efficiency-enhancement-patent-landscape/ · Patsnap · data cut-off 2026-07-31 · downloaded from the live page
Battery & Energy Storage · Patent LandscapeLithium Iron Phosphate Battery Efficiency Patents
- Filing has peaked, not accelerated. activity rose to 168 families in 2025 after a flat 2022 midpoint, and the partial 2026 count is on track to fall short — this looks like a plateau, not a growth curve.
- China dominates the filing base. 650 of the tracked filings route through the Chinese receiving office versus 116 in the US and 85 at the EPO, concentrating both prior art and competitive risk in one jurisdiction.
- Momentum is cooling even among the leaders. every assignee in the recent-momentum data shows a year-on-year decline, from -40% to -100%, suggesting the most active filers are consolidating positions rather than expanding them.
999
Published Records
63%
Top-5 Share of Top-100 Filers
+155%
3-Yr Growth (lag-adjusted)
CN
Leading Jurisdiction
Published byPatsnap Research··7 min readSourced from Patsnap Eureka
Overview
What this landscape covers
This dataset tracks 999 patent families filed against lithium iron phosphate (LFP) chemistry claims tied to energy density improvement, fast charging, rate capability and coulombic efficiency, spanning IPC classes for cathode active material composition and electrode processing. Coverage runs from 2015 through the 2026-07-31 cut-off, though the most recent year is always undercounted because publication lags filing by roughly 18 months.
The core classification, H01M, appears in every record by construction of the search; the more informative signal is the secondary IPC composition — how much of the corpus also touches inorganic compound chemistry (C01B), nanotechnology (B82Y), or other-metal compounds (C01G) — which shows where efficiency claims are actually being built.
Filing activity and technology composition, 2015–2026
Source: Patsnap Eureka. Assignee ranking and totals. Derived from a Patsnap search on Lithium Iron Phosphate Battery Efficiency Enhancement covering 2015–2026, data cut-off 2026-07-31. Counts reflect published records only and shift as new filings publish.Run this in Eureka MCP
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The numbers
Filing trend and technology mix
Two views of the same corpus: how filing volume has moved year over year, and which IPC subclasses carry the efficiency claims beyond the core battery classification.
Filing trend, 2017–2026
Filings climbed from 35 in 2017 to a peak of 168 in 2025, with a flat midpoint of 108 in 2022. The partial 2026 figure of 26 is not yet comparable to full years, but the trajectory into 2025 already shows deceleration rather than acceleration relative to the growth implied by the midpoint.
IPC subclass composition
H01M anchors every record, but C01B (399 records) shows that a large share of efficiency claims are built on inorganic compound chemistry — likely phosphate and coating formulations — rather than pure electrode engineering. B82Y's 76 records mark a smaller but consistent nanotechnology thread, mostly nanoscale coating and particle morphology work.
Source: Patsnap Eureka. Filing trend and technology composition. Derived from a Patsnap search on Lithium Iron Phosphate Battery Efficiency Enhancement covering 2015–2026, data cut-off 2026-07-31. Counts reflect published records only and shift as new filings publish.
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Try EurekaPrior art
Most-cited records and a representative filing
Representative filing
US12021206B2 — Method for recycling waste lithium iron phosphate by selective oxidation-reduction
LBM NEW ENERGY (AP) PTE. LTD.
A method for recycling waste lithium iron phosphate is by selective oxidation-reduction, to obtain recycled lithium iron phosphate, and a lithium ion battery. The method includes: primarily sintering waste lithium iron phosphate under a condition where a mild oxidizing gas is introduced; separating a lithium iron phosphate powder material; supplementing lithium and supplementing carbon to the lithium iron phosphate powder material and regulating the composition of the lithium iron phosphate powder material using a lithium source and a carbon source by secondary sintering to obtain recycled lithium iron phosphate, wherein the mild oxidizing gas is water vapor, CO2 gas, or a mixed gas thereof.Filed by LBM NEW ENERGY (AP) PTE. LTD., granted 2024-06-25 — a recycling-route claim rather than a virgin-synthesis claim, reflecting the corpus's shift toward end-of-life material recovery.
Highest-cited documents in this corpus
| # | Publication no. | Patent title | Citations |
|---|---|---|---|
| 1 | US20100163790A1 | Oxide coatings on lithium oxide particles | 51 |
| 2 | US20150102267A1 | METHOD FOR PREPARING GRAPHENE-BASED LiFePO4/C COMPOSITE MATERIAL | 47 |
| 3 | WO2008091707A2 | Oxide coatings on lithium oxide particles | 45 |
| 4 | CN116230923A | 一种碳包覆磷酸焦磷酸铁纳正极材料及其制备方法和应用 | 44 |
| 5 | CN113582153A | 一种修复再生的废旧磷酸铁锂正极材料及其修复再生方法 | 44 |
| 6 | CN101262078A | 可快速充电的锂离子电池及其制备方法 | 44 |
| 7 | CN106252635A | 一种石墨烯包覆的磷酸铁锂正极材料及制备方法 | 42 |
| 8 | WO2008118478A1 | Hearing aid with secondary battery and electrical contacts to charge battery | 40 |
| 9 | CN107093732A | 一种用于锂电池正极材料的磷酸铁锂/碳纳米管纳米复合材料及其制备方法 | 38 |
| 10 | CN105633369A | 一种碳包覆磷酸铁锂材料的制备方法 | 37 |
Citation counts accumulate over time inside a searched corpus, so older records such as the 2010 and 2008 oxide-coating filings lead by citation count — treat this as a measure of influence on later filers, not of current commercial relevance.
Patent titles are shown in the language they were filed in, not translated, so that each record stays verifiable against the original filing — a translated title will not match in Eureka or in any national register. Each row carries its publication number; clicking a row searches Eureka by that number.
Source: Patsnap Eureka. Citation counts and representative records. Derived from a Patsnap search on Lithium Iron Phosphate Battery Efficiency Enhancement covering 2015–2026, data cut-off 2026-07-31. Counts reflect published records only and shift as new filings publish.Run this in Eureka MCP
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What the filing pattern signals
Read together, the trend, geography and citation data point to a maturing claim space with a specific, narrow area of active competition around recycling and coating chemistry.
Trend
168 in 2025
peak filing year
Growth has plateaued, not accelerated
Filings roughly tripled from 35 in 2017 to 108 by the 2022 midpoint, then continued to a 2025 peak of 168 — but the rate of increase has slowed. A partial 2026 of 26 filings is consistent with a corpus that has stopped expanding.
Filing trend, 2017–2026
Geography
650 CN filings
of 999 records
Filing risk concentrates in China
Two-thirds of the tracked filings route through the Chinese receiving office, well ahead of the US (116) and EPO (85). Freedom-to-operate work for manufacturing or sourcing tied to China needs to prioritise this corpus first.
Receiving office distribution
Chemistry
399 C01B records
of 999 records
Coating and inorganic-compound claims dominate secondary IPC
C01B's presence in 399 of 999 records indicates that efficiency gains are frequently claimed through inorganic coating or compound chemistry rather than purely through cell architecture or electrode design.
IPC composition
Collaboration
25 co-filings
strongest pair
Recycling affiliates file together, not with outside partners
The strongest co-assignee link, at 25 shared filings, sits between two affiliated recycling entities under the same corporate family. Only five co-assignee pairs exist in total, meaning most filers in this space are prosecuting alone.
Co-assignee pairs
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Eureka can read the same corpus for gaps instead of for coverage: under-claimed branches adjacent to lithium iron phosphate battery efficiency enhancement, with the prior art for and against each one.
Collaboration pattern
| Assignee | Co-assignee | Shared families |
|---|---|---|
| GEM (Guangdong) Bangpu Circular Technology Co., Ltd. | Hunan Bangpu Circular Technology Co., Ltd. | 25 |
| GEM (Guangdong) Bangpu Circular Technology Co., Ltd. | Yichang Bangpu Circular Technology Co., Ltd. | 6 |
| Hunan Bangpu Circular Technology Co., Ltd. | Yichang Bangpu Circular Technology Co., Ltd. | 6 |
| Hubei EVE Power Co., Ltd. | Wuhan EVE Energy Storage Co., Ltd. | 1 |
| Hunan Yuneng New Energy Battery Material Co., Ltd. | Sichuan Yuning New Energy Materials Co., Ltd. | 1 |
With only five co-assignee pairs across 999 families, cross-company joint filing is rare in this corpus — most of what looks like collaboration is intra-group affiliates sharing recycling IP.
Source: Patsnap Eureka. Co-assignee relationships and derived observations. Derived from a Patsnap search on Lithium Iron Phosphate Battery Efficiency Enhancement covering 2015–2026, data cut-off 2026-07-31. Counts reflect published records only and shift as new filings publish.Run this in Eureka MCP
Competitive landscape
Who is filing, and where momentum is going
Recent-year momentum is negative across every tracked assignee, which is a different signal than the raw ranking — it points to a corpus where leaders are pulling back from new filing even as they hold existing families.
Momentum leader (by volume)
3 filings, -40% YoY
latest year
合肥国轩高科动力能源有限公司 (Gotion High-tech)
Still the most active filer by recent-year count in this tracked set, but even its filing rate fell 40% year on year, suggesting a slowdown from an already-established position rather than fresh expansion.
Recent-year momentum
Sharp decline
-90% YoY
down to 1 filing
广东邦普循环科技有限公司 (GEM Guangdong Bangpu)
Part of a recycling-focused affiliate group with the corpus's strongest co-assignee link (25 shared filings with its Hunan affiliate), but its own latest-year filing rate has nearly stopped.
Recent-year momentum
Stalled filer
0 in latest year
-100% YoY
湖南邦普循环科技有限公司 (Hunan Bangpu)
Co-files heavily with its Guangdong affiliate but shows zero filings in the latest tracked year, a full drop from prior activity — consistent with intra-group filing being consolidated into one entity.
Recent-year momentum
Established, quiet
0 in latest year
no YoY figure given
A123系统公司 (A123 Systems)
An early, well-known name in LFP chemistry with no filings in the latest tracked year in this dataset, reflecting either a shift in filing strategy or a mature, already-claimed position.
Recent-year momentum
Recent-year momentum by assignee
| Assignee | Recent year | YoY |
|---|---|---|
| Hefei Guoxuan High-Tech Power Energy Co., Ltd. (Gotion High-tech) | 3 | -40% |
| Hubei Wanrun New Energy Technology Co., Ltd. | 2 | -60% |
| SVOLT Energy Technology Co., Ltd. | 1 | -67% |
| GEM (Guangdong) Bangpu Circular Technology Co., Ltd. | 1 | -90% |
| A123 Systems | 0 | — |
| Hunan Bangpu Circular Technology Co., Ltd. | 0 | -100% |
| BYD Company Limited | 0 | -100% |
| Hubei EVE Power Co., Ltd. | 0 | -100% |
Source: Patsnap Eureka. Assignee-level momentum. Derived from a Patsnap search on Lithium Iron Phosphate Battery Efficiency Enhancement covering 2015–2026, data cut-off 2026-07-31. Counts reflect published records only and shift as new filings publish.Run this in Eureka MCP
Next steps
Where to take this analysis
The trend and ranking data answer what has happened. The next questions are what to do with it — where to file, who to watch, and what a freedom-to-operate check needs to cover.
Run a freedom-to-operate check on the China filings
With 650 of 999 records routed through the Chinese receiving office, any manufacturing or sourcing plan touching China should treat this corpus as the primary FTO universe, not a secondary check.
Explore in Eureka →Track the recycling-affiliate cluster
The strongest co-assignee link in this dataset sits inside one recycling-focused corporate family; watching how that group's filings move between affiliates is a useful proxy for where the technology is heading next.
Explore in Eureka →Stress-test the under-claimed branches
Nanoscale morphology control and alkali-metal co-doping show visibly thinner filing density than the core coating and recycling claims — worth a deeper prior-art pull before committing R&D there.
Explore in Eureka →Source: Patsnap Eureka. Forward-looking reading of the same dataset. Derived from a Patsnap search on Lithium Iron Phosphate Battery Efficiency Enhancement covering 2015–2026, data cut-off 2026-07-31. Counts reflect published records only and shift as new filings publish.Run this in Eureka MCP
FAQ
Common questions about LFP efficiency patents
Filing in this space is concentrated among a small group of Chinese battery and materials manufacturers, with recycling-focused affiliates showing particularly dense co-filing patterns. No single assignee holds a dominant share of the 999 tracked families; instead, the ranking shows a leader followed by a long tail of single- or few-filing entrants. The recent-year momentum data also shows that even the most active filers have slowed sharply, so today's ranking leader is not necessarily tomorrow's most active filer.
Not on current evidence. Filings rose from 35 in 2017 to a peak of 168 in 2025, but the growth rate flattened well before that peak, with 2022 sitting at a midpoint of 108. The partial 2026 count of 26 is too early to judge on its own, since publication typically lags filing by around 18 months, but the shape of the curve through 2025 already points to a plateau rather than continued acceleration.
The core H01M battery classification is crowded by construction of this search, and C01B inorganic-compound and coating chemistry carries the next-heaviest claim density at 399 of 999 records. Sub-areas with visibly thinner filing, such as nanoscale particle morphology control, alkali-metal co-doping and condensation-polymer binder chemistry, show more open claim space. That said, thin filing density is not proof a claim will be easy to secure — it may simply mean the branch's commercial relevance hasn't yet driven filing volume.
US12021206B2 claims a recycling method for waste lithium iron phosphate that uses a selective oxidation-reduction sintering process — a mild oxidizing gas, water vapor, CO2 or a mixture, applied in a primary sintering step, followed by lithium and carbon supplementation and a secondary sintering step to yield recycled LFP suitable for reuse in a lithium-ion battery. It is a recycling-route claim rather than a virgin-material synthesis claim, held by LBM New Energy. Anyone building a recycling process around gas-phase oxidation-reduction sintering conditions should review this claim's scope carefully before finalizing a process design.
650 of the 999 tracked records route through the Chinese receiving office, compared with 116 in the US and 85 at the EPO. This reflects both the concentration of LFP cathode material manufacturing in China and the fact that many domestic manufacturers file first, or exclusively, in their home jurisdiction. For companies assessing supply-chain or manufacturing risk, this means the Chinese filings are the primary body of prior art to clear, not a supplementary one.
Answers are grounded in the same dataset. Derived from a Patsnap search on Lithium Iron Phosphate Battery Efficiency Enhancement covering 2015–2026, data cut-off 2026-07-31. Counts reflect published records only and shift as new filings publish.Run this in Eureka MCP
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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.
Nothing on this page constitutes an exhaustive prior-art, novelty, freedom-to-operate, or validity search, nor does it constitute legal, financial, investment, or professional advice, and it should not be relied upon as such. Any patent, commercial, or strategic decision should be verified independently and reviewed with qualified patent, legal, and domain professionals. Patsnap makes no warranties, express or implied, as to the accuracy, completeness, or fitness for any particular purpose of the information presented.
Machine translation. Assignee and organisation names originally recorded in Chinese, Japanese or Korean have been rendered into English by an AI translation step so that the tables stay readable. These renderings are best-effort and may not match a company's registered English name; the original name is what the underlying patent record carries, and it is what any Eureka query launched from this page uses.