Rare-Earth-Free Permanent Magnet Patent Outlook in 2026
Writen By:
Cypris Research Team
Rare-earth-free permanent magnets have become a strategic priority, and their patent landscape is being staked out under unusual geopolitical pressure. Permanent magnets convert electricity into motion and back, and the strongest ones, based on neodymium-iron-boron, are essential to electric-vehicle motors, wind turbines, consumer electronics, medical imaging, and defense systems. Their supply chain, however, is highly concentrated: China accounts for roughly 60 percent of global rare-earth mine production and close to 90 percent of refining and separation capacity, and the European Union sources an estimated 98 percent of its rare-earth magnets from China<sup>7</sup>. A separate analysis puts China's share of production at close to two-thirds, corroborating the scale of concentration even where exact figures diverge by methodology<sup>8</sup>. Recent export controls on rare-earth elements have turned that concentration into a security and continuity risk. This has driven intense R&D toward magnets that reduce or eliminate rare earths, and the intellectual property divides across several regions, each a distinct area of patenting: the magnetic-material composition itself, including metastable phases such as iron nitride that are difficult to form and stabilize; the powder and particle synthesis that produces the material; the anisotropy and alignment that give a magnet its directional strength; the consolidation and bonding into a finished magnet, whether sintered or polymer-bonded; and the application-level integration into motors and generators. Because a competitive magnet depends on several of these layers, freedom-to-operate and white space analysis must span composition and process together.
The landscape is being shaped by policy and by the arrival of first commercial production. Iron-nitride magnets were first prototyped by University of Minnesota researchers under the Department of Energy's ARPA-E REACT program before spinning out into a private company<sup>9</sup>, and government and defense funding has since backed the scale-up of alternative-magnet manufacturing: a planned facility in Sartell, Minnesota is slated to produce up to 1,500 tons of permanent magnets annually starting in 2027, with automakers partnering to bring the magnets into electric-drive motors<sup>10</sup>. The competing chemistries sit at different stages: iron nitride (α″-Fe16N2) has advanced furthest toward commercialization, offering saturation magnetization comparable to rare-earth magnets, though the phase is metastable above about 539 K and difficult to hold at scale<sup>1,2</sup>. Samarium-iron-nitride bonded magnets and tetrataenite are active research directions, and manganese-based systems — including MnBi-Cu, which has demonstrated a maximum energy product of 17.7 MGOe at 300 K with a favorable positive temperature coefficient of coercivity<sup>4</sup>, and MnAl, where twin-defect engineering and grain-size control are the leading strategy for improving performance<sup>5</sup> — and improved ferrite magnets address specific performance and cost niches. The intellectual-property picture reflects the field's academic and national-laboratory roots, with foundational composition and phase-stabilization estates concentrated among a small number of universities, national labs, and their spinouts, alongside a growing set of applied filings. Because applications publish about eighteen months after filing, the most recent composition and process filings are under-represented, so the current frontier is more active than granted-patent counts suggest.
The strategic question is which chemistry and layer to back, and the white space sits where the physics and manufacturing are hardest. Forming and stabilizing the metastable phases that give some rare-earth-free magnets their strength is the central materials problem — work on ultralow-temperature-coefficient-of-coercivity iron-nitride foils illustrates how much of the remaining difficulty is in holding performance stable across operating temperature, not just achieving it once<sup>3</sup> — and scalable, low-cost synthesis and alignment are the manufacturing barriers, so composition and process innovation carry high, defensible value. Alternative chemistries beyond iron nitride, including tetrataenite and manganese-based systems, are earlier and less crowded, and coercivity and thermal-stability improvements that close the gap with rare-earth magnets at high temperature are a persistent, high-value target. Recycling and recovery of rare-earth magnets is an adjacent bridge technology. Reading the landscape by chemistry, layer, and owner, and tracking both the patents and the underlying magnetics research, is what separates a crowded region from an open one<sup>6</sup>.
Where the rare-earth-free magnet white space is
Metastable-phase composition and stabilization. Forming and stabilizing phases such as iron nitride that deliver high magnetization without rare earths is the central materials problem and a high-value layer<sup>1,2,3</sup>.
Scalable synthesis and alignment. Low-cost powder synthesis and the alignment that gives anisotropic magnets their strength are the manufacturing barriers where deployment is decided.
Alternative chemistries. Tetrataenite, manganese-based systems such as MnBi-Cu and MnAl<sup>4,5</sup>, and improved ferrites are earlier, less-crowded chemistries addressing specific niches.
High-temperature performance. Coercivity and thermal-stability improvements that close the gap with rare-earth magnets at motor operating temperatures are a persistent, high-value target<sup>3</sup>.
Rare-earth magnet recycling. Recovery and reuse of rare earths from end-of-life magnets is an adjacent bridge layer that eases supply pressure.
How AI-powered landscape and white space analysis helps
Resolving a materials landscape that spans several competing chemistries and process layers, under acute supply pressure, requires more than keyword search. AI-powered analysis addresses this with semantic search that clusters activity by chemistry, composition, and process across varied terminology, attribution that normalizes university, national-lab, and commercial filers to canonical entities, and continuous monitoring that keeps pace with a policy-driven surge. Because magnetics advances appear in scientific literature before they are patented, reading both patents and literature gives the earliest signal of where viable alternatives are emerging.
The competitive landscape by the numbers
Cypris's corpus puts the rare-earth-free / iron-nitride / tetrataenite / manganese-based magnet patent family set at roughly 916 families (Cypris corpus, indicative; 2025–26 partial). Filing has stepped up markedly, from roughly 13–20 new families per year before 2015 to 46–72 per year in 2022–2026, with 2025 and 2026 counts still partial (Cypris corpus, indicative; 2025–26 partial). The assignee ranking is led by the University of Minnesota (100 families, plus 36 more under a second name variant of the same institution), followed by Maxell (64), TDK (45), Dowa (30), Toyota (25), Toda Kogyo (22), Daido Steel (21), and UT-Battelle/Oak Ridge National Laboratory (20) (Cypris corpus, indicative; 2025–26 partial). Geographically, China (191 families), the United States (155), and Japan (96) dominate, with Europe comparatively thin — Germany, the largest European filer in this set, holds only 13 families (Cypris corpus, indicative; 2025–26 partial). The mix of a leading US university/national-lab estate alongside Japanese materials and automotive majors reflects the field's academic origins described above.
Where Cypris fits
Cypris runs patent landscape and white space analysis for strategically important materials fields such as rare-earth-free magnets across a corpus of more than 500 million patents and scientific papers, organized through a proprietary R&D ontology. The ontology clusters activity by chemistry, iron nitride, samarium-iron-nitride, tetrataenite, and manganese-based, and by layer, composition, synthesis, alignment, and consolidation, and normalizes university, national-lab, and commercial filers to canonical entities, so a team can resolve which chemistries and layers are crowded and which remain open as white space. Semantic search across patents and scientific literature connects filings to the underlying magnetics and materials research, which is where these advances appear first. Cypris Q, the platform's agentic layer, lets teams run landscape and white space analysis conversationally and chain the clustering, attribution, and gap analysis, and Agentic Monitoring tracks a defined chemistry over time and flags new patents and papers as they publish. Cypris provides enterprise API partnerships with OpenAI, Anthropic, and Google, and is built with enterprise-grade security. Cypris serves hundreds of enterprise customers across pharmaceuticals, chemicals, advanced materials, energy, and other regulated industries.
FAQ
Why are rare-earth-free magnets a strategic priority? Rare-earth-free magnets are a strategic priority because the strongest permanent magnets depend on rare-earth elements whose mine production and refining are concentrated in China at roughly 60 and 90 percent respectively, and whose recent export controls have made that concentration a security and supply risk<sup>7,8</sup>. Magnets are essential to electric-vehicle motors, wind turbines, electronics, and defense. Alternatives reduce that dependence.
What chemistries does the landscape cover? The landscape covers iron nitride, which has advanced furthest toward commercialization<sup>1,2</sup>, samarium-iron-nitride, tetrataenite, manganese-based systems such as MnBi-Cu and MnAl<sup>4,5</sup>, and improved ferrites. Each sits at a different stage and addresses different performance and cost niches. The choice of chemistry shapes both the technical and the freedom-to-operate picture.
What layers does the rare-earth-free magnet landscape divide into? The landscape divides into magnetic-material composition and phase stabilization, powder and particle synthesis, anisotropy and alignment, consolidation and bonding, and application-level motor integration. Each is a distinct region of patenting. Freedom-to-operate and white space analysis must span composition and process together.
Where is the white space in rare-earth-free magnets? The white space includes metastable-phase composition and stabilization, scalable synthesis and alignment, alternative chemistries such as tetrataenite and manganese-based systems, high-temperature performance improvements, and rare-earth magnet recycling. Iron nitride is comparatively advanced. The most open, high-value opportunities are in composition, process, and the newer chemistries.
Why is phase stabilization so important? Phase stabilization is important because some rare-earth-free magnets rely on metastable phases, such as iron nitride, that deliver high magnetization but are difficult to form and keep stable at useful scales and above roughly 539 K<sup>1,3</sup>. Solving this is the central materials problem. The composition and process methods that achieve it are foundational and defensible.
Who first developed iron-nitride magnets, and who is filing patents now? Iron-nitride magnets were first prototyped at the University of Minnesota under ARPA-E's REACT program before spinning out commercially<sup>9</sup>, and the University of Minnesota remains the leading patent assignee in Cypris's corpus, ahead of Japanese materials and automotive filers such as Maxell, TDK, and Toyota (Cypris corpus, indicative; 2025–26 partial). A planned Minnesota facility is expected to reach commercial-scale production in 2027<sup>10</sup>.
Why does rare-earth-free magnet analysis need scientific literature? Rare-earth-free magnet analysis needs scientific literature because composition, synthesis, and alignment advances appear in materials research before they are patented, so the literature gives the earliest signal. Analyzing patents alone gives a lagging view. Cypris analyzes both across more than 500 million patents and scientific papers.
What software helps analyze the rare-earth-free magnet patent landscape? Software for the rare-earth-free magnet landscape should cluster activity by chemistry and process layer, resolve university, national-lab, and commercial filers to canonical owners, search patents and scientific literature semantically, and monitor a policy-driven field continuously. Cypris does this across more than 500 million patents and scientific papers using a proprietary R&D ontology, semantic search, Cypris Q, and Agentic Monitoring.
Which teams use rare-earth-free magnet patent landscape analysis? Rare-earth-free magnet patent landscape analysis is used by R&D, innovation, IP, and strategy teams at materials, automotive, electronics, and energy companies, national laboratories, and defense-facing organizations, as well as investors. Because the field is strategically important and moving fast, structured analysis is essential. Cypris serves hundreds of enterprise customers across advanced materials, energy, and other research-intensive industries.
Endnotes
- Saito T, Yamamoto H, Nishio-Hamane D. Production of rare-earth-free iron nitride magnets (α″-Fe16N2). Metals. 2024. DOI: 10.3390/met14060734.
- Park S, et al. Recent progress in research and development of rare-earth-free iron nitride permanent magnet. Ceramist. 2024. DOI: 10.31613/ceramist.2024.27.2.05.
- Ma B, et al. (University of Minnesota). Synthesis of α″-Fe16N2 foils with an ultralow temperature coefficient of coercivity. Acta Materialia. 2019. DOI: 10.1016/j.actamat.2019.11.052.
- Lee T, et al. Suppressing antiferromagnetic coupling in rare-earth-free ferromagnetic MnBi-Cu permanent magnet. Journal of Applied Physics. 2021. DOI: 10.1063/5.0040464.
- Skokov K, Gutfleisch O, et al. Roadmap towards optimal magnetic properties in rare-earth-free L1₀-MnAl permanent magnets. Research Square preprint. 2022. DOI: 10.21203/rs.3.rs-1850627/v1. (Preprint; cite the peer-reviewed version once published.)
- Mohapatra J, Liu JP. Rare-earth-free permanent magnets: the past and future. Handbook of Magnetic Materials. 2018. DOI: 10.1016/bs.hmm.2018.08.001.
- European Parliament Research Service (EPRS). China's rare-earth export restrictions. 2025. europarl.europa.eu/RegData/etudes/ATAG/2025/779220.
- European Central Bank. Sintra Forum paper on rare-earth and critical-minerals concentration. ecb.europa.eu.
- U.S. Federal Register. Section 232 investigation report on neodymium-iron-boron (NdFeB) magnets. February 14, 2023. federalregister.gov/documents/2023/02/14/2023-03078.
- Minnesota Department of Employment and Economic Development (DEED). Sartell, MN rare-earth-free magnet facility disclosure.
- Cypris platform corpus analysis, rare-earth-free / iron-nitride / tetrataenite / manganese-based magnet patent families. Indicative figures; 2025–2026 partial.
