Hybrid Seed Production Patents: Leaders & White Space 2026
- Five filers hold 43.2% of the field. 223 of 516 records in scope sit with the top five assignees, with a long tail of single- and double-digit filers behind them.
- Filing has cooled since its 2017 peak. Annual output ran at 31 records in 2017 and had fallen to a 2022 midpoint of 9, before the most recent, still-incomplete year.
- Claims cluster tightly in two IPC classes. 96.9% of records carry an A01H plant-breeding class and 63.0% also carry a C12N genetic-engineering class — the overlap is where the densest prior art sits.
What this landscape covers
This dataset tracks 516 published records filed between 2015 and mid-2026 that combine hybrid seed production terms — cytoplasmic male sterility, restorer lines, seed purity, pollination control, heterosis prediction and production cost — with IPC classes covering plant breeding, plant cultivation and planting/sowing. The search string requires both a hybrid-breeding-system term in the title or abstract and a specific technical qualifier such as restorer line or seed purity, so the corpus is narrower than a generic “hybrid seed” search and skews toward records that describe an actual production mechanism rather than a downstream trait claim.
Filing offices split across China, the United States, Europe, Australia, Canada and the WIPO PCT route, reflecting a field where commercial hybrid seed programmes span row-crop, oilseed and vegetable breeding across multiple regulatory jurisdictions at once.
Filing trend and technology composition
Two views of the same 516 records: how filing volume has moved year over year, and which IPC subclasses carry the claims.
A 2017 peak followed by a steady decline
Annual filings peaked at 31 in 2017 and fell to a 2022 midpoint of 9 before the most recent year, which is still incomplete against the 2026-07-31 cut-off. Publication typically lags filing by around 18 months, so the last one to two years will always look thinner than they will eventually prove to be — read the tail as under-counted, not as proof the field has stopped.
Claims concentrate in two overlapping classes
A01H (new plants / plant breeding) appears on 96.9% of the 516 records, and C12N (microorganisms and genetic engineering) on 63.0% — the two classes overlap heavily, meaning most CMS and restorer-line claims are drafted to cover both the breeding method and an underlying genetic mechanism. C12Q (DNA/enzyme testing, 37.6%) and C07K (peptides and proteins, 31.8%) follow at meaningfully lower density, while A01C (planting and sowing, 2.1%) is the thinnest class in the set.
Shares are the percentage of the 516 records in scope. A patent can carry several IPC classes, so the shares add up to more than 100%.
Go deeper on Hybrid Seed Production Systems with Eureka
This page is one run against one query. Ask Eureka your own question about hybrid seed production systems and every answer comes back with the patent numbers behind it.
Try EurekaThe most-cited records in this space
Novel Cytoplasmic Male Sterility System for Brassica Species and its Use for Hybrid Seed Production in Indian Oilseed Mustard Brassica Juncea
Filed by the University of Delhi, this record describes a CMS system ('126-1') in Brassica species identified by a distinct mitochondrial DNA RFLP signature, along with methods for obtaining male sterile lines and restoring fertility in B. juncea for hybrid seed production. Fertility can be restored by crossing male sterile plants with any B. juncea genotype other than the maintainer genotype, and the same genotype maintains male sterility after a specified number of backcrosses.Representative of the CMS-plus-restorer-line claim pattern that recurs across the most-cited records in this dataset.
| # | Publication no. | Patent title | Citations |
|---|---|---|---|
| 1 | US6229072B1 | Cytoplasmic male sterility system production canola hybrids | 714 |
| 2 | WO1998027806A1 | Oilseed brassica containing an improved fertility restorer gene for ogura cytoplasmic male sterility | 648 |
| 3 | WO2005002324A2 | Method of producing double low restorer lines of brassica napus having a good agronomic value | 623 |
| 4 | WO2006021972A1 | A novel cytoplasmic male sterility system for brassica species and its use for hybrid seed production in indi… | 617 |
| 5 | WO1990008828A2 | Molecular methods of hybrid seed production | 217 |
| 6 | EP0329308A2 | Antisense gene systems of pollination control for hybrid seed production | 157 |
| 7 | US5741684A | Molecular methods of hybrid seed production | 113 |
| 8 | US5356799A | Antisense gene systems of pollination control for hybrid seed production | 102 |
| 9 | US20090165166A1 | Method to enhance yield and purity of hybrid crops | 93 |
| 10 | US6013859A | Molecular methods of hybrid seed production | 93 |
Citation counts reflect influence within the searched corpus and favour older filings; they are not a measure of current commercial importance.
Each row carries its publication number; clicking a row searches Eureka by that number.
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Browse MCP servers →What the data means for filing strategy
Three patterns stand out once volume, concentration and technology mix are read together.
The top of the field is tight, the rest is thin
The top five assignees combined hold 223 of the 516 records in scope, and the top ten extend that to 296, or 57.4%. Below tenth place — held at 12 records — filing drops off quickly into a long tail of organisations with only one or two records each, which is where freedom-to-operate searches need the most manual review.
Volume has not recovered since its peak
Filing peaked in 2017 and had fallen roughly two-thirds by the 2022 midpoint, with the most recent year further down but still incomplete. Several of the most active historical filers recorded zero filings in the latest tracked year, which is consistent with either a mature, already-claimed core or a pause ahead of new filing activity not yet visible in publication data.
Two classes carry almost all the claim density
Nearly every record in scope touches the core plant-breeding class A01H, and almost two-thirds also carry the genetic-engineering class C12N — together these define the crowded centre of the field. A01C, covering planting and sowing mechanics, appears on only 2.1% of records, marking it as comparatively open relative to the breeding-method core.
Eureka can read the same corpus for gaps instead of for coverage: under-claimed branches adjacent to hybrid seed production systems, with the prior art for and against each one.
Who is filing, and where the gaps sit
A small group of agricultural seed and life-science majors anchor the ranked leaders, with universities and regional seed companies filling out the long tail.
A single filer leads by a wide margin
The top-ranked assignee holds 60 records against a fifth-place figure of 30 and a tenth-place figure of 12 — a steep drop-off that signals one organisation has built a materially larger portfolio than any single competitor in this dataset.
Co-filing is rare but concentrated
Only 10 co-assignee pairs appear across the dataset, and the strongest of them — a joint filing relationship between two large research-and-industry organisations — accounts for 13 shared records. Most collaboration below that pair is limited to single-digit joint filings between university partners.
Several historical leaders have gone quiet
A number of the organisations with the largest historical portfolios, including the top-ranked filer, recorded zero filings in the latest tracked year. That is consistent with a crowded core that has already been claimed, though publication lag means recent activity may not yet be visible.
| Assignee | Recent year | YoY |
|---|---|---|
| Dow AgroSciences LLC | 0 | — |
| Pioneer Hi-Bred International, Inc. | 0 | -100% |
| BASF SE | 0 | — |
| National Institute of Agricultural Research | 0 | — |
| KWS SAAT SE & Co. KGaA | 0 | — |
| McGill University | 0 | — |
| PALADIN HYBRIDS | 0 | — |
| Commonwealth Scientific and Industrial Research Organisation (CSIRO) | 0 | — |
Where to take this analysis
This page maps the field at a point in time. Turning it into a filing or licensing decision means going deeper on specific claims and specific competitors.
Run a freedom-to-operate check on a specific CMS mechanism
The most-cited records in this dataset concentrate around Brassica CMS systems and restorer-gene claims — any new filing in that space should be checked against those specific claim sets before drafting.
Explore the claims in Eureka →Track the quiet leaders for renewed filing
Several top assignees show zero filings in the latest tracked year. Watching for new applications from those same organisations is a low-cost way to catch a shift in strategy early.
Set up monitoring in Eureka →Test the under-claimed branches for a first-filer position
Planting/sowing integration and production-cost optimisation carry visibly lower filing density than the CMS core, which may leave room for a narrower, well-drafted first claim.
Search white space in Eureka →Common questions on hybrid seed production patents
Filing is concentrated at the top of a 100-assignee ranking, with the leading organisation holding 60 records and the top five combined accounting for 223 of the 516 records in scope, or 43.2%. That leader is a major agricultural seed and life-science company, consistent with the field's roots in commercial row-crop and oilseed breeding. Below the top ten, which together hold 57.4% of records, filing drops sharply into a long tail of universities, national agricultural institutes and regional seed companies with only a handful of records each.
Cytoplasmic male sterility (CMS) is a naturally occurring or engineered trait, carried in mitochondrial DNA, that prevents a plant from producing viable pollen while leaving female fertility intact. It is the core mechanism behind large-scale hybrid seed production because it removes the need for manual or mechanical emasculation when crossing parent lines. The most-cited records in this dataset, including several Brassica-specific CMS systems, describe both the sterility mechanism itself and the restorer genes needed to bring fertility back in the commercial hybrid.
Yes. Filing peaked at 31 records in 2017 and had fallen to a midpoint of 9 records by 2022, with the most recent tracked year lower still, though that final year is incomplete against the 2026-07-31 data cut-off. Because publication typically lags filing by around 18 months, the most recent one to two years will always understate true activity. Several historically active assignees also recorded zero filings in the latest tracked year, which points to a mature, already-claimed core rather than continued expansion.
The clearest gap by filing density is A01C, covering planting and sowing mechanics, which appears on only 2.1% of the 516 records in scope compared with 96.9% for the core plant-breeding class A01H. Heterosis prediction methods, production-cost optimisation and mechanical pollination control equipment also show comparatively thin coverage relative to the CMS and restorer-line core. These branches are adjacent to the crowded centre rather than unrelated to it, so a first claim there still needs to be checked against the dominant CMS patents for overlap.
China leads with 108 records, followed closely by the United States at 105, then Europe via the EPO at 65, Australia at 60, Canada at 47 and the WIPO PCT route at 42. The spread across six major offices reflects a field where commercial hybrid seed programmes for row crops, oilseeds and vegetables are commercialised across multiple regulatory regions simultaneously, making multi-jurisdiction filing and PCT strategy a normal part of protecting a hybrid breeding system.
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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.