Precision Fermentation Contamination Control Patents: Top Companies 2026
- 83.0% concentration. The top 5 of 18 ranked assignees hold 88 of the 106 records in scope — filing here is dominated by a small group, not a broad field.
- Bioreactor hardware dominates. 93.4% of records sit in C12M (bioreactors & enzyme apparatus), far ahead of C12N genetic-engineering claims at 34.0%.
- Filing is still climbing, not cooling. From 2021 to 2024 — the last complete year on record — filings rose 4 to 6, up 50%, even after the 2018 peak of 33.
Filing growth compares 2021 (4 records) with 2024 (6) — a three-year span. 2024 is the most recent year we treat as complete: publication lags filing by roughly 18 months, so 2025 onwards are still filling in and any growth rate that ends there would understate the field. Top-5 share is the combined record count of the five largest assignees divided by all 106 records in scope (CR5), not by the ranked leaders only.
What this landscape covers
Precision fermentation contamination control sits at the intersection of bioreactor engineering and microbial process claims: bioburden detection, aseptic sampling, sterile boundary maintenance, steam sterilization and batch isolation. The scope here pulls 106 published records filed against IPC classes covering fermentation processes (C12P), microorganisms and genetic engineering (C12N), and bioreactor or enzyme apparatus (C12M). Because a single record can span more than one of these classes, the technology shares in this report add up to more than 100% of the record total — that is expected, not an error.
Publication lags filing by roughly 18 months, so the most recent one or two years in any trend understate real filing activity. Treat 2024 as the last complete year for growth comparisons, and read 2025-2026 counts as still filling in.
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Filing trend and technology composition
Two views of the same 106 records: how filing activity has moved year over year, and which IPC subclasses carry the claims.
Filing trend, 2017-2026
Filings peaked in 2018 at 33 records, well above the surrounding years. Filing activity from 2021 to 2024, the last complete year, rose from 4 to 6 records — a 50% increase — indicating renewed filing interest after the initial peak, not a cooling field. 2025 and 2026 counts will rise as publication catches up.
Technology composition by IPC subclass
C12M (bioreactors and enzyme apparatus) appears in 93.4% of the 106 records in scope, making hardware and vessel design the dominant claim surface. C12N (microorganisms and genetic engineering) follows at 34.0% and C12P (fermentation and enzymatic synthesis) at 28.3%. Separation processes under B01D reach 23.6%, while food, feed and protein-adjacent classes (A23K, A23L, A23J) and catalysis (B01J) each sit under 8%, marking them as smaller but present claim areas.
Shares are the percentage of the 106 records in scope. A patent can carry several IPC classes, so the shares add up to more than 100%.
Go deeper on Precision Fermentation Contamination Control with Eureka
This page is one run against one query. Ask Eureka your own question about precision fermentation contamination control and every answer comes back with the patent numbers behind it.
Try EurekaRepresentative filing and most-cited records
Vessel and reactor for upstream production of biological products
The present invention relates to vessels for use as bioreactor, and reactor systems or apparatuses including such vessels. The vessels comprise a tank comprising a plastic or first cured resin material which is biocompatible and which can withstand steam sterilization.Filed by Good Dog Food Limited; publication and filing date are shown in the table.
| # | Publication no. | Patent title | Citations |
|---|---|---|---|
| 1 | WO2018144965A1 | Microbial conversion of co 2 and other c1 substrates to vegan nutrients, fertilizers, biostimulants, and syst… | 77 |
| 2 | US20170029758A1 | Horizontal Single Use Pressurizable Modular Multi-Atitator Microbial Fermentor | 29 |
| 3 | US20150259639A1 | Gas-fed fermentation systems | 24 |
| 4 | WO2017218978A1 | Gas-fed fermentation reactors, systems and processes | 21 |
| 5 | WO2018132379A1 | Gas-fed fermentation reactors, systems and processes utilizing a vertical flow zone | 16 |
| 6 | US10689610B2 | Gas-fed fermentation reactors, systems and processes utilizing gas/liquid separation vessels | 12 |
| 7 | WO1998059285A2 | System and method for simulation, modeling and scheduling of process support operations in biopharmaceutical … | 11 |
| 8 | US10538730B2 | Gas-fed fermentation reactors, systems and processes | 9 |
| 9 | US20170362562A1 | Gas-fed fermentation reactors, systems and processes | 9 |
| 10 | US20150175951A1 | Vertical mixing bioreactor and drive system therefor | 9 |
Citation counts favour older records inside a searched corpus — read them as a signal of influence on the field, not as a ranking of current importance.
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Browse MCP servers →What the numbers mean for filing strategy
Three signals stand out once the counts are put next to each other: concentration at the top, a hardware-heavy claim surface, and a filing curve that has not flattened.
Filing is concentrated, not fragmented
Of 18 ranked assignees, the top 5 combined account for 88 of the 106 records in scope. The leader alone holds 45 records. A new entrant is filing into a field where a small group already occupies most of the claim space, particularly around bioreactor hardware.
Hardware, not biology, is the dense ground
C12M — bioreactors and enzyme apparatus — appears in the overwhelming majority of records, ahead of genetic-engineering claims under C12N at 34.0% and fermentation process claims under C12P at 28.3%. Contamination control here is claimed mostly as vessel and system design.
Activity is rising after the 2018 peak
The field peaked at 33 filings in 2018, then settled lower before climbing again: 4 filings in 2021 to 6 in 2024, the last complete year. That is growth, not decline — reading 2025-2026 as flat would ignore the roughly 18-month publication lag.
US and EPO lead receiving offices
The United States accounts for the largest share of receiving-office filings at 28, ahead of Europe (EPO) at 12 and WIPO/PCT at 11. Australia and Canada each sit at 9, with Israel at 8 — a filing footprint concentrated in a handful of jurisdictions rather than spread evenly.
Eureka can read the same corpus for gaps instead of for coverage: under-claimed branches adjacent to precision fermentation contamination control, with the prior art for and against each one.
Who holds the claims
The ranked list covers 18 assignees across the 106 records in scope — not a top-50 or top-100, but the whole set the data endpoint returns for this search.
One assignee holds close to half the field
The leading assignee's 45 records, against a field of 106, sets the filing benchmark for anyone assessing freedom to operate in bioreactor contamination control. Any competitive read of this space has to start with what that portfolio actually claims, not just its size.
A sharp drop after the leaders
Filing counts fall off quickly outside the top few positions — fifth place holds 4 records and tenth place holds 2. That gap is where smaller, more specialised filers sit, often with narrower but still enforceable claims.
A long tail of single- and few-filing entrants
Beyond the top 10, which together hold 92.5% of the 106 records, the remaining ranked assignees each hold a small number of filings. That pattern is typical of a field where a handful of early movers built broad hardware portfolios before smaller players entered around specific niches.
| Assignee | Recent year | YoY |
|---|---|---|
| Calysta Inc | 0 | — |
| Kiverdi Inc | 0 | — |
| Amgen Inc | 0 | -100% |
| Toray Industries Inc | 0 | — |
| Locus IP Co LLC | 0 | — |
| BROWN OWEN (I) (US) | 0 | — |
| RIKEN | 0 | — |
| STADLER ERNEST LOUIS | 0 | — |
Where to take this analysis
The counts here answer where filing has happened. The next questions are what those claims actually cover and where a new filing could still land.
Check freedom to operate against the leader's portfolio
With one assignee holding 45 of 106 records, any new filing in bioreactor or vessel design should be checked claim-by-claim against that portfolio before drafting begins.
Run a freedom-to-operate check in EurekaMap the under-claimed sub-areas
In-line sensor calibration, aseptic sampling ports and steam-in-place validation sit outside the densest claim clusters and may offer room for a defensible first-to-file position.
Explore white space in EurekaTrack momentum, not just totals
Filing rose 50% from 2021 to 2024; watching which assignees are filing now, not just who holds the most records historically, shows where competitive pressure is building.
Set up assignee monitoring in EurekaCommon questions on this landscape
One assignee leads the ranked field with 45 of the 106 records in scope, well ahead of the next four combined. The top 5 of 18 ranked assignees together hold 83.0% of all records, so the field is concentrated rather than fragmented. That said, the ranking covers only 18 assignees total, so 'leading' here means leading within a fairly small, specialised group of filers rather than a broad industry-wide field.
Filing peaked in 2018 at 33 records and settled lower afterward, but the most recent complete comparison shows growth: filings rose from 4 in 2021 to 6 in 2024, a 50% increase. Counts for 2025 and 2026 look low only because publication typically lags filing by about 18 months, so those years are still filling in. Treat 2024 as the most reliable recent-year benchmark.
Bioreactor and enzyme apparatus claims under IPC class C12M appear in 93.4% of the 106 records in scope, making vessel and system design the densest claim area by far. Microorganism and genetic-engineering claims under C12N (34.0%) and fermentation process claims under C12P (28.3%) follow well behind. Separation processes such as filtration (B01D) sit at 23.6%, and food- or feed-adjacent classes are all under 8%, marking them as smaller but active niches.
The densest claim territory is bioreactor hardware and vessel design, held largely by a handful of leading assignees, so a new filing there faces heavy prior art. Sub-areas such as in-line bioburden sensor calibration, single-use aseptic sampling ports, and batch isolation methods for continuous (rather than batch) fermentation appear less crowded based on the technology composition data. A freedom-to-operate check against the top assignees' specific claims is the necessary next step before committing to any of these.
EP4717757A1, filed by Good Dog Food Limited, claims bioreactor vessels made from a biocompatible plastic or cured resin material capable of withstanding steam sterilization, along with reactor systems built around such vessels. Its abstract frames the invention specifically as vessel material and construction for upstream biological production. Anyone designing sterilizable single-use or resin-based bioreactor vessels should read this record's full claim set before finalising a materials approach, since it sits directly in the C12M hardware space that dominates this landscape.
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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.