Hydrogen Peroxide Room Decontamination Patents: Leaders & Trends 2026
- Concentrated at the top. The top 5 assignees hold 445 of 691 records in scope (64.4%), and the top 10 hold 77.9% — a small group controls most of the documented claim space.
- Filing has pulled back sharply. From 2021 to 2024, filings by the leading assignee dropped 49 to 15, a 69% decline over that three-year span, after a 2020 peak of 60 records.
- Sterilizing/disinfecting claims dominate. A61L covers 68.0% of the 691 records in scope, more than three times the next most common class, C12Q at 21.3%.
Filing growth compares 2021 (49 records) with 2024 (15) — 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 691 records in scope (CR5), not by the ranked leaders only.
What this landscape covers
This dataset tracks 691 published patent families filed between 2015 and mid-2026 that combine hydrogen peroxide vapor or fogging decontamination with the operational controls that make it usable in a real room: distribution uniformity, material compatibility, aeration time, biological indicator verification, room sealing and operator exclusion. The search string deliberately pairs the chemistry with the validation and safety layer, so the corpus is weighted toward claims that a facility could actually deploy rather than lab-only vapor generation.
Filing activity peaked in 2020 at 60 records and has since receded, with the most recent complete year, 2024, well below that level. Because publication typically lags filing by roughly 18 months, 2025 and 2026 figures in the trend chart are still filling in and should not be read as a further decline.
Filing trend and technology composition
Two views of the same 691-record corpus: how filing volume moved year over year, and which IPC subclasses carry the claim density.
Filing trend: a 2020 peak followed by a pullback
Annual filings rose to a peak of 60 in 2020, then fell from 49 in 2021 to 15 in 2024 — a 69% drop over that span. The leader's own recent-year filings echo this: down 50% year-over-year in the latest tracked period. Treat 2025-2026 counts as provisional given publication lag.
IPC composition: sterilization claims dominate, verification classes follow
A61L (sterilising & disinfecting) appears on 68.0% of the 691 records, far ahead of C12Q (measuring/testing involving enzymes or DNA, used for biological indicators) at 21.3% and G01N (material analysis & testing) at 19.5%. Because records can carry multiple IPC codes, these shares sum to well over 100%; they describe claim density per class, not a partition of the corpus.
Shares are the percentage of the 691 records in scope. A patent can carry several IPC classes, so the shares add up to more than 100%.
Go deeper on Hydrogen Peroxide Room Decontamination with Eureka
This page is one run against one query. Ask Eureka your own question about hydrogen peroxide room decontamination and every answer comes back with the patent numbers behind it.
Try EurekaThe most-cited records anchoring this space
US20080206801A1 — Biological indicator for use with vaporous microbial deactivating agents
A biological indicator and method of making same. The carrier has a recess formed in it to restrict movement of an inoculum containing microorganisms suspended in a medium with a wetting agent, so the suspension flows evenly across the carrier surface instead of stacking. Microorganisms are prepared by removing extraneous material and sonicating to break up agglomerations before deposit.Filed by American Sterilizer Company, published 2008-08-28. Sits squarely in the biological-indicator verification layer that this dataset's search string was built to isolate.
| # | Publication no. | Patent title | Citations |
|---|---|---|---|
| 1 | US5445792A | Optimum hydrogen peroxide vapor sterlization method | 205 |
| 2 | US20090257911A1 | Method and System for Sterilizing an Analyte Sensor | 171 |
| 3 | US6325972B1 | Apparatus and process for concentrating a liquid sterilant and sterilizing articles therewith | 161 |
| 4 | US20060008379A1 | Room decontamination with hydrogen peroxide vapor | 157 |
| 5 | US5788925A | Method for real time monitoring and control of load sterilization and parametric release | 156 |
| 6 | US20050074359A1 | Aircraft and passenger decontamination system | 115 |
| 7 | US5872004A | Test pack for assessing the efficiency of a sterilization process | 114 |
| 8 | US5508009A | Optimum hydrogen peroxide vapor sterilization system | 114 |
| 9 | US20150374868A1 | Sterilization container capable of providing an indication regarding whether or not surgical instruments ster… | 110 |
| 10 | US20030086820A1 | Decontamination of surfaces contaminated with prion-infected material with gaseous oxidixing agents | 102 |
Citation counts inside a searched corpus favor older filings that have had more time to accumulate citations — read them as a signal of influence on later filings, not as a measure of current commercial relevance.
Each row carries its publication number; clicking a row searches Eureka by that number.
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Three findings a search of the raw documents would not surface without aggregating across the full 691-record set.
A small group holds most of the documented claim space
The top 5 assignees account for 445 of the 691 records in scope, and the top 10 extend that to 538, or 77.9%. New entrants working on core vapor-generation or biological-indicator claims are filing into territory already dense with prior art from a handful of established medical-device and sterilization companies.
Activity has cooled from its 2020 peak
Filings fell from 49 in 2021 to 15 in 2024, a 69% decline, after peaking at 60 in 2020. The leading assignee's own latest-year filings are down 50% year-over-year, and several other tracked assignees show zero filings in the latest period. This reads as a maturing, consolidated field rather than an expanding one.
Verification and analysis classes trail sterilization claims by a wide margin
A61L claims cover more than two-thirds of the 691 records, while the classes tied to indicator and measurement science — C12Q, G01N and C12M — each sit well below that, in the 12-21% range. That gap suggests core disinfection method claims are more heavily staked out than the supporting verification instrumentation.
Eureka can read the same corpus for gaps instead of for coverage: under-claimed branches adjacent to hydrogen peroxide room decontamination, with the prior art for and against each one.
Assignee landscape and where the gaps sit
The ranked list covers 100 companies counted by records; it is the whole ranking the data returns, not a curated top tier. Ownership past the leading names thins quickly into single- and few-filing entrants.
One assignee holds nearly a quarter of the corpus alone
The leading assignee's 159 records dwarf the fifth-place count of 35 and the tenth-place count of 16, illustrating how steeply the distribution drops off after the top few names.
Co-assignment is limited and clusters around named inventors
Only 10 co-assignee pairs appear in the dataset, with the strongest links pairing one major sterilization assignee with individual named inventors at a strength of 3 shared records each — a pattern of in-house inventor teams rather than cross-company joint filing.
Latest-year filings have gone quiet across most tracked names
Several of the assignees tracked for recent-year momentum show zero filings in the latest year, and the two still filing report only a single record each, one of them down 50% year-over-year. Combined with the 2021-2024 volume drop, this points to a field where the core claim positions were staked earlier in the period.
| Assignee | Recent year | YoY |
|---|---|---|
| Steris Corporation | 1 | -50% |
| ASP Global Manufacturing GmbH | 1 | — |
| Steris Corporation | 0 | — |
| Regeneron Pharmaceuticals Inc | 0 | -100% |
| Stryker Corporation | 0 | — |
| Ethicon Inc | 0 | — |
| Abbott Diabetes Care Inc | 0 | — |
| Sterifre Medical Inc | 0 | — |
Where to take this analysis
The aggregate view answers who and how much; the next layer of work is claim-level.
Map claim scope against the leader's portfolio
With one assignee holding 159 of 691 records, a claim-chart comparison against that portfolio specifically will tell you more than a broad freedom-to-operate sweep across all 100 ranked assignees.
Explore assignee portfolios in EurekaCheck the under-claimed branches for a filing window
Aeration-time sensing and operator-exclusion interlocks show thinner claim density than core A61L sterilization art — worth a focused novelty search before drafting.
Run a white space search in EurekaTrack whether 2025-2026 filings revive or confirm the pullback
The 2021-2024 decline is real, but publication lag means the last one to two years are still incomplete. Revisit the trend once those years mature before concluding the field has permanently slowed.
Set up filing alerts in EurekaFrequently asked questions
One assignee leads the ranked list with 159 of the 691 records in scope, well ahead of the fifth-place holder at 35 and tenth place at 16. The top 5 assignees combined account for 64.4% of all records, and the top 10 account for 77.9%. This means a competitive or freedom-to-operate review should prioritise the leading few names before spreading attention across the full 100-company ranking.
Filing peaked in 2020 at 60 records and then declined, falling from 49 in 2021 to 15 in 2024 — a 69% drop over that three-year span. Because patent publication typically lags filing by around 18 months, the 2025 and 2026 counts in any trend chart are still incomplete and should not yet be read as continuing the decline. Based on the complete years through 2024, however, filing momentum has clearly cooled from its 2020 high.
US20080206801A1, assigned to American Sterilizer Company, claims a biological indicator design: a carrier with a recess that restricts movement of an inoculum, where the inoculum's suspension medium includes a wetting agent to reduce surface tension so it plates out evenly rather than stacking. The microorganisms are prepared by removing extraneous material and sonicating to break up agglomerations before deposit. Anyone designing a biological indicator carrier or inoculum-preparation process for vaporous decontamination validation should check this filing's specific claim language on the recess geometry and wetting-agent formulation.
A61L, covering sterilising and disinfecting, appears on 68.0% of the 691 records in scope, making it by far the densest class in this corpus. C12Q (measuring and testing involving enzymes or DNA, relevant to biological indicators) and G01N (material analysis and testing) follow at 21.3% and 19.5% respectively. Records commonly carry more than one class, so a robust claim strategy usually needs to consider both the sterilization mechanism art in A61L and the verification-and-measurement art in C12Q and G01N together.
Filing density is heaviest in core sterilization method claims under A61L, while supporting areas like aeration-time sensing, operator-exclusion interlock systems, and room-sealing integrity verification show comparatively thinner coverage relative to that core. These are process-control and safety-validation layers rather than the chemistry itself, which is why they trail the dominant class. A first claim in one of these branches would likely focus on a specific sensor, interlock mechanism, or validation protocol rather than the hydrogen peroxide delivery method, since that core territory is already densely held by the leading assignees.
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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.