Photobioreactor Light Management Patents: Leaders & Trends 2026
Filing growth compares 2021 (3 records) with 2024 (11) — 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 240 records in scope (CR5), not by the ranked leaders only.
What this landscape covers
This dataset tracks patent activity where photobioreactor design intersects with light management for algal cultivation: enclosure geometry, light source placement and control, aeration and flow paths, and the sensing or control logic that governs light exposure inside the reactor. It draws on 240 published records spanning 2015 through the 2026 cut-off, ranked across 100 assignees in the underlying data endpoint. The scope was defined by claims and title language referencing photobioreactor light control directly, or light management combined with photobioreactor apparatus — so the corpus centres on engineering claims rather than the biology of the algae itself.
Publication lags filing by roughly 18 months, so the most recent one to two years in any trend understate real filing activity. Patent families, not raw document counts, are the fairer unit for comparing assignees, since families neutralise aggressive continuation practice and multi-jurisdiction filing strategies.
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Filing trends and technology composition
Two views of the same 240-record corpus: how filing volume has moved year over year, and which IPC subclasses carry the claim weight. Both use the full record count as their denominator.
Filing trend: a sharp post-2021 acceleration
Annual filings peaked so far at 16 in 2020, then dipped before rebuilding: 2021 recorded 3, climbing to 11 by 2024, a +267% rise over that three-year span. 2017 opened at 9 and 2026 shows 7, but 2025 and 2026 are still filling in as later publications post, so the apparent tail-off there is a lag artefact, not a real slowdown.
Technology composition: hardware claims dominate
C12M (bioreactors and enzyme apparatus) appears in 70.4% of the 240 records, making reactor hardware the single densest claim zone. C12N (microorganisms and genetic engineering) follows at 29.2%, with C12P fermentation processes, A01G horticulture, B01D separation, F21V lighting components, C02F water treatment and A01N biocides each covering a smaller slice. Because records can carry multiple IPC codes, these shares sum past 100% and should be read against the 240-record total, not against each other.
Shares are the percentage of the 240 records in scope. A patent can carry several IPC classes, so the shares add up to more than 100%.
Go deeper on Algal Biofuels: Photobioreactor Light Management Patent Landscape with Eureka
This page is one run against one query. Ask Eureka your own question about algal biofuels: photobioreactor light management patent landscape and every answer comes back with the patent numbers behind it.
Try EurekaRepresentative and most-cited filings
Photobioreactor system and method — NEXGEN ALGAE, LLC (2016-05-12)
The filing describes a photobioreactor system built from a plurality of interconnected photobioreactor units, each with an enclosure for receiving, incubating and agitating algae growth medium. Aeration apertures deliver air bubbles to agitate the medium, fed by a connected aeration apparatus, while the units are arranged to allow gravity-driven flow of medium between outlet ports. One or more light sources are positioned to illuminate the growth medium within the enclosures.Abstract text taken directly from the published filing; claim scope should be verified against the granted claims, not the abstract alone.
| # | Publication no. | Patent title | Citations |
|---|---|---|---|
| 1 | US20150143806A1 | Quintuple-Effect Generation Multi-Cycle Hybrid Renewable Energy System with Integrated Energy Provisioning, S… | 268 |
| 2 | US20050260553A1 | Photobioreactor and process for biomass production and mitigation of pollutants in flue gases | 255 |
| 3 | US20050064577A1 | Hydrogen production with photosynthetic organisms and from biomass derived therefrom | 233 |
| 4 | US20090047722A1 | Systems, devices, and methods for biomass production | 156 |
| 5 | US20080293132A1 | High Density Bioreactor System, Devices, and Methods | 148 |
| 6 | US6416993B1 | Method for treating a waste stream using photosynthetic microorganisms | 103 |
| 7 | WO2007070452A1 | Systems, devices, and methods for biomass production | 90 |
| 8 | WO2003094598A1 | Photobioreactor and process for biomass production and mitigation of pollutants in FLUE gases | 85 |
| 9 | US20110183368A1 | Method and apparatus for using light emitting diodes in a greenhouse setting | 71 |
| 10 | US20110070632A1 | Photo bioreactor and cultivation system for improved productivity of photoautotrophic cell cultures | 70 |
Citation counts favour older filings simply because they have had longer to accumulate citations inside the searched corpus — treat them as a signal of influence on later filers, not as a measure of current commercial importance.
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Four readings of the same dataset, aimed at where to file, who to watch, and what is still open.
The front of the field is tight, the rest is long-tail
The leading assignee holds 17 records and the top 5 combined take 25.0% of all 240 records in scope; the top 10 extend that to 41.7%. Beyond that the ranking thins into single- and double-digit filers, meaning most of the 100 ranked assignees hold small, defensible niches rather than broad blocking positions.
Filing activity is rebuilding, not cooling
After a 2020 peak of 16 filings, activity dropped to 3 in 2021 before climbing back to 11 by 2024 — a +267% rise over that span. 2025 and 2026 figures will keep revising upward as publications catch up with filing dates, so the recent apparent dip should not be read as a slowdown.
Reactor hardware, not biology, is where claims concentrate
C12M bioreactor and enzyme apparatus claims appear in 70.4% of the 240 records, well ahead of C12N microorganism claims at 29.2%. That skew shows the crowded ground is enclosure and apparatus design; the underlying biological or genetic engineering angle is claimed far less often within this corpus.
The US and PCT routes carry most of the filing volume
United States receiving-office filings lead at 65, with WIPO PCT filings at 36 and EPO filings at 34 close behind; India, Australia and Canada each host smaller but still active filing volumes. That spread suggests applicants are seeking protection across multiple major markets rather than filing narrowly in one jurisdiction.
Eureka can read the same corpus for gaps instead of for coverage: under-claimed branches adjacent to algal biofuels: photobioreactor light management patent landscape, with the prior art for and against each one.
Where to take this analysis
The dataset points to a field with a concentrated front and open apparatus-adjacent ground. These next steps help turn that into a filing or freedom-to-operate decision.
Map claim scope against the top-10 assignees
With 41.7% of the 240 records held by just 10 assignees, a claim-by-claim comparison against that group will show which apparatus configurations are already blocked and which light-control logic remains open.
Explore assignee claims in EurekaTrack the 2021–2024 filing acceleration by applicant
The +267% rise in filings from 2021 to 2024 did not come from one source alone; breaking it down by assignee shows whether new entrants or incumbents are driving the rebuild.
Run a filing-trend breakdown in EurekaCheck the F21V and C02F adjacencies for white space
Lighting device components (7.5%) and water treatment (7.1%) show up far less often than core bioreactor claims, which may indicate under-claimed integration points worth a closer read.
Search adjacent IPC classes in EurekaCommon questions on this landscape
The assignee ranking behind this dataset covers 100 companies and research entities, with the single leader holding 17 of the 240 records in scope. The top 5 assignees combined account for 25.0% of all records, and the top 10 extend that to 41.7%, which means roughly six in ten records are spread across a long tail of smaller filers. This pattern is typical of an engineering-heavy niche: a handful of specialists hold meaningful positions, but no single player controls the field outright.
Filings rebuilt sharply after a low point, rising from 3 in 2021 to 11 in 2024, a +267% increase over that three-year span, following an earlier peak of 16 filings in 2020. The apparent lower counts in 2025 and 2026 are not evidence of a slowdown; publication typically lags filing by around 18 months, so the most recent one to two years in any patent trend always understate true activity until later data catches up. Based on the complete years available, the trend through 2024 points upward.
Bioreactor and enzyme apparatus claims, classified under C12M, appear in 70.4% of the 240 records in this corpus, making reactor hardware and enclosure design the single most claimed area. Microorganism and genetic engineering claims (C12N) follow at 29.2%, with fermentation processes, horticulture, separation, lighting components, water treatment and biocide-related claims each covering smaller shares. Because a single record can carry several IPC codes, these percentages add up to more than 100% and should each be read against the full 240-record total rather than against one another.
US20160130546A1, assigned to NEXGEN ALGAE, LLC and published in 2016, describes a photobioreactor system built from multiple interconnected reactor units, each with aeration apertures for agitating algae growth medium and light sources positioned to illuminate that medium, with gravity-driven flow linking the units. Its practical reach depends on the specific claim language around the aeration-and-light arrangement and the gravity-flow interconnection between units, not on the abstract alone. Anyone designing a multi-unit photobioreactor with similar aeration and inter-unit flow should review the granted claims directly rather than relying on the published abstract.
The IPC breakdown shows several branches with comparatively low claim density relative to the core C12M apparatus class: F21V lighting device components sit at 7.5% of records and C02F water and wastewater treatment at 7.1%, both well below the 70.4% carried by core bioreactor apparatus claims. That gap suggests the specific integration of lighting hardware and water-treatment functions into photobioreactor systems is less thoroughly claimed than the reactor apparatus itself, which is worth a closer freedom-to-operate read before filing in those adjacencies.
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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.