Tangential Flow Filtration Patents: Top Companies & Trends 2026
Tangential Flow Filtration Fouling Control Patents
67.9% of all 196 records sit with just five assignees — filing here is heavily concentrated at the top, not spread across a broad field. Annual filings rose from 9 in 2017 to a peak of 17 in 2023, with 2021-to-2024 growth of +1000% (1 filing to 11). 2025 and 2026 figures are still incomplete because publication lags filing by roughly 18 months, so the apparent tail-off should not be read as a slowdown.
- 1GENENTECH INC40
- 2CHUGAI PHARMA CO LTD40
- 3DANISCO US INC21
- 4EMD MILLIPORE CORP20
- 5REGENERON PHARMACEUTICALS INC12
See the full tangential flow filtration fouling control analysis in Eureka
- The complete ranking, not just the top five
- Every IPC branch with its share of the corpus
- The most-cited records, and where claim space is still thin
Common questions about this landscape
Who holds the most patents in tangential flow filtration fouling control?
One assignee leads with 40 of the 196 records in this dataset, well ahead of the fifth-ranked filer at 12. The top 5 assignees combined hold 67.9% of all records, and the top 10 combined hold 87.8%, so filing activity is concentrated in a small group rather than spread evenly across the 64 ranked companies. This concentration matters for freedom-to-operate checks: a new filer’s claims are more likely to overlap with one of these leaders than with the long tail.
Is patent filing in TFF fouling control growing or slowing down?
Filings grew sharply from 1 in 2021 to 11 in 2024, a +1000% increase, with a peak of 17 filings in 2023. Counts for 2025 and 2026 look lower, but that reflects the roughly 18-month lag between filing and publication rather than an actual slowdown. Treat 2024 as the most recent year with a reliable count, and expect 2025-2026 figures to rise as more records are published.
What patent classes cover tangential flow filtration fouling control?
B01D, covering separation processes including filtration, appears in 93.4% of the 196 records, which is expected given the search scope. C07K (peptides and proteins) appears in 36.7% and A61K (medicinal preparations) in 17.9%, reflecting how much of this filing activity ties to biologics purification. Water treatment (C02F, 9.2%) and centrifuges (B04B, 5.6%) are present but comparatively thin, since a single record can carry multiple classes these shares do not sum to 100%.
Disclaimer. This analysis is based on Patsnap Eureka data drawn from a limited snapshot of global patent records and is provided for general information and reference only. Patent data carries inherent limitations — recent filings are under-counted because of publication lag, counts may be on a record or family basis, classification and applicant-name data may contain errors or duplicates, and the underlying search query defines the scope shown — so the analysis may be incomplete or inaccurate and may not reflect the full technology landscape.
Nothing here is an exhaustive prior-art, novelty, freedom-to-operate or validity search, nor does it constitute legal, financial or professional advice, and it should not be relied upon as such. Verify independently and review with qualified patent and legal professionals before acting on it.
Method: Filing trend and technology composition. Derived from a Patsnap search on Tangential Flow Filtration Fouling Control covering 2015–2026, data cut-off 2026-07-31. Counts reflect published records only and shift as new filings publish. Every share divides by all records in scope. Data: Patsnap Eureka. See the full landscape report.