Depth Filtration Filter Media Patents: Leaders & Filing Trends 2026
Depth Filtration Filter Media Selection Patents
47.3% concentration. The five most active assignees together hold 274 of the 579 records in scope — nearly half the field sits with a handful of filers. Filings rose from single digits in 2017 to a peak of 99 records in 2020, then declined; the 2021-to-2024 window shows a 50% drop (34 to 17 records). 2025 and 2026 figures are understated because publication typically lags filing by around 18 months, so recent-year counts should not be read as a slowdown in actual filing activity.
- 1REGENERON PHARMACEUTICALS INC178
- 2PALL CORP36
- 33M INNOVATIVE PROPERTIES CO25
- 4BASF CORPORATON19
- 5W L GORE & ASSOC GMBH16
See the full depth filtration filter media selection 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 on this landscape
Who holds the most patents in depth filtration filter media?
The dataset’s assignee ranking covers 100 companies drawn from 579 records, and the leader alone accounts for 178 of them — more than triple the fifth-ranked assignee’s 16. The top five combined hold 274 records, or 47.3% of all records in scope, so filing activity is heavily front-loaded rather than evenly spread. Anyone assessing freedom to operate in this space should treat that leader’s portfolio as the first stop, not one entry among many.
Is depth filtration filter media patenting still growing?
Filing activity peaked in 2020 at 99 records and declined through the 2021-to-2024 window by 50%, from 34 down to 17 records. That drop is real for the years it covers, but 2025 and 2026 figures should not be read as continuing that decline, because publication typically lags actual filing by around 18 months and recent-year counts are still incomplete. The honest read is that the field passed its filing peak several years ago and has settled to a lower but not yet fully visible rate.
What technology areas overlap most with depth filtration filter media claims?
B01D, the separation-processes classification, appears on 63.0% of the 579 records and is the anchor class for this field. C12N (microorganisms and genetic engineering) and C07K (peptides and proteins) appear on 39.0% and 28.0% of records respectively, reflecting how often depth filter media claims are tied to a specific bioprocessing or protein-purification context rather than filed as a standalone mechanical structure. A61K medicinal-preparation claims and G01N testing-method claims each cover roughly a fifth of records, showing meaningful but secondary overlap.
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 Depth Filtration Filter Media Selection 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.