Depth Filtration Broth Clarification Patents: Who Leads 2026
Depth Filtration Broth Clarification Patents: Leaders, Trends and Where the Gaps Sit
87.4% concentration. Five assignees hold 118 of the 135 records in scope, leaving a long tail of single- and double-filing entrants. Filings rose from a single record in 2017 to a peak of 12 in 2023, then declined through 2021's count of 7 to 2024's count of 1 — an 86% drop over that three-year span. 2025 and 2026 figures are still incomplete due to normal publication lag and should not yet be read as a continued decline.
- 1INGURAN LLC74
- 2AMGEN INC21
- 3REGENERON PHARMACEUTICALS INC11
- 4EMD MILLIPORE CORP6
- 5COOK GENERAL BIOTECHNOLOGY LLC6
See the full depth filtration broth clarification 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 depth filtration broth clarification?
One assignee leads the ranking with 74 of the 135 records in scope, a substantial margin ahead of the rest of the field. The top five assignees combined hold 118 records, or 87.4% of all records in scope, so the field is heavily concentrated at the top. Anyone entering this space should review that leading portfolio first, since it covers the largest share of prior art by a wide margin.
Is depth filtration broth clarification patent activity growing or shrinking?
Filings peaked in 2023 at 12 in a given year, then fell from 7 in 2021 to 1 in 2024, an 86% decline over that span. However, publication lags filing by roughly 18 months, so 2025 and 2026 figures are still incomplete and should not yet be read as a continued decline. A clearer picture of the recent trend will only emerge once those years finish publishing.
What technology areas dominate the claims in this space?
C12N, covering microorganisms and genetic engineering, appears in 90.4% of the 135 records in scope, making it by far the most common classification. G01N, C12M and A61D each appear in over half of records, while B01D, the classification tied most directly to filtration hardware, appears in only 14.1%. This pattern shows that clarification is usually claimed as a step within a larger biological production process rather than as a standalone filtration invention.
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 Broth Clarification 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.