Virus-Retentive Filtration Patents: Leaders & Trends 2026
Virus-Retentive Filtration Patents: Who Holds the Continuous-Processing Claims
Fully concentrated field. The two ranked assignees account for all 12 records in scope — no long tail of smaller filers appears in this dataset. Filings rose from 3 in 2021 to 5 in 2024, a +67% increase over that span, with 2024 the peak year recorded so far. Because publication lags filing by roughly 18 months, the 2025-2026 counts shown are still filling in and should not be read as a slowdown.
- 1再生元制药公司58.3%
- 2安进公司41.7%
See the full viral clearance processing — virus-retentive filtration patent landscape 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
Frequently asked questions
What is virus-retentive filtration in biopharmaceutical manufacturing?
Virus-retentive filtration (VRF) is a physical size-exclusion step used in biologics manufacturing to remove viral particles from a protein sample without inactivating the product. It typically sits inline with chromatography steps such as hydrophobic interaction chromatography (HIC) in a continuous purification train. In this dataset, every one of the 12 records in scope carries a B01D separation-process classification, confirming that filtration is the consistent technical core of the field regardless of which other purification steps a given patent also claims.
Who are the leading patent holders in virus-retentive filtration?
The assignee ranking for this dataset returns only two ranked companies, and together they account for all 12 records in scope — a fully concentrated field with no long tail of smaller filers showing up in the ranking. That said, this is a narrow, targeted search string covering a specific technical combination, not the entire viral clearance field, so the concentration reflects this dataset’s scope rather than the industry as a whole. Readers should treat the ranked leader’s position as a signal of where claim density is heaviest, not as a complete competitive map.
How fast is patent filing growing in this area?
Filings grew from 3 in 2021 to 5 in 2024, a +67% increase over that three-year span, with 2024 standing as the peak year recorded so far. Filing counts for 2025 and into 2026 are lower, but that is expected: publication typically lags actual filing by around 18 months, so the most recent one to two years in any patent trend are understated until later filings work through examination and publication. The honest read is growth through 2024 with an as-yet-unresolved tail, not a decline.
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 Viral Clearance Processing — Virus-Retentive Filtration Patent Landscape 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.