Protein Chromatography Column Packing Patents: Who Holds the Ground
25.7% of all 1,876 records sit with just five assignees — concentrated enough that a newcomer's freedom-to-operate review starts with a short list, not a long one. Filings ran from 87 in 2017 to a peak of 106 in 2020, then eased through the complete-year window to 41 in 2024 — a -35% move from 2021's 63 filings. The final years in the chart (2025-2026) are still filling in under publication lag and should not be read as a continued decline.
- 1REGENERON PHARMACEUTICALS INC10.3%
- 2F HOFFMANN LA ROCHE & CO AG4.6%
- 3UCB BIOPHARMA SPRL3.8%
- 4EMD MILLIPORE CORP3.7%
- 5GE HEALTHCARE BIO SCIENCES AB3.4%
See the full protein chromatography column packing 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 protein chromatography column packing?
The dataset's leading assignee holds 193 records, well ahead of fifth place at 63 and tenth place at 45. The top five assignees combined hold 25.7% of all 1,876 records in scope, and the top ten reach 39.4%. That said, the ranking runs 100 assignees deep, so beyond the leaders there is a long tail of companies with only a handful of filings each, and the leader's edge is not evenly spread across every sub-claim area like bed uniformity or flow distribution.
Is patent filing in protein chromatography column packing still growing?
No — filings peaked at 106 in 2020 and, over the last span that can be treated as complete under publication lag, fell from 63 in 2021 to 41 in 2024, a -35% change. The most recent one to two years in any chart understate true activity because publication lags filing by roughly 18 months, so those years should not be read as confirming a continued decline. Taken together, the pattern is a real cooling from an early-2020s peak rather than an ongoing collapse.
Which patent classes matter most for protein chromatography column packing claims?
C07K (peptides and proteins) appears in 72.9% of the 1,876 records and B01D (separation processes) in 46.6%, making these the two dominant frames for claims in this space. G01N (material analysis and testing) at 29.5% and C12N (microorganisms and genetic engineering) at 26.5% show up as recurring adjacencies, usually tied to upstream biology or in-process testing steps. Because a single record can carry several IPC codes, these percentages overlap and should not be added together to estimate total coverage.
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 Protein Chromatography Column Packing 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.