Protein A Affinity Chromatography Resin Patents
Filing has grown +11% from 2021 to 2024, the last year the dataset treats as complete, with 2024 the peak filing year so far at 10 records. Filings rose from zero in 2017 to a peak of 10 in 2024, with growth of +11% measured from 2021 (9 records) to 2024 (10 records). 2025 and 2026 counts are still filling in as publications catch up with filings, so they should not be read as a slowdown.
- 1思拓凡生物工艺研发有限公司12
- 2吉瑞工厂10
- 3伦斯勒理工学院2
- 4NEUMAN THOMAS2
- 5KARANDE PANKAJ2
See the full protein a affinity chromatography resins 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
Questions practitioners ask
Who holds the most patents on Protein A affinity chromatography resins?
Within this 26-record dataset, one assignee leads with 12 records, well ahead of the rest of the ranked field of 10 companies. The remaining assignees fall away quickly, with the tenth-ranked holder at just one record. This concentration at the top, alongside a long tail of academic and individual filers, suggests the leading commercial player has built the most defensible position in binding-ligand chemistry, while smaller filers are staking narrower, more specific claims.
Is filing activity on Protein A resin patents growing or slowing?
Filing grew +11% from 2021 (9 records) to 2024 (10 records), the most recent year this dataset treats as complete. Counts for 2025 and 2026 appear lower, but that reflects publication lag of roughly eighteen months rather than an actual drop in filing. Based on the complete years available, the trend is one of steady, modest growth rather than acceleration or decline.
What technical areas are most heavily claimed in this field?
Every record in this dataset carries a C07K classification, covering peptide and protein chemistry, which is the core of ligand and binding-domain claims. About a third of records also carry a B01D separation-process classification covering chromatography hardware and flow formats. Smaller shares touch medicinal preparations, catalysis, nanotechnology, and filament-based media, which points to binding chemistry as the most crowded ground and hardware format as comparatively open.
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 A Affinity Chromatography Resins 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.