Anion-Exchange Membrane Adsorber Patents: Who Leads, Gaps 2026
Anion-Exchange Membrane Adsorber Patents: Mapping the Filers and the Gaps
One assignee holds the field. of the 14 ranked companies, the leader accounts for 75 of the tracked records, while fifth and tenth place each sit at just 2 — a steep drop-off, not a gradual one. Filings peaked at 43 in 2017 and the tracked growth window shows 2021 (2 records) falling to 2024 (0), a -100% change over that three-year span. Treat 2025 and 2026 as incomplete rather than as evidence of a further decline, since publication lag means recent filings have not all surfaced yet.
- 1UCB BIOPHARMA SPRL75
- 2GRIFOLS THERAPEUTICS INC8
- 3GRIFOLS THERAPEUTICS LLC3
- 4CARONNA ANTHONY2
- 5YUSB BIOFARMA SRL2
See the full membrane chromatography — anion-exchange membrane adsorbers 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
Common questions on anion-exchange membrane adsorber patents
What is an anion-exchange membrane adsorber used for in biopharmaceutical processing?
It is a flow-through purification step that replaces resin-packed columns with a functionalised membrane for removing negatively charged impurities such as host-cell DNA, endotoxin and certain process-related proteins from a biologic drug product. Because the membrane format has a much shorter diffusion path than packed resin beads, it can run at higher volumetric flow rates during polishing steps. In this dataset, every record carries a C07K peptide/protein classification, confirming these filings are consistently framed around protein purification methods rather than filed as standalone separation hardware.
Who holds the most patents in anion-exchange membrane adsorber technology?
The ranking in this dataset is led by one assignee with 75 of the tracked records, far ahead of the rest of the 14 companies ranked — fifth and tenth place both sit at just 2 records each. This is a steep concentration rather than a gradual decline, meaning most competitive activity in this niche is effectively defined by one company’s filing history. The remaining ranked names include several individual inventors rather than corporate portfolios.
Is filing activity in anion-exchange membrane adsorbers slowing down?
The tracked growth figure shows a fall from 2 records in 2021 to 0 in 2024, a -100% change, with 2017 as the historical peak at 43 records. However, publication typically lags filing by around 18 months, so 2025 and 2026 records are still incomplete in this dataset and should not be read as confirmation that filing has stopped. The 2024 figure is the most recent one that can be treated as a complete year.
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 Membrane Chromatography — Anion-Exchange Membrane Adsorbers 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.