P0 · Patent assignees
Most active patent assignees
Pharmaceutical companies ranked by USPTO patent portfolio size and near-term expirations.
Quick answer
The most active pharmaceutical patent assignees in our USPTO index include Teva Pharma, Axsome Therapeutics, United Therapeutics Europe — ranked by total granted patents with 24-month expiration counts for patent-cliff planning.
Frequently asked questions
How are assignees ranked?
By count of published pharmaceutical patents (A61K/A61P) where the company matches USPTO assignee to our company directory.
Where do I see the full portfolio?
Each assignee links to a dedicated company patent hub with pagination, expiring filters, and drug cross-links.