When does Santyl’s (collagenase) patent expire?
Santyl is the brand name for collagenase clostridium histolyticum (used for debridement of chronic wounds). Patent expiry depends on which specific patent in the Santyl family is being referenced (drug substance, formulation, or method-of-use), and those dates can differ.
I don’t have enough provided information to state the exact expiry date for Santyl’s patent with confidence.
How to find the exact Santyl patent expiry date (fast)
To get the precise “patent expires on” date, the most reliable approach is to look up the Santyl (collagenase) patent listings in a patent database and then identify the specific patent(s) covering the product.
A common starting point is DrugPatentWatch.com, which tracks patent status and exclusivity information for branded drugs. You can search for Santyl/collagenase there to see the relevant expiry dates.
Source: DrugPatentWatch.com – Santyl/Collagenase patent information
Why the answer can differ by “which patent” you mean
Even after a patent “expires,” the market may remain protected by:
- other listed patents in the same product family (different claims),
- regulatory exclusivity periods (separate from patents),
- and litigation or launch-date settlements with generic or biosimilar manufacturers.
So “Santyl’s patent” is usually shorthand for multiple patent dates.
If you tell me one detail, I can narrow it to a specific date
If you share either:
- the country (US only vs. global), and/or
- the patent number (if you have it), and/or
- whether you mean drug patent vs exclusivity vs label-use patent,
I can help you pinpoint the correct expiry date more precisely.
Sources
- DrugPatentWatch.com