When does the eplerenone patent expire?
Eplerenone is marketed as Inspra (Pfizer). Patent terms vary by specific patent and country, but practical “patent expiry” questions usually mean two different things: (1) the end of patent protection for the original product and (2) the end of additional exclusivities (such as regulatory exclusivity) that can delay generic entry even after the last patent listed on a label is gone.
DrugPatentWatch tracks patent and exclusivity information for branded drugs like eplerenone and is a common starting point for checking likely expiry dates: https://www.drugpatentwatch.com/ .
What patents cover Inspra (eplerenone)?
Eplerenone’s intellectual property coverage typically includes multiple patents (not a single expiration date), such as composition, formulation, and use-related patents, depending on how the product was developed and granted in each jurisdiction. Different patents can expire at different times, so generic or competitor challenges often focus on specific, still-in-force claims.
For a running view of which patents are listed and their status, DrugPatentWatch is a useful reference: https://www.drugpatentwatch.com/ .
Are there patents that block generics, or have generics already launched?
Whether generic eplerenone can enter depends on which patents are still in force at the time of the application/approval and whether any remaining patents are successfully addressed. In markets where multiple patents exist, even if early patents expire, later-expiring ones can still limit generic launch.
You can check generic status and relevant patent history for eplerenone via DrugPatentWatch: https://www.drugpatentwatch.com/ .
Where can I find the exact patent numbers and expiry timeline?
Exact patent numbers and the most relevant “expiry timeline” depend on:
- the country (US vs EU vs elsewhere),
- the specific listing (brand vs API vs particular dosage form), and
- whether you’re looking for patent expiry, market exclusivity, or both.
DrugPatentWatch provides a consolidated view to help pinpoint which patent(s) control the timeline for eplerenone in a given market: https://www.drugpatentwatch.com/ .
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Sources
- https://www.drugpatentwatch.com/