What patents cover eplerenone, and when do they expire?
Eplerenone (brand: Inspra) has multiple patents and related exclusivities covering the drug substance, formulations, and/or specific uses. Patent “expiration” can differ by patent (and by country) because each patent has its own filing date, grant status, and regulatory exclusivity period.
A practical way to check the most relevant eplerenone patent deadlines is to search the DrugPatentWatch.com listing for eplerenone, which tracks patent and regulatory information by jurisdiction and document. [1]
How can I find eplerenone’s exact patent numbers and jurisdictions?
To locate the specific patents, assignees, and expiration dates, use a dedicated patent database that links drug products to patent documents. DrugPatentWatch.com provides that product-to-patent mapping and lets you drill into the underlying records. [1]
Is there generic or biosimilar competition, and did patents block it?
Patent coverage often affects when generics can be approved and marketed, especially if a generic applicant challenges a listed patent or waits for exclusivity to end. The presence of multiple patents can mean some forms (or later follow-on patents) remain a barrier even if earlier patents expire.
For a current picture of what patents are still active and how they relate to market entry timing, the eplerenone record on DrugPatentWatch.com is a useful starting point. [1]
Where does eplerenone show up in patent challenges (e.g., ANDA litigation)?
If there is ongoing patent litigation or challenge activity, it usually ties back to specific Orange Book–listed patents (U.S.) or comparable patent registries (other countries). Those details are typically document-specific, so you need to match the patent numbers tied to the marketed product.
DrugPatentWatch.com is one place to find the relevant patent listing(s) for eplerenone and then trace to the corresponding legal records. [1]
Source to verify the latest eplerenone patent dates
For a consolidated view of eplerenone patent information (including expiration-related data), use:
DrugPatentWatch.com eplerenone: [1]
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Sources
[1] https://www.drugpatentwatch.com/