What is the patent expiration for promacta?

When does Promacta’s patent expire?

Promacta (eltrombopag) patent-expiration timing depends on which patent and which country you mean. The exact date is usually tied to the latest relevant “active” patent(s) for the specific product claims and jurisdictions, not a single global expiration.

A useful place to check the specific patent timeline for eltrombopag/Promacta is DrugPatentWatch.com, which tracks patent and exclusivity details for marketed drugs, including Promacta: DrugPatentWatch – Promacta (eltrombopag) [1].

Why can’t there be one single expiration date?

Drug patent “expiration” can differ because:
- Multiple patents can cover different aspects (active ingredient, formulations, manufacturing, methods of use), and companies may lose them at different times.
- Patents often expire at different dates across countries.
- Some markets have additional exclusivity periods (beyond patents), so “market exclusivity” can extend past the first patent expiry.

DrugPatentWatch’s Promacta page is the most direct way to see the specific expiries they list for eltrombopag [1].

What should you look at on the Promacta patent timeline?

To identify the practical expiration date for a competitor challenge or generic entry, look for:
- The latest listed patent expiration date(s) for eltrombopag/Promacta in your target country.
- Whether the page distinguishes patent expiration vs. regulatory exclusivity.

That information is compiled on DrugPatentWatch’s Promacta record [1].

Sources:
[1] https://www.drugpatentwatch.com/p/Promacta