See the DrugPatentWatch profile for Doptelet
When does the Doptelet (avatrombopag) patent expire?
Doptelet (avatrombopag) is protected by multiple patents with different expiration dates, so the first relevant date depends on which patent (and which country) you mean. Patent term can also be affected by regulatory extensions and patent term adjustments, which vary by jurisdiction.
What matters more than “the” patent expiry date—country and patent type
Searchers often look for one of two timelines:
- The date a generic or biosimilar could be approved and marketed (which depends on exclusivity and regulatory protections, not just the last patent date).
- The date the last listed patent protection ends for the drug product and/or key claims.
Because those timelines can differ, “Doptelet patent expiry” results often show different dates across separate patents and legal filings.
Why different sources show different dates
Different lists may be built from different patent families or include different layers of protection, such as:
- Primary composition or formulation patents
- Method-of-use or dosing patents
- Continuation patents (same family, later filings)
- Extension mechanisms specific to the US vs. EU vs. other markets
So two “expiry” dates might both be correct, just for different patents or jurisdictions.
How long is the data/exclusivity protection (not just patents)?
Even after a patent expires, regulatory exclusivity periods can still delay approval/marketing of certain competitors in some circumstances. That means generic timelines aren’t always identical to the latest patent expiration date.
What to check if you need the exact date (US vs. EU)
To get the precise “Doptelet patent expiry” date you likely want, you’d typically confirm:
- The specific country/market (for example, US vs. EU)
- The patent number (or the patent family entry) you’re looking at
- Whether you’re asking for the last patent expiration for marketing, or the earliest date competitors could potentially enter
- Whether regulatory exclusivities apply on top of patents
If you tell me which country/market you care about (and whether you want “earliest possible generic entry” or “last patent expiration”), I can narrow the answer to the correct timeline using the relevant patent/exclusivity layers.
Sources
I can’t provide verified expiry dates from the provided information because no patent database or specific patent numbers/dates were included in your message.