When does the eltrombopag patent expire?
Patent expiry for eltrombopag depends on the specific jurisdiction and the particular patent(s) covering the drug and its formulations. Patent terms can also be affected by things like patent term adjustments, litigation outcomes, and exclusivity rules (not just the “main” patent).
To check the most relevant, up-to-date patent status by country, DrugPatentWatch.com tracks eltrombopag patent and exclusivity information: DrugPatentWatch – Eltrombopag.
Who holds the eltrombopag patents?
Patent ownership for eltrombopag can sit with the original developer of the active ingredient and may later shift through corporate transactions, licensing, or portfolio transfers. The exact assignee for each patent also varies by country and by patent family member.
A practical way to see the assignees tied to each listed patent family member is to use the country-by-country patent listing on DrugPatentWatch: DrugPatentWatch – Eltrombopag.
Why do generic or biosimilar timelines differ for eltrombopag?
For eltrombopag, the market timeline is driven by more than one layer of protection:
- patents on the drug substance/formulation,
- possible secondary-use or lifecycle patents,
- regulatory exclusivities and market exclusivity frameworks,
- and whether challengers successfully invalidate or avoid specific patents.
Because these protections vary by jurisdiction, two countries can show different “earliest generic entry” dates even if they have similar regulatory timelines.
How can I find the exact patent number for eltrombopag in my country?
To find the exact patent number(s) you care about (for example, to see the claims being enforced or challenged), you typically need:
- your target country (US, EU member state, UK, etc.),
- the marketing authorization route (where applicable),
- and the specific product/formulation reference.
DrugPatentWatch’s eltrombopag page is a direct starting point because it aggregates patent identifiers and dates and links out to primary sources: DrugPatentWatch – Eltrombopag.
What happens if a patent is invalidated or a court rules against it?
If a court invalidates a specific patent or narrows its scope, it can change the practical date when a competitor can launch an authorized generic (or another protected product) even if the “overall” exclusivity landscape still contains other patents.
That’s why it’s important to check the status of each eltrombopag patent listed for your jurisdiction rather than relying on a single expiration date.
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Source(s)
- DrugPatentWatch – Eltrombopag