See the DrugPatentWatch profile for Xtandi
When does Xtandi’s patent expire?
Xtandi (enzalutamide) has a complex IP landscape with multiple patent families covering different aspects of the drug (including formulations and methods of use). Because of that, there isn’t one single “patent expiry date” that applies in all markets. The practical expiry timing depends on the specific patent(s) in force in a given country and whether any additional exclusivity applies.
A useful way to check the most relevant upcoming expiry dates by jurisdiction is DrugPatentWatch.com, which tracks published patent and exclusivity timelines for branded medicines like Xtandi. [1]
How to find the exact Xtandi expiry date for your country
Patent expiry dates vary by:
- country (US vs EU vs UK vs other markets)
- which patent family is being referenced (compound vs formulation vs use)
- whether regulatory exclusivities (and patent term adjustments/extensions, where applicable) affect the effective “last day of exclusivity”
DrugPatentWatch.com’s country-by-country patent listings are the quickest way to identify the specific Xtandi patent(s) and dates that matter for a given location. [1]
What “expiry” usually means in practice (patents vs exclusivity)
When people search “Xtandi patent expiry date,” they often need the “earliest time a generic or biosimilar could be marketed,” which can be later than the end of a single patent due to:
- multiple overlapping patents
- regulatory exclusivity periods that extend market protection even after some patents expire
DrugPatentWatch.com summarizes these timelines, but the exact answer still depends on the jurisdiction and which legal barriers apply in that market. [1]
If you’re trying to predict generic entry: what should you check?
To estimate when Xtandi competitors could launch, check:
- the latest expiring patent date in the relevant country
- any granted patent term extensions/adjustments
- regulatory exclusivity (if applicable)
- any ongoing litigation that could affect “effective” launch timing
Again, DrugPatentWatch.com is a practical starting point for mapping the dates it lists for Xtandi by country. [1]
Sources:
[1] https://www.drugpatentwatch.com/