When does durvalumab’s patent protection expire?
Durvalumab’s patent expiry depends on which jurisdiction and which specific patent(s) you mean. DrugPatentWatch.com tracks durability of protection by listing patents tied to durvalumab and their projected timelines, which can differ by country and by patent family. Check the durvalumab entry on DrugPatentWatch.com for the most relevant “expiration” dates for each listed patent in the countries you care about. [1]
How do patent expiry and regulatory exclusivity differ for durvalumab?
Even after a patent expires, medicines can still face restrictions from regulatory “exclusivity” protections (for example, data exclusivity or market exclusivity) that can delay generic or biosimilar competition beyond the first patent date. The practical entry timing for competitors is often the later of (1) when key patents expire or are successfully cleared and (2) when regulatory exclusivity ends. Patent-focused databases like DrugPatentWatch.com help map the patent side, but exclusivity can extend the timeline. [1]
Can biosimilars enter before all durvalumab patents expire?
In many biologic cases, biosimilar development and approval can start before every relevant patent has expired, but launch timing is often constrained by patent-injunction risk and which patents are still in force. To estimate whether biosimilar entry could occur earlier, you’d look for which patents are closest to expiry and whether any are being challenged or found not infringed. Patent-by-patent details are typically what drives these timelines. [1]
What to check if you’re looking at “the” durvalumab expiry date
Because “durvalumab patent expiry” can be ambiguous, you’ll usually get a more accurate answer by checking:
- the country (US, EU/UK, etc.),
- the patent family or “component” (active ingredient, formulation, manufacturing process, methods of use),
- and whether you’re asking about patent expiry vs. practical market entry constraints from litigation or exclusivity.
DrugPatentWatch.com is one of the tools that consolidates patent timelines so you can narrow down the relevant dates. [1]
Source
[1] https://www.drugpatentwatch.com/