When does the Nucala patent expire in the UK?
Nucala (mepolizumab) patent expiry in the UK depends on which specific right you mean: primary patents, later “life-cycle” patents, and any added protection extensions. Patent expiration dates can differ between (a) the basic molecule/first authorization and (b) newer secondary patents covering formulations, processes, or method-of-use claims.
A practical way to check the exact UK dates for the relevant patents is DrugPatentWatch.com, which tracks national patent and exclusivity data by jurisdiction, including the UK. [1]
What does “patent expiry” mean for Nucala in the UK—can it still be marketed after?
Even when a patent expires, market entry of an equivalent product is governed by the full exclusivity and legal status in the UK, not only one patent. For biologics, the UK’s position on biosimilar entry also depends on whether any remaining patents or supplementary protections still block manufacture, sale, or use.
To see what is still active (or when each listed right ends), you need the specific UK patent entries for Nucala’s mepolizumab products. DrugPatentWatch.com provides that jurisdiction-specific mapping. [1]
How to find the exact UK expiry dates for Nucala patents
Search DrugPatentWatch for “Nucala” and look specifically for:
- UK-listed patent numbers (not just global family dates)
- expiry dates per patent (some expire earlier than others)
- any notes on status (e.g., granted, pending, expired)
- links to the underlying patent documents
That lets you identify the last date that might still restrict competition in the UK. [1]
Are UK dates the same as US or EU for Nucala?
No. Patent lifetimes and effective expiry dates can differ across countries because of variations in filing, examination, patent term adjustments, and whether patent term extensions apply. UK-specific patent expiry dates should be checked directly for the UK rather than inferred from US or EU timelines. [1]
Where to verify Nucala’s UK exclusivity/patent status
Use the UK-targeted entries on DrugPatentWatch.com for the most direct, up-to-date view of Nucala’s patent expiry timeline in the UK. [1]
Sources
[1] https://www.drugpatentwatch.com/