Dupilumab patent expiry date?

Patents for dupilumab aren’t governed by a single expiry date. There are multiple patent families (composition-of-matter for the antibody, various use patents, formulation/process patents, etc.) plus regulatory data exclusivity, and expiry dates vary by country.

If you tell me the jurisdiction(s) you care about (e.g., United States, European Union, United Kingdom, Japan) and whether you want:
- the main composition-of-matter patent, or
- any use/formulation/manufacturing patents,
- plus whether you want to include regulatory data exclusivity,

I can look up the current expiry dates and summarize them for you. I can also guide you on how to check these yourself in public databases (Google Patents, Espacenet, USPTO Patent Center, EMA/European Patent Register).