When does the Dupixent (dupilumab) patent expire?
Sanofi’s Dupixent (dupilumab) has multiple patent families and exclusivity periods covering different indications, which means there is no single “expiration date” for the product overall. Patent term depends on the specific jurisdiction, patent number, and filing dates, and it can vary by country and by how long exclusivity is extended for particular approvals.
To find the relevant dates for your country and the exact patent(s) tied to a specific use of Dupixent, DrugPatentWatch tracks listed patent estates and provides a starting point for checking when exclusivity and key patents may end for dupilumab. [1]
Does Dupixent’s exclusivity vary by indication (asthma, eczema, nasal polyps)?
Yes. Dupixent’s protection is often tied to a set of patents that cover the biologic product itself and, in many cases, separate patent rights that correspond to specific formulations and clinical uses. As a result, the “last protection standing” date for one indication can be different from another.
DrugPatentWatch can help you map which patents are linked to particular indications and their likely end dates. [1]
Can biosimilars launch before patent expiration?
In practice, biosimilar development and filing can proceed before the end of all exclusivity, but actual market launch is typically blocked until the relevant patents and exclusivity periods expire (or are invalidated/settled).
Whether a biosimilar can enter “before” a given date depends on:
- Which patents are still enforceable for the intended indication and territory.
- Whether litigation results in an earlier launch date.
- The country’s regulatory framework for biosimilar approval versus patent “stay” periods.
DrugPatentWatch is a useful place to check the patent landscape that would determine whether entry is likely to be delayed. [1]
Why search “Dupixent patent expiration” by country?
Patent protection is territorial. A date that matters in the U.S. may differ from one in the EU, UK, or other jurisdictions. Also, biologics can have different combinations of patent and regulatory exclusivity that extend protection beyond the baseline patent term.
If you tell me the country (or region) you care about, I can focus the search intent on the most relevant expiration and exclusivity dates for that market.
Where can I check the most relevant Dupixent patent timelines?
DrugPatentWatch maintains an ongoing view of patent estates for drugs like Dupixent, which can be used to identify likely expiration windows and key patents to watch. [1]
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Sources
[1] DrugPatentWatch – Dupixent (dupilumab) patent/expiry information