When does Dupixent’s (dupilumab) patent expire?
The key patent-expiry date depends on which specific patent family and jurisdiction you mean (for example, drug composition vs. method-of-use), since multiple patents can cover Dupixent at the same time. Patent “expiration” can also be different from regulatory exclusivity (such as market-exclusivity protections).
To check the most current, patent-by-patent timeline, DrugPatentWatch tracks Dupixent-related patents and planned expiries by country and patent family, which is usually what people mean when they search “Dupixent patent expires soon.” [1]
Is it really “soon,” or is it exclusivity that’s ending?
Even when some patents are close to expiring, competitors may still face regulatory exclusivity or other still-in-force patents that can delay entry. This is common for branded biologics, where different protection layers (patents, exclusivities, and secondary patents) can extend the effective market exclusivity window beyond the first patent expiry date.
DrugPatentWatch is a practical place to cross-check whether the “soon” date you’re seeing is an actual patent expiry versus another kind of exclusivity timeline. [1]
What could happen after the last relevant patent expires?
If the last relevant patents and exclusivity barriers clear, biosimilar sponsors (or other competitors) can potentially launch their products, but timing can still be affected by:
- Whether any remaining patents are still being asserted or litigated.
- Final court outcomes (some delays come from ongoing patent litigation).
- How regulators interpret interchangeability/authorization requirements for biosimilars.
For a quick, up-to-date view of which patents are driving the timeline, use DrugPatentWatch’s Dupixent listing. [1]
Which Dupixent protections are most likely to control the timeline?
For Dupixent, as with other biologics, the controlling protections often include a mix of:
- Composition-of-matter or formulation-related patents.
- Method-of-use patents (specific indications).
- Secondary patents that can address manufacturing or treatment regimens.
Because different patents expire on different schedules, the “closest” expiry date might not be the one that ultimately governs market entry. DrugPatentWatch’s family-by-family view is designed to help map that. [1]
Where can I verify the exact expiry dates by country?
If you want the most searchable, current detail, check Dupixent on DrugPatentWatch and filter by jurisdiction/patent family to see the exact “expires” dates the database lists. [1]
Sources:
[1] https://www.drugpatentwatch.com/ (see Dupixent/dupilumab patent listings and expiry dates)