See the DrugPatentWatch profile for cenobamate
When does cenobamate’s patent expire?
Cenobamate (brand name Xcopri) has multiple patents tied to different inventions (for example, drug substance, formulations, and method-of-use). Patent expiry therefore depends on which specific patent family and jurisdiction you mean. In the information provided here, no patent numbers, jurisdictions, or expiry dates are included, so a precise “the patent expires on X date” answer cannot be confirmed from the available data.
How can I find the exact cenobamate patent expiry date?
To get the correct expiry date, you generally need three inputs:
1) The country (US, EU, UK, etc.)
2) The patent family (drug substance vs. composition vs. method-of-use)
3) Whether you want the hard patent expiry date or exclusivity-related dates (which can extend beyond filing-based expiry).
Practically, you’d check:
- Patent databases for “cenobamate” / “Xcopri” and identify the relevant patent family members
- The listing of patents for each market (regulatory “patent linkage” systems, where applicable)
- Any added protection (for example, pediatric extensions or supplementary protection mechanisms in some jurisdictions)
Does exclusivity end when patents expire?
Not always. Even if a patent is set to expire, drug-market exclusivity can continue through other legal protections (timing varies by country). That can affect when generic or biosimilar competition can begin and when “skinny label” pathways or full substitution typically occur.
What might delay generic entry for cenobamate even after a filing-based expiry date?
Common reasons include:
- Remaining patents in the same family (different claim scopes can expire on different dates)
- Litigation stays (where generic challengers and the reference product company contest patent validity/infringement)
- Regulatory exclusivity rules that are independent of the main composition patent (jurisdiction-specific)
If you tell me your country, I can narrow it down
If you share the jurisdiction you care about (for example, US vs. EU/UK) and whether you mean “earliest possible generic entry” or “latest patent expiry,” I can structure the answer around the right patent set and explain how the relevant dates line up.
Sources
No sources were provided with the question, and no patent documents or expiry dates were included in the available information.