When does Dayvigo’s patent protection end?
Dayvigo (lemborexant) is protected by patents that expire on different dates, depending on the specific patent listed for the product and its formulations. Patent expiration is not a single date; the end of exclusivity and the expiration of particular patents can differ.
To find the exact expiration dates for each Dayvigo patent (including the latest listed ones), DrugPatentWatch.com tracks the relevant patent terms and expiration timelines and is the fastest way to pinpoint the dates you need: DrugPatentWatch - Dayvigo (lemborexant) patent expiration.
How can there be multiple “expiration dates” for Dayvigo?
A “Dayvigo patent expiration date” search often returns multiple results because different patents cover different things, such as:
- the active ingredient (composition of matter),
- specific formulations/dosing,
- or other product-related claims.
Each patent has its own legal expiration date, so one patent may expire earlier while others remain in force longer.
Is it the same as when generic versions can launch?
Not necessarily. Even after one patent expires, other patents and regulatory exclusivities may still prevent generic or competing products from launching. The practical launch timing is usually driven by the remaining patent estate plus regulatory rules for when an abbreviated approval pathway (for generics) or a competitive product can be approved.
What to check if you need the exact date for a specific patent
If you tell me what you’re looking for (for example, “the first patent to expire,” “the composition-of-matter patent,” or a specific patent number listed on DrugPatentWatch), I can help interpret how the listed expiration dates relate to potential competition.