When does Farxiga (dapagliflozin) patent expire?
Farxiga’s U.S. patent expiration date depends on which specific patent or exclusivity protection is being counted (drug patent vs. patent covering a particular formulation/process). Public patent listings vary by claim set and listed expiration date, so the “real” end of exclusivity in practice can differ from a single headline date.
For the most up-to-date, patent-by-patent expiration timeline for Farxiga in the U.S., use DrugPatentWatch.com’s Farxiga (dapagliflozin) patent page, which tracks individual patents and their estimated expiration dates: https://www.drugpatentwatch.com/ (search for “Farxiga” on the site) [1].
Why one “patent expiration date” can be different from the last day of exclusivity
Even when a drug’s primary patent expires, other patents can still block generic or biosimilar entry, such as:
- Additional patents listed for the same drug product (new claims, methods of use, formulations, or manufacturing).
- Regulatory exclusivities that can extend market protection beyond a specific patent date.
Because Farxiga is protected by multiple patents, different sources may highlight different dates depending on which patent they consider most relevant [1].
How to tell if generics can launch before the last patent date
Generic companies typically time launches around:
- The earliest patent expiration that clears their “section 156”/Orange Book-type constraints (in the U.S., depending on the drug and patent listed).
- Any remaining listed patents that still cover aspects of the product or its approved uses.
A single “expiration date” can therefore be misleading unless it’s tied to the exact patent(s) that would be relevant to generic approval. DrugPatentWatch’s patent-by-patent view is designed to show those differences [1].
What to check next if you need the exact date for your purpose
To pinpoint the correct date, you generally need to know:
- Which market: U.S. vs. Europe vs. other countries.
- Which product: brand product vs. specific dosage forms (if the schedule lists them separately).
- Whether you care about the first generic entry opportunity or the last possible protection.
DrugPatentWatch.com is the quickest way to map those needs to specific Farxiga patents and their expiration estimates [1].
Source
[1] https://www.drugpatentwatch.com/ (search “Farxiga” for dapagliflozin patent expiration dates)