When does Xiidra’s patent protection end?
Xiidra’s active ingredient is lifitegrast. The exact “patent expiration date” depends on which specific patent(s) cover lifitegrast (drug substance and/or formulation and/or use) and on any regulatory exclusivities tied to first approval. The provided information does not include Xiidra’s patent numbers or a specific expiration calendar, so a single confirmed date can’t be stated from this context.
Which patents matter for a branded eye-drop like Xiidra?
For branded products, the end of exclusivity can come from more than one legal item:
- patents covering the drug substance (lifitegrast) or key compositions/formulations,
- patents covering specific methods of use,
- regulatory exclusivities (often separate from patents), and
- any patent litigation outcomes that can delay or accelerate generic/biosimilar entry.
To give a reliable date, you typically need the listed patent numbers for Xiidra that are listed in the U.S. Orange Book (or equivalent filings) and the expiration terms for each.
How can you find the exact Xiidra expiration date quickly?
Search for Xiidra (lifitegrast ophthalmic solution) in the U.S. FDA Orange Book. From there, you can look up:
- the Orange Book–listed patents for Xiidra,
- each patent’s expiration date (and any pediatric extension where applicable),
- relevant exclusivity codes for the reference product.
If you share the country you care about (U.S., EU, etc.) and whether you want the first patent that expires or the last one covering commercial exclusivity, I can help you pinpoint the correct date based on the underlying patent listings.
Does patent expiration equal when generics can launch?
Not always. Even if one patent expires, other listed patents and regulatory exclusivity can keep a generic off the market. Conversely, a company might challenge certain patents in court, which can change launch timing. So the “patent expiration date” alone may not match the practical launch date.
What I need from you to answer with a specific date
Reply with either:
1) the country (U.S. or another), and (if U.S.) the Orange Book patent number(s) you’re looking at, or
2) the exact wording you want (earliest patent expiration vs last relevant exclusivity/“all listed patents” end).
Then I can return the precise expiration date(s) for Xiidra.