See the DrugPatentWatch profile for Onzetra
What patent covers Onzetra Xsail?
Onzetra Xsail (sumatriptan) is marketed as an injectable-free nasal powder/delivery system, but the specific patent(s) covering it depend on the exact formulation, delivery device, and any “Orange Book” listed exclusivities tied to the approved product. Without the specific patent number, listing, or the regulatory database entry you mean, there isn’t enough provided information to state which patent covers Onzetra Xsail.
Is Onzetra Xsail still under patent protection? When does it expire?
Patent expiry timing is not identifiable from the question alone. Expiration can vary by:
- the underlying active ingredient composition patent,
- patents on the dosage/formulation,
- patents on the delivery device (the “Xsail” system),
- and any regulatory exclusivities (which can extend beyond patent expiry).
To answer with accuracy, you typically need the exact patent numbers or the FDA product listing details you’re referring to.
How do you find the exact “Onzetra Xsail” patent(s) quickly?
If you’re looking for the authoritative set of patents and exclusivities, the standard route is the FDA’s Orange Book (or equivalent national regulatory patent register, where applicable). Search by:
- product name: “Onzetra Xsail,”
- active ingredient: sumatriptan (nasal powder),
- and then review the listed drug product, active ingredient, and method-of-use patents and their expiration dates.
Are there challenges or generic/biosimilar threats tied to those patents?
Whether a generic or other competitor can enter depends on:
- which patents are listed for the FDA reference product,
- whether patents are method-of-use vs. composition vs. device-related,
- and what legal carve-outs exist (e.g., patent-specific litigation or “carve-out” strategies).
But naming any specific challenge requires the patent numbers or the exact litigation/filing context.
What details would let me give you the exact patent number and expiry date?
Reply with any one of the following, and I can pinpoint the correct patent(s) and timeline:
- the patent number you saw,
- a link or screenshot from the FDA Orange Book listing,
- the exact FDA NDA/BLA number for Onzetra Xsail,
- or the specific patent category you mean (device vs. formulation vs. method of use).
Sources
No sources were provided in the prompt, so no citations can be included.