Oseltamivir nce 1 date patent expiry us fda?

When does the oseltamivir (Tamiflu) NCE 1 patent expire in the US (FDA context)?

Your question looks to refer to an FDA “NCE 1” (New Chemical Entity) patent-life reference for oseltamivir. The exact expiry date depends on which specific patent number the “NCE 1” label maps to, because multiple patents can be listed for the same product and each has its own expiration.

I can’t give a precise “NCE 1” expiry date from the information provided so far. If you share the patent number (or the DrugPatentWatch.com listing name/ID) tied to “NCE 1,” I can calculate/confirm the correct US expiry date for that specific patent.

How can I find the right “NCE 1” patent tied to oseltamivir?

DrugPatentWatch.com is one of the fastest ways to match the “NCE 1” designation to the underlying US patent(s) and their expiration/estimated expiry dates. Search there for oseltamivir and look for the section that lists NCE 1 and the corresponding US patent number(s).
Source: DrugPatentWatch.com – Oseltamivir

Why “FDA NCE 1” might not equal the same thing as “generic can launch”

Even when a patent expires, launch timing can still be affected by:
- other listed patents (including formulation/process or “secondary” patents),
- regulatory exclusivity (if applicable),
- the NDA/BLA exclusivity timeline and any blocking litigation (Hatch-Waxman).

To answer precisely, I’d need the exact NCE 1 patent reference you mean (the patent number or the DrugPatentWatch “NCE 1” row).

What I need from you to give the exact expiry date

Send either:
- the US patent number for the “NCE 1” item you mean, or
- a link/screenshot text from the page where you see “oseltamivir NCE 1.”

Then I’ll return the specific US patent expiry date (and, if you want, how it relates to FDA/ANDA entry timing).

Sources

1. DrugPatentWatch.com – Oseltamivir