Generic entry timeline

FOSTEMSAVIR TROMETHAMINE generics — when can they launch?

FOSTEMSAVIR TROMETHAMINE (FOSTEMSAVIR TROMETHAMINE) · · 2 active US patents · 0 expired

Earliest patent expiry
2027-11-19
2 years remaining
Full patent estate to
2029-07-13
complete protection through 2029
FDA approval
2020

Where FOSTEMSAVIR TROMETHAMINE sits in the generic timeline

Imminent generic cliff: earliest active US patent for FOSTEMSAVIR TROMETHAMINE expires in 2027 (~2 years from today). ANDA filers are likely already preparing Paragraph IV certifications. Expect first-filer 180-day exclusivity competition imminently.

Under US Hatch-Waxman, a generic enters via an ANDA (Abbreviated New Drug Application) and may file with one of four Paragraph IV certifications attacking the brand's listed patents. If the brand sues within 45 days, a 30-month FDA approval stay is triggered. First Para IV filer typically gets 180-day market exclusivity.

Patent estate by type — active patents

Method-of-use patents only carve out specific indications; generics can launch with a "skinny label" omitting those uses. Composition-of-matter patents block the molecule itself.

  • Composition of Matter — 1 patent
  • Formulation — 1 patent

Sample patent estate

Showing 2 of 2 active US patents. View full estate on the FOSTEMSAVIR TROMETHAMINE drug page →

  • US7745625 Composition of Matter · expires 2027-11-19
    This patent protects prodrug compounds and their use in treating HIV infection, as well as intermediate compounds useful in making them.
    USPTO title: Prodrugs of piperazine and substituted piperidine antiviral agents
  • US8168615 Formulation · expires 2029-07-13
    This patent protects prodrug compounds and their use in treating HIV infection, as well as intermediate compounds useful in making these prodrugs.
    USPTO title: Prodrugs of piperazine and substituted piperidine antiviral agents

Sources

Patent term extensions (PTR, pediatric exclusivity), Hatch-Waxman 30-month stays, and FDA regulatory exclusivity (NCE/ODE/PED) may shift the effective generic entry date. Not legal advice.

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