Emtriva generics — when can they launch?
Emtriva (EMTRICITABINE) · Gilead Sciences · 13 active US patents · 0 expired
Where Emtriva sits in the generic timeline
Mid-term cliff: earliest active US patent for Emtriva expires in 2032 (~6 years). Generic developers typically begin ANDA bioequivalence studies 3-4 years ahead of this date. Paragraph IV filings + Hatch-Waxman 30-month stays may shift the effective entry by another 18-36 months.
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.
- Method of Use — 6 patents
- Other — 6 patents
- Formulation — 1 patent
FDA U-codes carved out by Emtriva patents
Method-of-use patents are listed against specific FDA Patent Use Codes ("U-codes") representing carved-out indications. Generics can launch with a label that omits these uses.
| U-code | Description |
|---|---|
U-1663 | (no description) |
U-257 | (no description) |
U-1259 | (no description) |
Sample patent estate
Showing 6 of 13 active US patents. View full estate on the Emtriva drug page →
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This patent protects a hemifumarate form of tenofovir alafenamide, used in antiviral therapy for conditions such as HIV and HBV.USPTO title: Tenofovir alafenamide hemifumarate
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This patent protects a hemifumarate form of tenofovir alafenamide, used in antiviral therapy for conditions such as HIV and HBV.USPTO title: Tenofovir alafenamide hemifumarate
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This patent protects a hemifumarate form of tenofovir alafenamide, used in antiviral therapy for conditions such as HIV and HBV.USPTO title: Tenofovir alafenamide hemifumarate
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This patent protects a hemifumarate form of tenofovir alafenamide, used in antiviral therapy for conditions such as HIV and HBV.USPTO title: Tenofovir alafenamide hemifumarate
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This patent protects a hemifumarate form of tenofovir alafenamide, used in antiviral therapy for conditions such as HIV and HBV.USPTO title: Tenofovir alafenamide hemifumarate
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This patent protects a hemifumarate form of tenofovir alafenamide, used in antiviral therapy for conditions such as HIV and HBV.USPTO title: Tenofovir alafenamide hemifumarate
Sources
- FDA Orange Book — patents listed against Emtriva (NDA filed 2003)
- Emtriva drug profile — full patent estate, indications, clinical trials, pricing
- Gilead Sciences patent portfolio
- Patent cliff 2032 — every drug losing US exclusivity that year
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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