Vibramycin generics — when can they launch?
Vibramycin (doxycycline) · Generic (originally Pfizer) · 1 active US patent · 0 expired
Where Vibramycin sits in the generic timeline
Imminent generic cliff: earliest active US patent for Vibramycin 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.
- Method of Use — 1 patent
FDA U-codes carved out by Vibramycin 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-1063 | (no description) |
Sample patent estate
Showing 1 of 1 active US patents. View full estate on the Vibramycin drug page →
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This patent protects once-daily formulations of tetracyclines, such as doxycycline, for treating various diseases including periodontal disease and acne.USPTO title: Once daily formulations of tetracyclines
Sources
- FDA Orange Book — patents listed against Vibramycin (NDA filed 1967)
- Vibramycin drug profile — full patent estate, indications, clinical trials, pricing
- Generic (originally Pfizer) patent portfolio
- Patent cliff 2027 — 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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