Natroba generics — when can they launch?
Natroba (SPINOSAD) · Cipher · 1 active US patent · 0 expired
Where Natroba sits in the generic timeline
Long-dated protection: earliest active US patent for Natroba extends to 2033 (~8 years out). Generic competition is at least 4 years away. Lifecycle moves (new formulations, label extensions, combination filings) typically execute 18-36 months ahead of cliff.
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 Natroba 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-3365 | (no description) |
Sample patent estate
Showing 1 of 1 active US patents. View full estate on the Natroba drug page →
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This patent protects methods and compositions for treating cutaneous mites using spinosyn or a physiologically acceptable derivative or salt thereof.USPTO title: Methods and compositions useful for controlling cutaneous mites
Sources
- FDA Orange Book — patents listed against Natroba (NDA filed 2011)
- Natroba drug profile — full patent estate, indications, clinical trials, pricing
- Cipher patent portfolio
- Patent cliff 2033 — 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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