US8975270 — Injectable flowable composition comprising buprenorphine
Method of Use · Assigned to RB Pharmaceuticals Ltd · Expires 2031-09-05 · 5y remaining
What this patent protects
This patent protects a sustained release delivery system for buprenorphine that includes a flowable composition and a solid implant for releasing the drug over a period of 14 days to 3 months.
USPTO Abstract
The present invention is directed to a buprenorphine sustained release delivery system capable of delivering buprenorphine, a metabolite, or a prodrug thereof for a duration of about 14 days to about 3 months. The buprenorphine sustained release delivery system includes a flowable composition and a solid implant for the sustained release of buprenorphine, a metabolite, or a prodrug thereof. The implant is produced from the flowable composition. The buprenorphine sustained release delivery system provides in situ 1-month and 3-month release profiles characterized by an exceptionally high bioavailability and minimal risk of permanent tissue damage and typically no risk of muscle necrosis.
Drugs covered by this patent
- Subutex (BUPRENORPHINE) · Purdue Pharma Lp
FDA Patent Use Codes
When a patent is method-of-use, FDA lists it once per applicable indication ("U-code"). Each U-code carves out a specific therapeutic use that generic filers must either license or design around.
| Code | Description | Drug |
|---|---|---|
U-2206 |
— | Subutex |
U-2206 |
— | Subutex |
Bibliographic data sourced from FDA Orange Book + USPTO public records. Plain-English summary generated by AI grounded in source text. Patent term extensions (PTR, SPC, pediatric) may shift the effective expiry. Not legal advice.
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