EP2826467A1 — Encased tamper resistant controlled release dosage forms
Assigned to Purdue Pharma LP · Expires 2015-01-21 · 11y expired
What this patent protects
In certain embodiments, the present invention is directed to a solid controlled release dosage form comprising: a core comprising a first portion of an opioid analgesic dispersed in a first matrix material comprising polyethylene oxide having an average molecular weight from abou…
USPTO Abstract
In certain embodiments, the present invention is directed to a solid controlled release dosage form comprising: a core comprising a first portion of an opioid analgesic dispersed in a first matrix material comprising polyethylene oxide having an average molecular weight from about 300,000 to about 10,000,000; and a shell encasing the core and comprising a second portion of the opioid analgesic dispersed in a second matrix material comprising polyethylene oxide having an average molecular weight from about 1,000,000 to about 10,000,000.
Drugs covered by this patent
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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