US Patent
US9108975 — Crystal of 6,7-unsaturated-7-carbamoyl morphinan derivative and method for producing the same
Composition of Matter · Assigned to Shionogi and Co Ltd · Expires 2031-11-11 · 5y remaining
Vulnerability score
10/100
Ironclad — strong claim type, well-established, deep family
What this patent protects
This patent protects novel crystalline forms of a compound represented by formula (IA), useful for preparing medicines, and methods for producing them.
USPTO Abstract
Stable crystalline forms of a compound represented by the formula (IA): an acid addition salt, and/or a solvate thereof are provided by the present invention. Said crystalline forms are extremely useful as materials for preparing medicines. Novel processes for preparing 6,7-unsaturated-7-carbamoyl morphinan derivatives are also provided by the present invention.
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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