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Generated: December 11, 2017

DrugPatentWatch Database Preview

Details for Patent: 5,931,809

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Summary for Patent: 5,931,809

Title: Epidural administration of therapeutic compounds with sustained rate of release
Abstract:A drug delivery system provides sustained-release delivery of therapeutic biologically active compounds administered epidurally. In the preferred embodiment the biologically active compound is an opioid, which is encapsulated within the non-concentric internal aqueous chambers or bilayers of multivesicular liposomes. The opioid is released over an extended period of time when the liposomes are introduced epidurally as a single dose for sustained analgesia.
Inventor(s): Gruber; Andres (San Diego, CA), Murdande; Sharad B. (San Diego, CA), Kim; Taehee (San Diego, CA), Kim; Sinil (Solana Beach, CA)
Assignee: Depotech Corporation (San Diego, CA)
Application Number:08/502,569
Patent Claim Types:
see list of patent claims
Use; Formulation; Dosage form;

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International Patent Family for Patent: 5,931,809

Country Document Number Estimated Expiration Supplementary Protection Certificate SPC Country SPC Expiration
Canada2226870► Subscribe
China1195286► Subscribe
China1085944► Subscribe
European Patent Office0839027► Subscribe
European Patent Office2036542► Subscribe
Hong Kong1014881► Subscribe
JapanH11508900► Subscribe
Japan4592119► Subscribe
Japan2008143911► Subscribe
Brazil9609717► Subscribe
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The estimated expiration dates shown above are derived by simply adding 20 years to the priority date.
Due to the complexity of determining patent expirations even in a single country, compounded by the diversity of global patent laws, it is advisable to have patent counsel verify freedom to operate.

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Serving leading biopharmaceutical companies globally:

Farmers Insurance
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US Army

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