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Serving leading biopharmaceutical companies globally:

Cantor Fitzgerald
Federal Trade Commission
Boehringer Ingelheim
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Generated: December 14, 2017

DrugPatentWatch Database Preview

Details for Patent: 4,837,111

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Summary for Patent: 4,837,111

Title: Dosage form for dispensing drug for human therapy
Abstract:An osmotic dosage system is disclosed for delivering the therapeutically beneficial drug doxazosin to an environment of use over time.
Inventor(s): Deters; Joseph C. (Mountain View, CA), Wong; Patrick S. L. (Hayward, CA), Barclay; Brian L. (Sunnyvale, CA), Theeuwes; Felix (Los Altos, CA), Swanson; David R. (Palo Alto, CA)
Assignee: ALZA Corporation (Palo Alto, CA)
Application Number:07/173,524
Patent Claim Types:
see list of patent claims
Device; Composition; Delivery;

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International Patent Family for Patent: 4,837,111

Country Document Number Estimated Expiration Supplementary Protection Certificate SPC Country SPC Expiration
Austria96308► Subscribe
Canada1315687► Subscribe
Germany68910159► Subscribe
Denmark135389► Subscribe
Denmark175637► Subscribe
European Patent Office0334465► Subscribe
Spain2045400► Subscribe
Hong Kong1003980► Subscribe
Ireland62131► Subscribe
Ireland890142► 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:

Johnson and Johnson
Farmers Insurance
Boehringer Ingelheim

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