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Serving leading biopharmaceutical companies globally:

Cantor Fitzgerald
Boehringer Ingelheim
Harvard Business School
Express Scripts
US Department of Justice
Johnson and Johnson
Argus Health

Generated: December 11, 2017

DrugPatentWatch Database Preview

Details for Patent: 4,765,989

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Summary for Patent: 4,765,989

Title: Osmotic device for administering certain drugs
Abstract:An osmotic system is disclosed comprising a wall comprising in at least a part of a semipermeable material that surrounds a compartment. The compartment contains an osmotic composition comprising a beneficial drug selected from the group consisting of nifedipine, prazosin and doxazosin, and a second and different osmotic composition. A passageway in the wall connects the first composition with the exterior of the system.
Inventor(s): Wong; Patrick S. L. (Hayward, CA), Barclay; Brian L. (Sunnyvale, CA), Deters; Joseph C. (Mt. View, CA), Theeuwes; Felix (Los Altos, CA)
Assignee: Alza Corporation (Palo Alto, CA)
Application Number:06/902,915
Patent Claim Types:
see list of patent claims
Dosage form; Device; Composition; Delivery; Use;

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International Patent Family for Patent: 4,765,989

Country Document Number Estimated Expiration Supplementary Protection Certificate SPC Country SPC Expiration
Austria394944► Subscribe
Austria397180► Subscribe
AustriaA150789► Subscribe
AustriaA88084► Subscribe
Australia2251183► Subscribe
Australia566110► Subscribe
Belgium898819► Subscribe
Belgium900817► Subscribe
Canada1222950► Subscribe
Switzerland669329► 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:

Cantor Fitzgerald
Johnson and Johnson
Fish and Richardson
Express Scripts

Drugs may be covered by multiple patents or regulatory protections. All trademarks and applicant names are the property of their respective owners or licensors. Although great care is taken in the proper and correct provision of this service, thinkBiotech LLC does not accept any responsibility for possible consequences of errors or omissions in the provided data. The data presented herein is for information purposes only. There is no warranty that the data contained herein is error free. thinkBiotech performs no independent verifification of facts as provided by public sources nor are attempts made to provide legal or investing advice. Any reliance on data provided herein is done solely at the discretion of the user. Users of this service are advised to seek professional advice and independent confirmation before considering acting on any of the provided information. thinkBiotech LLC reserves the right to amend, extend or withdraw any part or all of the offered service without notice.

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