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Serving leading biopharmaceutical companies globally:

Johnson and Johnson
Chinese Patent Office
US Department of Justice
Daiichi Sankyo

Generated: November 24, 2017

DrugPatentWatch Database Preview

Details for Patent: 4,588,580

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Summary for Patent: 4,588,580

Title: Transdermal administration of fentanyl and device therefor
Abstract:Transdermal delivery systems for delivery of fentanyl and its analgetically effective derivatives for extended periods of time are disclosed which deliver the base form of the drug at a rate of from 0.5 to 10 .mu.g/cm.sup.2 /hr for a substantial portion of their useful life. The systems can be from 5-100 cm.sup.2 in releasing surface and preferably employ an in-line amine resistant adhesive. Preferred rate controlled systems utilize an aqueous ethanolic gel to minimize drug content.
Inventor(s): Gale; Robert M. (Los Altos, CA), Goetz; Victor (Palo Alto, CA), Lee; Eun S. (Redwood City, CA), Taskovich; Lina T. (Palo Alto, CA), Yum; Su I. (Los Altos, CA)
Assignee: Alza Corporation (Palo Alto, CA)
Application Number:06/633,762
Patent Claim Types:
see list of patent claims
Process; Delivery; Device;

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International Patent Family for Patent: 4,588,580

Country Document Number Estimated Expiration Supplementary Protection Certificate SPC Country SPC Expiration
Australia4452785► Subscribe
Australia565177► Subscribe
Belgium902884► Subscribe
Belgium905568► Subscribe
Canada1245983► Subscribe
Switzerland665351► Subscribe
Cyprus1560► Subscribe
Germany3526339► Subscribe
Germany3546830► Subscribe
Germany3546869► 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:

Fish and Richardson
Chinese Patent Office
Boehringer Ingelheim
Argus Health

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