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Serving leading biopharmaceutical companies globally:

Harvard Business School
Express Scripts
Boehringer Ingelheim
Fish and Richardson
Queensland Health
Farmers Insurance

Generated: December 14, 2017

DrugPatentWatch Database Preview

Details for Patent: RE33994

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Summary for Patent: RE33994

Title: Pharmaceutical delivery system
Abstract:A composition for use in an aqueous environment which .[.comprise.]. .Iadd.comprises .Iaddend.a formulation containing a water-soluble pharmaceutically beneficial agent, a water-insoluble, water-permeable film coating surrounding the formulation, and particulate, water-soluble, pore-forming material dispersed within the film coating. The questions raised in reexamination request No. 90/001,344, filed Oct. 5, 1987, have been considered and the results thereof are reflected in this reissue patent which constitutes the reexamination certificate required by 35 U.S.C. 307 as provided in 37 CFR 1.570(e).
Inventor(s): Baker; Richard W. (Palo Alto, CA), Brooke; James W. (Sisters, OR)
Assignee: Burroughs Wellcome Co. (Research Triangle Park, NC)
Application Number:07/390,518
Patent Claim Types:
see list of patent claims
Composition; Dosage form;

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Foreign Priority and PCT Information for Patent: RE33994

Foriegn Application Priority Data
Foreign Country Foreign Patent Number Foreign Patent Date
United Kingdom8322007Aug 16, 1983

International Patent Family for Patent: RE33994

Country Document Number Estimated Expiration Supplementary Protection Certificate SPC Country SPC Expiration
Canada1239034► Subscribe
Canada1321754► Subscribe
Germany10075031► Subscribe
Germany3485618► Subscribe
Germany3486409► Subscribe
European Patent Office0171457► Subscribe
European Patent Office0467488► SubscribeSPC/GB00/019United Kingdom► Subscribe
European Patent Office0467488► Subscribe2000C/021Belgium► Subscribe
United Kingdom8322006► Subscribe
United Kingdom8322007► 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:

Express Scripts
Harvard Business School
Daiichi Sankyo
Farmers Insurance
Cantor Fitzgerald

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