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Last Updated: December 9, 2019

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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 Litigation and PTAB cases: See patent lawsuits and PTAB cases for patent RE33994
Patent Claim Types:
see list of patent claims
Composition; Dosage form;

Drugs Protected by US Patent RE33994

Applicant Tradename Generic Name Dosage NDA Approval Date TE Type RLD RS Patent No. Patent Expiration Product Substance Delist Req. Patented / Exclusive Use Submissiondate
>Applicant >Tradename >Generic Name >Dosage >NDA >Approval Date >TE >Type >RLD >RS >Patent No. >Patent Expiration >Product >Substance >Delist Req. >Patented / Exclusive Use >Submissiondate

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 Family Members for US Patent RE33994

Country Patent Number Estimated Expiration Supplementary Protection Certificate SPC Country SPC Expiration
Canada 1239034   Start Trial
Canada 1321754   Start Trial
Germany 10075031   Start Trial
Germany 3485618   Start Trial
Germany 3486409   Start Trial
European Patent Office 0171457   Start Trial
>Country >Patent Number >Estimated Expiration >Supplementary Protection Certificate >SPC Country >SPC Expiration

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