Details for Patent: 6,958,326
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Summary for Patent: 6,958,326
Title: | Cyclodextrin-drospirenone inclusion complexes |
Abstract: | Pharmaceutical compositions comprising low doses of sensitive complexes between an estrogen and a cyclodextrin are provided with improved stability. In specific embodiments the composition comprises a complex between ethinyl estradiol and .beta.-cyclodextrin in a granulate preparation and in yet another embodiment the composition comprises a limited amount of polyvinylpyrrolidone since this excipient was found to degrade ethinyl estradiol. Furthermore, a method for improving the stability of an estrogen in a composition and for manufacturing such a stable composition is provided. Essentially, the granulate preparation are manufactured under careful control of the relative humidity. |
Inventor(s): | Backensfeld; Thomas (Berlin, DE), Heil; Wolfgang (Berlin, DE), Lipp; Ralph (Berlin, DE) |
Assignee: | Schering AG (Berlin, DE) |
Application Number: | 10/022,845 |
Patent Litigation and PTAB cases: | See patent lawsuits and PTAB cases for patent 6,958,326 |
Patent Claim Types: see list of patent claims | Composition; Use; Formulation; Process; |
Drugs Protected by US Patent 6,958,326
Applicant | Tradename | Generic Name | Dosage | NDA | Approval Date | TE | Type | RLD | RS | Patent No. | Patent Expiration | Product | Substance | Delist Req. | Patented / Exclusive Use | Submissiondate |
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>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: 6,958,326
Foriegn Application Priority Data | ||
Foreign Country | Foreign Patent Number | Foreign Patent Date |
00610135 | Dec 20, 2000 |
International Family Members for US Patent 6,958,326
Country | Patent Number | Estimated Expiration | Supplementary Protection Certificate | SPC Country | SPC Expiration |
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Argentina | 032205 | ⤷ Try a Trial | |||
Austria | 311204 | ⤷ Try a Trial | |||
Australia | 1941802 | ⤷ Try a Trial | |||
>Country | >Patent Number | >Estimated Expiration | >Supplementary Protection Certificate | >SPC Country | >SPC Expiration |