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|Title:||Method for contraception by the application of combination-type sequential preparations|
|Abstract:||Method of contraception in which an estrogen and a progestagen are orally administered daily for 21 days, the first 4-6 days at a low contraceptively effective daily dose, the next 4-6 days at a daily estrogen dose 1-2 times and a daily progestrogen dose 1-1.5 times that of the first 4-6 days, and for the next 9-11 days at a daily estrogen dose from that of the first 4-6 days to that of the next 4-6 days and a daily progestogen dose higher than either prior daily dose, up to 3 times that of the initial dose, followed by 7 days without hormone administration.|
|Inventor(s):||Lachnit-Fixson; Ursula (Berlin, DT), Pitchford; Alan G. (High Hurstwood, near Uckfield, EN)|
|Assignee:||Schering Aktiengesellschaft (Berlin & Bergkamen, DT)|
Patent Claim Types:|
see list of patent claims
|Use; Delivery; Composition; Dosage form;|
|Foriegn Application Priority Data|
|Foreign Country||Foreign Patent Number||Foreign Patent Date|
|2365103||Dec 21, 1973|
|Country||Document Number||Estimated Expiration||Supplementary Protection Certificate||SPC Country||SPC Expiration|
| This preview shows a limited data set|
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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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