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Serving leading biopharmaceutical companies globally:

Johnson and Johnson

Generated: December 16, 2017

DrugPatentWatch Database Preview

Details for Patent: 4,871,543

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Summary for Patent: 4,871,543

Title: Intravaginal devices
Abstract:The invention concerns an intravaginal device comprising a combination of 17 .beta.-estradiol and a supporting matrix for treating hypoestrogenic women. The device releases continuously 17 .beta.-estradiol at a rate of about 0.5 to about 25 .mu.g/24 h. The invention also comprises a method of preparing the device and a method of treating hypoestrogenic women by using the device.
Inventor(s): Lindskog; Inga M. (Helsingborg, SE), Sjogren; Bengt C. H. (Viken, SE), Andersson; Sven-Borje (Od.ang.kra, SE)
Assignee: Aktiebolaget Leo (Helsingborg, SE)
Application Number:07/060,833
Patent Claim Types:
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Device; Use;

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Foreign Priority and PCT Information for Patent: 4,871,543

Foriegn Application Priority Data
Foreign Country Foreign Patent Number Foreign Patent Date
Sweden8602666Jun 16, 1986

International Patent Family for Patent: 4,871,543

Country Document Number Estimated Expiration Supplementary Protection Certificate SPC Country SPC Expiration
Austria68097► Subscribe
Australia599988► Subscribe
Australia7422287► Subscribe
Canada1314482► Subscribe
China1034391► Subscribe
China87104229► Subscribe
Germany3773557► Subscribe
Denmark175529► Subscribe
Denmark303487► Subscribe
European Patent Office0253109► 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:

Johnson and Johnson
Argus Health

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