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Serving leading biopharmaceutical companies globally:

Federal Trade Commission
Novartis
Healthtrust
Teva
Baxter
Fuji
Argus Health
Cerilliant
Harvard Business School
Merck

Generated: January 22, 2018

DrugPatentWatch Database Preview

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 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 Patent Submitted
Bayer Hlthcare BEYAZ drospirenone; ethinyl estradiol; levomefolate calcium TABLET;ORAL 022532-001 Sep 24, 2010 AB RX No No ➤ Subscribe ➤ Subscribe Y ➤ Subscribe
Bayer Hlthcare SAFYRAL drospirenone; ethinyl estradiol; levomefolate calcium TABLET;ORAL 022574-001 Dec 16, 2010 AB RX Yes Yes ➤ Subscribe ➤ Subscribe Y ➤ Subscribe
Bayer Hlthcare YAZ drospirenone; ethinyl estradiol TABLET;ORAL 021676-001 Mar 16, 2006 AB RX Yes Yes ➤ Subscribe ➤ Subscribe Y ➤ Subscribe
Applicant Tradename Generic Name Dosage NDA Approval Date TE Type RLD RS Patent No. Patent Expiration Product Substance Delist Req. Patented / Exclusive Use Patent Submitted

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Foreign Priority and PCT Information for Patent: 6,958,326

Foriegn Application Priority Data
Foreign Country Foreign Patent Number Foreign Patent Date
00610135Dec 20, 2000

Non-Orange Book US Patents Family Members for Patent 6,958,326

For Orange Book-listed patents (shown in the main table above) generic applications must certify that the listed patents are expired, invalid, or will not be infringed by generic entry.

The non-Orange Book patents listed below do not require formal certifications, so they do not automatically impede generic entry. Instead, they represent potential opportunities for branded firms to block generic entry through patent infringment challenges.

Patent No. Title Estimated Patent Expiration
7,163,931 Compositions of estrogen-cyclodextrin complexes ➤ Subscribe
7,569,557 Compositions of estrogen-cyclodextrin complexes ➤ Subscribe
Patent No. Title Estimated Patent Expiration

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International Patents Family Members for US Patent 6,958,326

Country Document Number Estimated Expiration Supplementary Protection Certificate SPC Country SPC Expiration
Argentina 032205 ➤ Subscribe
Austria 311204 ➤ Subscribe
Australia 1941802 ➤ Subscribe
Australia 2002219418 ➤ Subscribe
Australia 2006225232 ➤ Subscribe
Bulgaria 108002 ➤ Subscribe
Bulgaria 66050 ➤ Subscribe
Brazil 0116417 ➤ Subscribe
Canada 2432151 ➤ Subscribe
Canada 2756207 ➤ Subscribe
Country Document Number Estimated Expiration Supplementary Protection Certificate SPC Country SPC Expiration

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Serving leading biopharmaceutical companies globally:

Cantor Fitzgerald
Covington
Chinese Patent Office
Chubb
Teva
Deloitte
Cipla
Citi
Moodys

Drugs may be covered by multiple patents or regulatory protections. All trademarks and applicant names are the property of their respective owners or licensors. Although great care is taken in the proper and correct provision of this service, thinkBiotech LLC does not accept any responsibility for possible consequences of errors or omissions in the provided data. The data presented herein is for information purposes only. There is no warranty that the data contained herein is error free. thinkBiotech performs no independent verifification of facts as provided by public sources nor are attempts made to provide legal or investing advice. Any reliance on data provided herein is done solely at the discretion of the user. Users of this service are advised to seek professional advice and independent confirmation before considering acting on any of the provided information. thinkBiotech LLC reserves the right to amend, extend or withdraw any part or all of the offered service without notice.

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