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Serving hundreds of leading biopharmaceutical companies globally:

Merck
Chubb
Moodys
US Army
Colorcon
US Department of Justice
QuintilesIMS
Argus Health
Deloitte

Generated: June 24, 2018

DrugPatentWatch Database Preview

Details for Patent: 6,958,326

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Which drugs does patent 6,958,326 protect, and when does it expire?

Patent 6,958,326 protects BEYAZ, SAFYRAL, and YAZ, and is included in three NDAs.

This patent has sixty patent family members in thirty-seven countries.
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 Patent Submitted
Bayer Hlthcare BEYAZ drospirenone; ethinyl estradiol; levomefolate calcium TABLET;ORAL 022532-001 Sep 24, 2010 AB RX No No ➤ Try a Free Trial ➤ Try a Free Trial Y ➤ Try a Free Trial
Bayer Hlthcare SAFYRAL drospirenone; ethinyl estradiol; levomefolate calcium TABLET;ORAL 022574-001 Dec 16, 2010 AB RX Yes Yes ➤ Try a Free Trial ➤ Try a Free Trial Y ➤ Try a Free Trial
Bayer Hlthcare YAZ drospirenone; ethinyl estradiol TABLET;ORAL 021676-001 Mar 16, 2006 AB RX Yes Yes ➤ Try a Free Trial ➤ Try a Free Trial Y ➤ Try a Free Trial
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 ➤ Try a Free Trial
7,569,557 Compositions of estrogen-cyclodextrin complexes ➤ Try a Free Trial
Patent No. Title Estimated Patent Expiration

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International Family Members for US Patent 6,958,326

Country Document Number Estimated Expiration Supplementary Protection Certificate SPC Country SPC Expiration
Argentina 032205 ➤ Try a Free Trial
Austria 311204 ➤ Try a Free Trial
Australia 1941802 ➤ Try a Free Trial
Australia 2002219418 ➤ Try a Free Trial
Country Document Number Estimated Expiration Supplementary Protection Certificate SPC Country SPC Expiration

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Serving hundreds of leading biopharmaceutical companies globally:

US Army
McKesson
US Department of Justice
Express Scripts
Boehringer Ingelheim
Citi
Johnson and Johnson
Colorcon
Farmers Insurance

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