Last Updated: November 12, 2026

Details for Patent: 7,163,931

Name: Drug Patent Intelligence for US Patent 7163931
Creator: DrugPatentWatch
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Summary for Patent: 7,163,931

Title:	Compositions of estrogen-cyclodextrin 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 β-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):	Thomas Backensfeld, Wolfgang Heil, Ralph Lipp
Assignee:	Bayer Pharma AG , Bayer Intellectual Property GmbH
Application Number:	US11/102,681
Patent Litigation and PTAB cases:	See patent lawsuits and PTAB cases for patent 7,163,931
Patent Claim Types: see list of patent claims	Use; Composition;

Drugs Protected by US Patent 7,163,931

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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
>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: 7,163,931

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

International Family Members for US Patent 7,163,931

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Country	Patent Number	Estimated Expiration	Supplementary Protection Certificate	SPC Country	SPC Expiration
Argentina	032205	⤷ Start Trial
Austria	311204	⤷ Start Trial
Australia	1941802	⤷ Start Trial
Australia	2002219418	⤷ Start Trial
>Country	>Patent Number	>Estimated Expiration	>Supplementary Protection Certificate	>SPC Country	>SPC Expiration

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