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Details for Patent: 8,071,577

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Patent 8,071,577 protects NATAZIA and is included in one NDA. There has been one Paragraph IV challenge on Natazia.

This patent has thirty-seven patent family members in thirty-four countries.

Summary for Patent: 8,071,577

Title:Multi-phase contraceptive preparation based on a natural estrogen
Abstract: The multiphase preparation having higher contraceptive safety and reduced side effects is based on a combination of a natural oestrogen with dienogest or drospirenone. The multiphase preparation is characterized by a first phase consisting of 2 daily dose units of 3 mg of oestradiol valerate, a second phase consisting of 2 groups of daily dose units, wherein a first group is formed by 5 daily dose units each containing a combination of 2 mg of oestradiol valerate and at least two or three times an ovulation-inhibitory dose of dienogest or drospirenone and a second group is formed by 17 daily dose units each containing a combination of 2 mg of oestradiol valerate and at least three or four times the ovulation-inhibitory dose of dienogest or drospirenone, a third phase consisting of 2 daily dose units of 1 mg of oestradiol valerate, and a further phase consisting of 2 daily dose units of pharmaceutically acceptable placebo.
Inventor(s): Endrikat; Jan (Kirkland, CA), Duesterberg; Bernd (Oberkraemer, DE)
Assignee: Bayer Pharma Aktiengesellschaft (Berlin, DE)
Application Number:11/578,771
Patent Claim Types:
see list of patent claims
Use;
Patent Metrics:
Source: PatentQuant.com
Field: Pharmaceuticals
Back Citations: 64th percentile
Forward Citations: 0th percentile

Applicant Tradename Generic Name Dosage NDA Approval Date Type RLD Patent No. Patent Expiration Product Substance Delist Req. Patented / Exclusive Use
Bayer Hlthcare
NATAZIA
dienogest; estradiol valerate
TABLET;ORAL022252-001May 6, 2010RXYes8,071,577► subscribeY PREVENTION OF PREGNANCY
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Foreign Priority and PCT Information for Patent: 8,071,577

Foriegn Application Priority Data
Foreign Country Foreign Patent Number Foreign Patent Date
Germany10 2004 019 743Apr 20, 2004
PCT Information
PCT FiledApril 15, 2005PCT Application Number:PCT/EP2005/004022
PCT Publication Date:November 03, 2005PCT Publication Number: WO2005/102247

International Patent Family for Patent: 8,071,577

Country Document Number Estimated Expiration Supplementary Protection Certificate SPC Country SPC Expiration
Portugal1740163► subscribe
Peru03082006► subscribe
Panama8630901► 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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