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Serving leading biopharmaceutical companies globally:

Boehringer Ingelheim
Daiichi Sankyo
Queensland Health
Chinese Patent Office

Generated: November 19, 2017

DrugPatentWatch Database Preview

Details for Patent: 6,441,168

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Which drugs does patent 6,441,168 protect, and when does it expire?

Patent 6,441,168 protects BEYAZ and SAFYRAL and is included in two NDAs. There have been zero Paragraph IV challenges on Safyral and Beyaz

This patent has thirty-nine patent family members in eighteen countries.

Summary for Patent: 6,441,168

Title: Stable crystalline salts of 5-methyltetrahydrofolic acid
Abstract:This invention relates to stable crystalline salts of 5-methyl-(6R,S)-, -(6S)- and -(6R)-tetrahydrofolic acid, to methods of producing these salts and to the use thereof use as a constituent for the production of drugs or as a food additive, and to preparations containing these salts.
Inventor(s): Muller; Rudolf (Schaffhausen, CH), Moser; Rudolf (Schaffhausen, CH), Egger; Thomas (Effretikon, CH)
Assignee: Eprova AG (Schaffhausen, CH)
Application Number:09/551,405
Patent Claim Types:
see list of patent claims
Compound; Use; Formulation;

Applicant Tradename Generic Name Dosage NDA Approval Date TE Type RLD RS Patent No. Patent Expiration Product Substance Delist Req. Patented / Exclusive Use
Bayer Hlthcare
drospirenone; ethinyl estradiol; levomefolate calcium
TABLET;ORAL022532-001Sep 24, 2010ABRXNoNo► Subscribe► SubscribeY
Bayer Hlthcare
drospirenone; ethinyl estradiol; levomefolate calcium
TABLET;ORAL022574-001Dec 16, 2010ABRXYesYes► Subscribe► SubscribeY
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Foreign Priority and PCT Information for Patent: 6,441,168

Foriegn Application Priority Data
Foreign Country Foreign Patent Number Foreign Patent Date
Switzerland695/99Apr 15, 1999

International Patent Family for Patent: 6,441,168

Country Document Number Estimated Expiration Supplementary Protection Certificate SPC Country SPC Expiration
Austria451372► Subscribe
Austria496052► Subscribe
Australia2768900► Subscribe
Australia782641► Subscribe
Canada2305926► Subscribe
Switzerland693905► Subscribe
China1154648► Subscribe
China1277197► Subscribe
Cyprus1109874► Subscribe
Cyprus1111313► 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:

Queensland Health
Boehringer Ingelheim
Express Scripts
Farmers Insurance

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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