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Last Updated: February 4, 2023

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 is included in one NDA.

This patent has forty-seven 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 Litigation and PTAB cases: See patent lawsuits and PTAB cases for patent 6,441,168
Patent Claim Types:
see list of patent claims
Compound; Use; Formulation;

Drugs Protected by US Patent 6,441,168

Applicant Tradename Generic Name Dosage NDA Approval Date TE Type RLD RS Patent No. Patent Expiration Product Substance Delist Req. Patented / Exclusive Use Submissiondate
Bayer Hlthcare BEYAZ drospirenone; ethinyl estradiol; levomefolate calcium TABLET;ORAL 022532-001 Sep 24, 2010 AB RX Yes Yes See Plans and Pricing See Plans and Pricing Y See Plans and Pricing
>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: 6,441,168

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

International Family Members for US Patent 6,441,168

Country Patent Number Estimated Expiration Supplementary Protection Certificate SPC Country SPC Expiration
Austria 451372 See Plans and Pricing
Austria 496052 See Plans and Pricing
Australia 2768900 See Plans and Pricing
Australia 782641 See Plans and Pricing
Canada 2305926 See Plans and Pricing
Switzerland 693905 See Plans and Pricing
China 1154648 See Plans and Pricing
>Country >Patent Number >Estimated Expiration >Supplementary Protection Certificate >SPC Country >SPC Expiration

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Serving leading biopharmaceutical companies globally:

Harvard Business School
Merck
Moodys
Dow
Medtronic
McKesson

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 verification 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.