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Last Updated: November 12, 2019

DrugPatentWatch Database Preview

Details for Patent: 6,890,957

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Which drugs does patent 6,890,957 protect, and when does it expire?

Patent 6,890,957 protects RIOMET and is included in one NDA.

This patent has eighteen patent family members in eighteen countries.

Summary for Patent: 6,890,957
Title: Liquid formulation of metformin
Abstract:The present invention is directed to a liquid formulation of metformin or its pharmaceutically acceptable salts thereof. The liquid pharmaceutical composition comprises a therapeutically effective amount of metformin or its pharmaceutically acceptable salt, in a liquid carrier, which may also include a sweetener that does not increase the blood glucose level of a subject after ingestion thereof. In one embodiment, it may also include alkyl hydroxyethylcellulose, and/or a polyhydroxy alcohol. In another embodiment, the carrier may contain a sweetener, mineral acid, and bicarbonate salt maintained at a pH of 4.0 to 9.0. It is useful for treating hyperglycemia and diabetes.
Inventor(s): Chandran; Ravi (Bolton Landing, NY), Gogia; Ashish (New Delhi, IN)
Assignee: Ranbaxy Laboratories Limited (New Delhi, IN)
Application Number:10/382,442
Patent Litigation and PTAB cases: See patent lawsuits and PTAB cases for patent 6,890,957
Patent Claim Types:
see list of patent claims
Composition; Dosage form;

Drugs Protected by US Patent 6,890,957

Applicant Tradename Generic Name Dosage NDA Approval Date TE Type RLD RS Patent No. Patent Expiration Product Substance Delist Req. Patented / Exclusive Use Submissiondate
Sun Pharm Inds Ltd RIOMET metformin hydrochloride SOLUTION;ORAL 021591-001 Sep 11, 2003 RX Yes Yes   Start Trial   Start Trial Y   Start Trial
>Applicant >Tradename >Generic Name >Dosage >NDA >Approval Date >TE >Type >RLD >RS >Patent No. >Patent Expiration >Product >Substance >Delist Req. >Patented / Exclusive Use >Submissiondate

International Family Members for US Patent 6,890,957

Country Patent Number Estimated Expiration Supplementary Protection Certificate SPC Country SPC Expiration
Australia 7659801   Start Trial
Brazil 0113102   Start Trial
Canada 2416767   Start Trial
China 1635881   Start Trial
European Patent Office 1387675   Start Trial
Croatia P20030161   Start Trial
Hungary 0302700   Start Trial
>Country >Patent Number >Estimated Expiration >Supplementary Protection Certificate >SPC Country >SPC Expiration

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Serving leading biopharmaceutical companies globally:

AstraZeneca
McKesson
Baxter
Dow
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Express Scripts

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