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Serving hundreds of leading biopharmaceutical companies globally:

Chinese Patent Office
Cipla
Citi
Johnson and Johnson
Cerilliant
Covington
McKesson
Merck
Accenture

Generated: May 21, 2018

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

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Non-Orange Book US Patents Family Members for Patent 6,890,957

For Orange Book-listed patents (shown in the main table above) generic applications must certify that the listed patents are expired, invalid, or will not be infringed by generic entry.

The non-Orange Book patents listed below do not require formal certifications, so they do not automatically impede generic entry. Instead, they represent potential opportunities for branded firms to block generic entry through patent infringment challenges.

Patent No. Title Estimated Patent Expiration
6,559,187 Liquid formulation of metformin ➤ Try a Free Trial
Patent No. Title Estimated Patent Expiration

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International Family Members for US Patent 6,890,957

Country Document Number Estimated Expiration Supplementary Protection Certificate SPC Country SPC Expiration
Australia 7659801 ➤ Try a Free Trial
Brazil 0113102 ➤ Try a Free Trial
Canada 2416767 ➤ Try a Free Trial
China 1635881 ➤ Try a Free Trial
Country Document Number Estimated Expiration Supplementary Protection Certificate SPC Country SPC Expiration

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Serving hundreds of leading biopharmaceutical companies globally:

Argus Health
Moodys
AstraZeneca
Julphar
US Department of Justice
Colorcon
Covington
US Army
QuintilesIMS

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