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Dow
Chinese Patent Office
Healthtrust
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Generated: January 21, 2018

DrugPatentWatch Database Preview

Details for Patent: 8,642,573

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Which drugs does patent 8,642,573 protect, and when does it expire?

Patent 8,642,573 protects XIFAXAN and is included in one NDA.

This patent has thirty-two patent family members in eleven countries.
Summary for Patent: 8,642,573
Title:Methods of treating hepatic encephalopathy
Abstract: The application describes treatment of hepatic encephalopathy using gastrointestinal specific antibiotics. One example of a gastrointestinal specific antibiotic is rifaximin. The instant application also provides methods for determining if a subject has a neurological condition or hepatic encephalopathy by determining the critical flicker frequency and/or the venous ammonia level of the subject at two or more time points. The invention further provides methods for treating these subjects.
Inventor(s): Forbes; William (Raleigh, NC), Merchant; Kunal (Durham, NC), Bortey; Enoch (Chapel Hill, NC), Shaw; Audrey (Durham, NC)
Assignee: Salix Pharmaceuticals, Ltd (Raleigh, NC)
Application Number:13/737,535
Patent Claim Types:
see list of patent claims
Use;

Drugs Protected by US Patent 8,642,573

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
Salix Pharms XIFAXAN rifaximin TABLET;ORAL 022554-001 Mar 24, 2010 RX Yes Yes ➤ Subscribe ➤ Subscribe REDUCTION IN RISK OF OVERT HEPATIC ENCEPHALOPATHY (HE) RECURRENCE ➤ Subscribe
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 8,642,573

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
9,421,195 Methods of treating hepatic encephalopathy ➤ Subscribe
7,928,115 Methods of treating travelers diarrhea and hepatic encephalopathy ➤ Subscribe
8,829,017 Methods of treating traveler's diarrhea and hepatic encephalopathy ➤ Subscribe
9,629,828 Methods of treating traveler's diarrhea and hepatic encephalopathy ➤ Subscribe
8,969,398 Methods of treating hepatic encephalopathy ➤ Subscribe
8,946,252 Methods of treating traveler's diarrhea and hepatic encephalopathy ➤ Subscribe
9,629,829 Methods of treating hepatic encephalopathy ➤ Subscribe
Patent No. Title Estimated Patent Expiration

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International Patents Family Members for US Patent 8,642,573

Country Document Number Estimated Expiration Supplementary Protection Certificate SPC Country SPC Expiration
Russian Federation 2011154138 ➤ Subscribe
Russian Federation 2540513 ➤ Subscribe
Russian Federation 2012101310 ➤ Subscribe
Russian Federation 2571268 ➤ Subscribe
New Zealand 597080 ➤ Subscribe
New Zealand 596851 ➤ Subscribe
Mexico 2011013427 ➤ Subscribe
Mexico 2011012829 ➤ Subscribe
Mexico 2011003548 ➤ Subscribe
South Korea 20170036116 ➤ Subscribe
Country Document Number Estimated Expiration Supplementary Protection Certificate SPC Country SPC Expiration

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Serving leading biopharmaceutical companies globally:

Daiichi Sankyo
Medtronic
Merck
Julphar
Chinese Patent Office
Deloitte
US Army
McKesson
UBS

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