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Details for Patent: 8,969,398

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Patent 8,969,398 protects XIFAXAN and is included in one NDA. There has been one Paragraph IV challenge on Xifaxan.

This patent has thirty patent family members in eleven countries.

Summary for Patent: 8,969,398

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.
Inventor(s): Forbes; William (Raleigh, NC)
Assignee: Salix Pharmaceuticals, Ltd. (Raleigh, NC)
Application Number:13/768,617
Patent Claim Types:
see list of patent claims
Use; Dosage form;
Patent Metrics:
Source: PatentQuant.com
Field: Pharmaceuticals
Back Citations: 4th percentile
Forward Citations: 0th percentile

Applicant Tradename Generic Name Dosage NDA Approval Date Type RLD Patent No. Patent Expiration Product Substance Delist Req. Patented / Exclusive Use
Salix Pharms
XIFAXAN
rifaximin
TABLET;ORAL022554-001Mar 24, 2010RXYes8,969,398► subscribe REDUCTION IN RISK OF OVERT HEPATIC ENCEPHALOPATHY (HE) RECURRENCE
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Non-Orange Book Patents for Patent: 8,969,398

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
8,946,252Methods of treating traveler's diarrhea and hepatic encephalopathy► subscribe
9,421,195Methods of treating hepatic encephalopathy► subscribe
7,928,115Methods of treating travelers diarrhea and hepatic encephalopathy► subscribe
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The estimated expiration dates shown above are derived by simply adding 20 years to the priority date.
Because of the complexity of determining patent expiration dates it is advisable to have patent counsel verify freedom to operate.

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International Patent Family for Patent: 8,969,398

Country Document Number Estimated Expiration Supplementary Protection Certificate SPC Country SPC Expiration
New Zealand596851► subscribe
New Zealand597080► subscribe
Russian Federation2011154138► 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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