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Details for Patent: 8,642,573
Which drugs does patent 8,642,573 protect, and when does it expire?
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 | ➤ Sign Up | ➤ Sign Up | REDUCTION IN RISK OF OVERT HEPATIC ENCEPHALOPATHY (HE) RECURRENCE | ➤ Sign Up | ||||
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 |
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 |
---|---|---|
8,946,252 | Methods of treating traveler's diarrhea and hepatic encephalopathy | ➤ Sign Up |
8,969,398 | Methods of treating hepatic encephalopathy | ➤ Sign Up |
9,421,195 | Methods of treating hepatic encephalopathy | ➤ Sign Up |
7,928,115 | Methods of treating travelers diarrhea and hepatic encephalopathy | ➤ Sign Up |
Patent No. | Title | Estimated Patent Expiration |
International Patents Family Members for US Patent 8,642,573
Country | Document Number | Estimated Expiration | Supplementary Protection Certificate | SPC Country | SPC Expiration |
---|---|---|---|---|---|
Russian Federation | 2571268 | ➤ Sign Up | |||
Russian Federation | 2012101310 | ➤ Sign Up | |||
Russian Federation | 2540513 | ➤ Sign Up | |||
Russian Federation | 2011154138 | ➤ Sign Up | |||
Country | Document Number | Estimated Expiration | Supplementary Protection Certificate | SPC Country | SPC Expiration |