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Last Updated: July 24, 2021

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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 forty-five patent family members in twenty 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 Litigation and PTAB cases: See patent lawsuits and PTAB cases for patent 8,642,573
Patent Claim Types:
see list of patent claims

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

Country Patent Number Estimated Expiration Supplementary Protection Certificate SPC Country SPC Expiration
Australia 2009298389 ⤷  Free Forever Trial
Australia 2010260089 ⤷  Free Forever Trial
Australia 2010271070 ⤷  Free Forever Trial
Brazil PI0920465 ⤷  Free Forever Trial
Brazil PI1010028 ⤷  Free Forever Trial
Canada 2739436 ⤷  Free Forever Trial
Canada 2763894 ⤷  Free Forever Trial
>Country >Patent Number >Estimated Expiration >Supplementary Protection Certificate >SPC Country >SPC Expiration

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