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Last Updated: November 12, 2024

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xifaxan Drug Patent Profile


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Which patents cover Xifaxan, and when can generic versions of Xifaxan launch?

Xifaxan is a drug marketed by Salix Pharms and is included in one NDA. There are twenty-nine patents protecting this drug and two Paragraph IV challenges.

This drug has two hundred and sixteen patent family members in forty countries.

The generic ingredient in XIFAXAN is rifaximin. There are fourteen drug master file entries for this compound. Three suppliers are listed for this compound. Additional details are available on the rifaximin profile page.

DrugPatentWatch® Generic Entry Outlook for Xifaxan

Xifaxan was eligible for patent challenges on May 25, 2008.

By analyzing the patents and regulatory protections it appears that the earliest date for generic entry will be September 2, 2027. This may change due to patent challenges or generic licensing.

There have been eight patent litigation cases involving the patents protecting this drug, indicating strong interest in generic launch. Recent data indicate that 63% of patent challenges are decided in favor of the generic patent challenger and that 54% of successful patent challengers promptly launch generic drugs.

There are two tentative approvals for the generic drug (rifaximin), which indicates the potential for near-term generic launch.

Indicators of Generic Entry

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Drug patent expirations by year for xifaxan
Drug Prices for xifaxan

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Drug Sales Revenue Trends for xifaxan

See drug sales revenues for xifaxan

DrugPatentWatch® Estimated Loss of Exclusivity (LOE) Date for xifaxan
Generic Entry Dates for xifaxan*:
Constraining patent/regulatory exclusivity:
NDA:
Dosage:
TABLET;ORAL
Generic Entry Dates for xifaxan*:
Constraining patent/regulatory exclusivity:
NDA:
Dosage:
TABLET;ORAL

*The generic entry opportunity date is the latter of the last compound-claiming patent and the last regulatory exclusivity protection. Many factors can influence early or later generic entry. This date is provided as a rough estimate of generic entry potential and should not be used as an independent source.

Recent Clinical Trials for xifaxan

Identify potential brand extensions & 505(b)(2) entrants

SponsorPhase
MetroHealth Medical CenterPhase 3
Ronnie Fass, MDPhase 3
Cedars-Sinai Medical CenterPhase 1/Phase 2

See all xifaxan clinical trials

Pharmacology for xifaxan
Paragraph IV (Patent) Challenges for XIFAXAN
Tradename Dosage Ingredient Strength NDA ANDAs Submitted Submissiondate
XIFAXAN Tablets rifaximin 200 mg 021361 1 2019-01-28
XIFAXAN Tablets rifaximin 550 mg 021361 1 2015-12-18

US Patents and Regulatory Information for xifaxan

xifaxan is protected by forty US patents.

Based on analysis by DrugPatentWatch, the earliest date for a generic version of xifaxan is ⤷  Sign Up.

This potential generic entry date is based on patent ⤷  Sign Up.

Generics may enter earlier, or later, based on new patent filings, patent extensions, patent invalidation, early generic licensing, generic entry preferences, and other factors.

Patents protecting xifaxan

Methods of treating hepatic encephalopathy
Patent Number: ⤷  Sign Up
Patent Expiration: ⤷  Sign Up
Patented Use: REDUCTION IN RISK OF OVERT HEPATIC ENCEPHALOPATHY (HE) RECURRENCE

Methods of treating hepatic encephalopathy
Patent Number: ⤷  Sign Up
Patent Expiration: ⤷  Sign Up
Patented Use: REDUCTION IN A SUBJECT'S RISK OF EXPERIENCING A BREAKTHROUGH OVERT HEPATIC ENCEPHALOPATHY (HE) EPISODE

Methods for treating irritable bowel syndrome (IBS)
Patent Number: ⤷  Sign Up
Patent Expiration: ⤷  Sign Up
Patented Use: TREATMENT OF IRRITABLE BOWEL SYNDROME WITH DIARRHEA (IBS-D) IN ADULTS 65 YEARS OF AGE OR OLDER AND SYMPTOMS THEREOF

Methods for treating irritable bowel syndrome (IBS)
Patent Number: ⤷  Sign Up
Patent Expiration: ⤷  Sign Up
Patented Use: TREATMENT OF IRRITABLE BOWEL SYNDROME WITH DIARRHEA (IBS-D) IN ADULTS 65 YEARS OF AGE OR OLDER

Polymorphous forms of rifaximin, processes for their production and use thereof in the medicinal preparations
Patent Number: ⤷  Sign Up
Patent Expiration: ⤷  Sign Up
Patented Use: TREATMENT OF IRRITABLE BOWEL SYNDROME WITH DIARRHEA (IBS-D) IN ADULTS.

Polymorphous forms of rifaximin, processes for their production and use thereof in the medicinal preparations
Patent Number: ⤷  Sign Up
Patent Expiration: ⤷  Sign Up
Patented Use: TREATMENT OF TRAVELERS' DIARRHEA (TD) CAUSED BY NONINVASIVE STRAINS OF ESCHERIA COLI IN ADULT AND PEDIATRIC PATIENTS 12 YEARS OF AGE AND OLDER

Polymorphous forms of rifaximin, processes for their production and use thereof in the medicinal preparations
Patent Number: ⤷  Sign Up
Patent Expiration: ⤷  Sign Up
Patented Use: REDUCTION IN RISK OF OVERT HEPATIC ENCEPHALOPATHY (HE) RECURRENCE IN ADULTS

Methods of treating hepatic encephalopathy
Patent Number: ⤷  Sign Up
Patent Expiration: ⤷  Sign Up
Patented Use: REDUCTION IN A SUBJECT'S RISK OF EXPERIENCING A BREAKTHROUGH OVERT HEPATIC ENCEPHALOPATHY (HE) EPISODE

Methods for treating irritable bowel syndrome (IBS)
Patent Number: ⤷  Sign Up
Patent Expiration: ⤷  Sign Up
Patented Use: TREATMENT OF IRRITABLE BOWEL SYNDROME WITH DIARRHEA (IBS-D) IN ADULTS 65 YEARS OF AGE OR OLDER

Methods for treating irritable bowel syndrome (IBS)
Patent Number: ⤷  Sign Up
Patent Expiration: ⤷  Sign Up
Patented Use: TREATMENT OF IRRITABLE BOWEL SYNDROME WITH DIARRHEA (IBS-D) IN ADULTS 65 YEARS OF AGE OR OLDER AND SYMPTOMS THEREOF


Patent Number: ⤷  Sign Up
Patent Expiration: ⤷  Sign Up
Patented Use: TREATMENT OF IRRITABLE BOWEL SYNDROME WITH DIARRHEA (IBS-D) IN ADULT FEMALE SUBJECTS AND SYMPTOMS THEREOF


Patent Number: ⤷  Sign Up
Patent Expiration: ⤷  Sign Up
Patented Use: TREATMENT OF IRRITABLE BOWEL SYNDROME WITH DIARRHEA (IBS-D) IN ADULT FEMALE SUBJECTS


Patent Number: ⤷  Sign Up
Patent Expiration: ⤷  Sign Up
Patented Use: TREATMENT OF BLOATING ASSOCIATED WITH DIARRHEA-PREDOMINANT IRRITABLE BOWEL SYNDROME (IBS-D) IN ADULT FEMALE SUBJECTS

Polymorphous forms of rifaximin, processes for their production and use thereof in medicinal preparations
Patent Number: ⤷  Sign Up
Patent Expiration: ⤷  Sign Up

Polymorphic forms .alpha., .beta., and .gamma. of rifaximin
Patent Number: ⤷  Sign Up
Patent Expiration: ⤷  Sign Up

Polymorphic forms .alpha., .beta. and .gamma. of rifaximin
Patent Number: ⤷  Sign Up
Patent Expiration: ⤷  Sign Up

Pharmaceutical compositions comprising polymorphic forms .alpha., .beta., and .gamma. of rifaximin
Patent Number: ⤷  Sign Up
Patent Expiration: ⤷  Sign Up

Use of polymorphic forms of rifaximin for medical preparations
Patent Number: ⤷  Sign Up
Patent Expiration: ⤷  Sign Up
Patented Use: TREATMENT OF IRRITABLE BOWEL SYNDROME WITH DIARRHEA (IBS-D) IN ADULTS.

Use of polymorphic forms of rifaximin for medical preparations
Patent Number: ⤷  Sign Up
Patent Expiration: ⤷  Sign Up
Patented Use: TREATMENT OF IRRITABLE BOWEL SYNDROME WITH DIARRHEA (IBS-D) IN ADULTS AND SYMPTOMS THEREOF.

Methods of treating travelers diarrhea and hepatic encephalopathy
Patent Number: ⤷  Sign Up
Patent Expiration: ⤷  Sign Up
Patented Use: METHOD OF TREATING TRAVELERS' DIARRHEA

Pharmaceutical compositions comprising polymorphic forms .alpha., .beta., and .gamma. of rifaximin
Patent Number: ⤷  Sign Up
Patent Expiration: ⤷  Sign Up

Polymorphic forms .alpha., .beta. and .gamma. of rifaximin
Patent Number: ⤷  Sign Up
Patent Expiration: ⤷  Sign Up

Polymorphous forms of rifaximin, processes for their production and use thereof in the medicinal preparations
Patent Number: ⤷  Sign Up
Patent Expiration: ⤷  Sign Up

Polymorphous forms of rifaximin, processes for their production and use thereof in the medicinal preparations
Patent Number: ⤷  Sign Up
Patent Expiration: ⤷  Sign Up
Patented Use: TREATMENT OF IRRITABLE BOWEL SYNDROME WITH DIARRHEA (IBS-D) IN ADULTS AND SYMPTOMS THEREOF.

Polymorphous forms of rifaximin, processes for their production and use thereof in the medicinal preparations
Patent Number: ⤷  Sign Up
Patent Expiration: ⤷  Sign Up
Patented Use: TREATMENT OF IRRITABLE BOWEL SYNDROME WITH DIARRHEA (IBS-D) IN ADULTS.

Methods for treating diarrhea-associated irritable bowel syndrome
Patent Number: ⤷  Sign Up
Patent Expiration: ⤷  Sign Up
Patented Use: TREATMENT OF IRRITABLE BOWEL SYNDROME WITH DIARRHEA (IBS-D) IN ADULTS.

Methods for treating diarrhea-associated irritable bowel syndrome
Patent Number: ⤷  Sign Up
Patent Expiration: ⤷  Sign Up
Patented Use: TREATMENT OF IRRITABLE BOWEL SYNDROME WITH DIARRHEA (IBS-D) IN ADULTS AND SYMPTOMS THEREOF.

Polymorphous forms of rifaximin, processes for their production and use thereof in the medicinal preparations
Patent Number: ⤷  Sign Up
Patent Expiration: ⤷  Sign Up

Methods of treating hepatic encephalopathy
Patent Number: ⤷  Sign Up
Patent Expiration: ⤷  Sign Up
Patented Use: REDUCTION IN RISK OF OVERT HEPATIC ENCEPHALOPATHY (HE) RECURRENCE

Polymorphous forms of rifaximin, processes for their production and use thereof in the medicinal preparations
Patent Number: ⤷  Sign Up
Patent Expiration: ⤷  Sign Up
Patented Use: THE TREATMENT OF PATIENTS WITH TRAVELERS' DIARRHEA (TD) OR THE REDUCTION IN RISK OF OVERT HEPATIC ENCEPHALOPATHY (HE) RECURRENCE

Polymorphous forms of rifaximin, processes for their production and use thereof in the medicinal preparations
Patent Number: ⤷  Sign Up
Patent Expiration: ⤷  Sign Up
Patented Use: TREATMENT OF IRRITABLE BOWEL SYNDROME WITH DIARRHEA (IBS-D) IN ADULTS.

Polymorphous forms of rifaximin, processes for their production and use thereof in the medicinal preparations
Patent Number: ⤷  Sign Up
Patent Expiration: ⤷  Sign Up
Patented Use: TREATMENT OF IRRITABLE BOWEL SYNDROME WITH DIARRHEA (IBS-D) IN ADULTS AND SYMPTOMS THEREOF.

Methods of treating traveler's diarrhea and hepatic encephalopathy
Patent Number: ⤷  Sign Up
Patent Expiration: ⤷  Sign Up
Patented Use: TREATMENT OF PATIENTS WITH HEPATIC ENCEPHALOPATHY (HE)

Polymorphic forms .alpha., .beta. and .gamma. of rifaximin
Patent Number: ⤷  Sign Up
Patent Expiration: ⤷  Sign Up

Pharmaceutical compositions comprising polymorphic forms .alpha., .beta., and .gamma. of rifaximin
Patent Number: ⤷  Sign Up
Patent Expiration: ⤷  Sign Up

Methods of treating traveler's diarrhea and hepatic encephalopathy
Patent Number: ⤷  Sign Up
Patent Expiration: ⤷  Sign Up
Patented Use: REDUCTION IN RISK OF OVERT HEPATIC ENCEPHALOPATHY (HE) RECURRENCE

Methods of treating hepatic encephalopathy
Patent Number: ⤷  Sign Up
Patent Expiration: ⤷  Sign Up
Patented Use: REDUCTION IN RISK OF OVERT HEPATIC ENCEPHALOPATHY (HE) RECURRENCE

Polymorphous forms of rifaximin, processes for their production and use thereof in the medicinal preparations
Patent Number: ⤷  Sign Up
Patent Expiration: ⤷  Sign Up

Methods of treating hepatic encephalopathy
Patent Number: ⤷  Sign Up
Patent Expiration: ⤷  Sign Up
Patented Use: REDUCTION IN RISK OF OVERT HEPATIC ENCEPHALOPATHY (HE) RECURRENCE

Methods of treating traveler's diarrhea and hepatic encephalopathy
Patent Number: ⤷  Sign Up
Patent Expiration: ⤷  Sign Up
Patented Use: REDUCTION IN RISK OF OVERT HEPATIC ENCEPHALOPATHY (HE) IN ADULTS

Applicant Tradename Generic Name Dosage NDA Approval Date TE Type RLD RS Patent No. Patent Expiration Product Substance Delist Req. Exclusivity Expiration
Salix Pharms XIFAXAN rifaximin TABLET;ORAL 021361-002 Mar 24, 2010 RX Yes Yes ⤷  Sign Up ⤷  Sign Up ⤷  Sign Up
Salix Pharms XIFAXAN rifaximin TABLET;ORAL 021361-002 Mar 24, 2010 RX Yes Yes ⤷  Sign Up ⤷  Sign Up ⤷  Sign Up
Salix Pharms XIFAXAN rifaximin TABLET;ORAL 021361-002 Mar 24, 2010 RX Yes Yes ⤷  Sign Up ⤷  Sign Up Y ⤷  Sign Up
Salix Pharms XIFAXAN rifaximin TABLET;ORAL 021361-002 Mar 24, 2010 RX Yes Yes ⤷  Sign Up ⤷  Sign Up Y Y ⤷  Sign Up
Salix Pharms XIFAXAN rifaximin TABLET;ORAL 021361-002 Mar 24, 2010 RX Yes Yes ⤷  Sign Up ⤷  Sign Up Y ⤷  Sign Up
>Applicant >Tradename >Generic Name >Dosage >NDA >Approval Date >TE >Type >RLD >RS >Patent No. >Patent Expiration >Product >Substance >Delist Req. >Exclusivity Expiration

Expired US Patents for xifaxan

Applicant Tradename Generic Name Dosage NDA Approval Date Patent No. Patent Expiration
Salix Pharms XIFAXAN rifaximin TABLET;ORAL 021361-001 May 25, 2004 ⤷  Sign Up ⤷  Sign Up
Salix Pharms XIFAXAN rifaximin TABLET;ORAL 021361-001 May 25, 2004 ⤷  Sign Up ⤷  Sign Up
Salix Pharms XIFAXAN rifaximin TABLET;ORAL 021361-001 May 25, 2004 ⤷  Sign Up ⤷  Sign Up
Salix Pharms XIFAXAN rifaximin TABLET;ORAL 021361-002 Mar 24, 2010 ⤷  Sign Up ⤷  Sign Up
Salix Pharms XIFAXAN rifaximin TABLET;ORAL 021361-002 Mar 24, 2010 ⤷  Sign Up ⤷  Sign Up
>Applicant >Tradename >Generic Name >Dosage >NDA >Approval Date >Patent No. >Patent Expiration

International Patents for xifaxan

When does loss-of-exclusivity occur for xifaxan?

Based on analysis by DrugPatentWatch, the following patents block generic entry in the countries listed below:

Australia

Patent: 06222312
Patent: New polymorphous forms of rifaximin, processes for their production and use thereof in the medicinal
Estimated Expiration: ⤷  Sign Up

Brazil

Patent: 0608073
Patent: formas polimorfas de rifaximina, processos para sua produção e uso das mesmas em composições medicinais
Estimated Expiration: ⤷  Sign Up

Canada

Patent: 94789
Patent: NOUVELLES FORMES POLYMORPHES DE RIFAXIMINE, LEURS PROCEDES DE PREPARATION ET LEUR UTILISATION EN MEDECINE (NEW POLYMORPHOUS FORMS OF RIFAXIMIN, PROCESSES FOR THEIR PRODUCTION AND USE THEREOF IN THE MEDICINAL)
Estimated Expiration: ⤷  Sign Up

China

Patent: 00077
Patent: New polymorphous forms of rifaximin, processes for their production and use thereof in the medicinal preparations
Estimated Expiration: ⤷  Sign Up

Croatia

Patent: 0070433
Patent: NOVI POLIMORFNI OBLICI RIFAKSIMINA, POSTUPCI NJIHOVE PRIPREME I NJIHOVA MEDICINSKA UPOTREBA (NEW POLYMORPHOUS FORMS OF RIFAXIMIN, PROCESSES FOR THEIR PRODUCTION AND USE THEREOF IN THE MEDICINAL)
Estimated Expiration: ⤷  Sign Up

Denmark

Patent: 98630
Estimated Expiration: ⤷  Sign Up

European Patent Office

Patent: 98630
Patent: Nouvelles formes polymorphes du rifaximin, procédés pour leur préparation et leur utilisation en tant que médicaments (New polymorphous forms of rifaximin, processes for their production and use thereof in the medicinal preparations)
Estimated Expiration: ⤷  Sign Up

Hong Kong

Patent: 96396
Patent: NEW POLYMORPHOUS FORMS OF RIFAXIMIN, PROCESSES FOR THEIR PRODUCTION AND USE THEREOF IN THE MEDICINAL PREPARATIONS
Estimated Expiration: ⤷  Sign Up

Japan

Patent: 37825
Estimated Expiration: ⤷  Sign Up

Patent: 08531623
Estimated Expiration: ⤷  Sign Up

Patent: 13216710
Patent: NEW POLYMORPHISM OF RIFAXIMIN, ITS PRODUCING METHOD AND ITS USE IN PHARMACEUTICAL PREPARATIONS
Estimated Expiration: ⤷  Sign Up

Mexico

Patent: 07010742
Patent: NUEVAS FORMAS POLIMORFAS DE RIFAXIMINA, PROCEDIMIENTOS PARA SU PRODUCCION Y USO DE LA MISMA EN PREPARACIONES MEDICINALES. (NEW POLYMORPHOUS FORMS OF RIFAXIMIN, PROCESSES FOR THEIR PRODUCTION AND USE THEREOF IN THE MEDICINAL.)
Estimated Expiration: ⤷  Sign Up

Moldova, Republic of

Patent: 81
Estimated Expiration: ⤷  Sign Up

Patent: 070265
Patent: Forme polimorfe de rifaximina, procedeu deobtinere a lor si utilizarea lor la fabricarea preparatelor medicamentoase (Polymorphous forms of rifaximin, process for their production and use thereof for production of medicinal preparations)
Estimated Expiration: ⤷  Sign Up

Montenegro

Patent: 272
Patent: NOVI POLIMORFNI OBLICI RIFAKSIMINA, POSTUPAK NJIHOVE PROIZVODNJE I NJIHOVA UPOTREBA U MEDICINSKIM PREPARATIMA (NEW POLYMORPHOUS FORMS OF RIFAXIMIN, PROCESSES FOR THEIR PRODUCTION AND USE THEREOF IN THE MEDICINAL)
Estimated Expiration: ⤷  Sign Up

Patent: 4408
Patent: NOVI POLIMORFNI OBLICI RIFAKSIMINA, POSTUPAK NJIHOVE PROIZVODNJE I NJIHOVA UPOTREBA U MEDICINSKIM PREPARATIMA (NEW POLYMORPHOUS FORMS OF RIFAXIMIN, PROCESSES FOR THEIR PRODUCTION AND USE THEREOF IN THE MEDICINAL)
Estimated Expiration: ⤷  Sign Up

Morocco

Patent: 345
Patent: NOUVELLES FORMES POLYMORPHES DE RIFAXIMINE, LEURS PROCEDES DE PREPARATION ET LEUR UTILISATION EN MEDECINE.
Estimated Expiration: ⤷  Sign Up

New Zealand

Patent: 6737
Patent: New polymorphous forms of rifaximin, processes for their production and use thereof in the medicinal preparations
Estimated Expiration: ⤷  Sign Up

Norway

Patent: 2197
Estimated Expiration: ⤷  Sign Up

Patent: 074988
Estimated Expiration: ⤷  Sign Up

Poland

Patent: 98630
Estimated Expiration: ⤷  Sign Up

Portugal

Patent: 98630
Estimated Expiration: ⤷  Sign Up

Russian Federation

Patent: 97985
Patent: НОВЫЕ ПОЛИМОРФНЫЕ ФОРМЫ РИФАКСИМИНА, СПОСОБЫ ИХ ПОЛУЧЕНИЯ И ИХ ПРИМЕНЕНИЕ В ЛЕКАРСТВЕННЫХ ПРЕПАРАТАХ (NOVEL POLYMORPHOUS FORMS OF RIFAXIMIN, SYNTHESIS METHODS AND USE THEREOF IN MEDICINAL PREPARATIONS)
Estimated Expiration: ⤷  Sign Up

Patent: 07136430
Patent: НОВЫЕ ПОЛИМОРФНЫЕ ФОРМЫ РИФАКСИМИНА, СПОСОБЫ ИХ ПОЛУЧЕНИЯ И ИХ ПРИМЕНЕНИЕ В ЛЕКАРСТВЕННЫХ ПРЕПАРАТАХ
Estimated Expiration: ⤷  Sign Up

Serbia

Patent: 570
Patent: NOVI POLIMORFNI OBLICI RIFAKSIMINA, POSTUPAK NJIHOVE PROIZVODNJE I NJIHOVA UPOTREBA U MEDICINSKIM PREPARATIMA (NEW POLYMORPHOUS FORMS OF RIFAXIMIN, PROCESSES FOR THEIR PRODUCTION AND USE THEREOF IN THE MEDICINAL)
Estimated Expiration: ⤷  Sign Up

Patent: 070364
Patent: NOVI POLIMORFNI OBLICI RIFAKSIMINA, POSTUPAK NJIHOVE PROIZVODNJE I NJIHOVA UPOTREBA U MEDICINSKIM PREPARATIMA (NEW POLYMORPHOUS FORMS OF RIFAXIMIN, PROCESSES FOR THEIR PRODUCTION AND USE THEREOF IN THE MEDICINAL)
Estimated Expiration: ⤷  Sign Up

Slovenia

Patent: 98630
Estimated Expiration: ⤷  Sign Up

South Africa

Patent: 0707397
Patent: New polymorphous forms of rifaximin, processes for their production and use thereof in the medicinal preparations
Estimated Expiration: ⤷  Sign Up

South Korea

Patent: 0885755
Estimated Expiration: ⤷  Sign Up

Patent: 060096242
Patent: NEW POLYMORPHOUS FORMS OF RIFAXIMIN, PROCESSES FOR THEIR PRODUCTION AND USE THEREOF IN MEDICINAL PREPARATIONS
Estimated Expiration: ⤷  Sign Up

Spain

Patent: 22895
Estimated Expiration: ⤷  Sign Up

Tunisia

Patent: 07292
Patent: NEW POLYMORPHOUS FORMS OF RIFAXIMIN,PROCESSES FOR THEIR PRODUCTION AND USE THEREOF IN THE MEDICINAL
Estimated Expiration: ⤷  Sign Up

Ukraine

Patent: 809
Patent: НОВЫЕ ПОЛИМОРФНЫЕ ФОРМЫ РИФАКСИМИНА, СПОСОБ ИХ ПОЛУЧЕНИЯ И ИХ ПРИМЕНЕНИЕ В МЕДИЦИНСКИХ ПРЕПАРАТАХ;НОВІ ПОЛІМОРФНІ ФОРМИ РИФАКСИМІНУ, СПОСІБ ЇХ ОТРИМАННЯ ТА ЇХ ЗАСТОСУВАННЯ У МЕДИЧНИХ ПРЕПАРАТАХ (NEW POLYMORPHOUS FORMS OF RIFAXIMIN, PROCESS FOR THEIR PRODUCTION AND USE THEREOF IN THE MEDICINAL)
Estimated Expiration: ⤷  Sign Up

Generics may enter earlier, or later, based on new patent filings, patent extensions, patent invalidation, early generic licensing, generic entry preferences, and other factors.

See the table below for additional patents covering xifaxan around the world.

Country Patent Number Title Estimated Expiration
Spain 2522895 ⤷  Sign Up
China 1613858 Polymorphous forms of rifaximin, processes for their production and use thereof in medicinal preparations ⤷  Sign Up
South Korea 100855084 ⤷  Sign Up
Spain 2972135 ⤷  Sign Up
Russian Federation 2010139475 СПОСОБЫ ЛЕЧЕНИЯ ЗАБОЛЕВАНИЙ КИШЕЧНИКА ⤷  Sign Up
>Country >Patent Number >Title >Estimated Expiration

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Drugs may be covered by multiple patents or regulatory protections. All trademarks and applicant names are the property of their respective owners or licensors. Although great care is taken in the proper and correct provision of this service, thinkBiotech LLC does not accept any responsibility for possible consequences of errors or omissions in the provided data. The data presented herein is for information purposes only. There is no warranty that the data contained herein is error free. thinkBiotech performs no independent verification of facts as provided by public sources nor are attempts made to provide legal or investing advice. Any reliance on data provided herein is done solely at the discretion of the user. Users of this service are advised to seek professional advice and independent confirmation before considering acting on any of the provided information. thinkBiotech LLC reserves the right to amend, extend or withdraw any part or all of the offered service without notice.