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Serving hundreds of leading biopharmaceutical companies globally:

Federal Trade Commission
Chubb
Chinese Patent Office
QuintilesIMS
Colorcon
Boehringer Ingelheim
Deloitte
Medtronic
Teva

Generated: April 19, 2018

DrugPatentWatch Database Preview

Details for Patent: 7,906,542

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Which drugs does patent 7,906,542 protect, and when does it expire?

Patent 7,906,542 protects XIFAXAN and is included in two NDAs.

This patent has eighty-one patent family members in thirty-five countries.
Summary for Patent: 7,906,542
Title:Pharmaceutical compositions comprising polymorphic forms .alpha., .beta., and .gamma. of rifaximin
Abstract:Crystalline polymorphous forms of rifaximin (INN), referred to as rifaximin .alpha. and rifaximin .beta., and a poorly crystalline form referred to as rifaximin .gamma., useful in the production of medicaments containing rifaximin for oral and topical use and obtained by means of a crystallization process carried out by hot-dissolving the raw rifaximin in ethyl alcohol and by causing the crystallization of the product by addition of water at a fixed temperature and for a fixed period of time, followed by a drying under controlled conditions until reaching a precise water content in the end product, are the object of the invention.
Inventor(s): Viscomi; Giuseppe Claudio (Bologna, IT), Campana; Manuela (Bologna, IT), Braga; Dario (Bologna, IT), Confortini; Donatella (Bologna, IT), Cannata; Vincenzo (Bologna, IT), Righi; Paolo (Bologna, IT), Rosini; Goffredo (Bologna, IT)
Assignee: Alfa Wassermann, S.p.A. (Bologna, IT)
Application Number:12/119,622
Patent Claim Types:
see list of patent claims
Composition; Dosage form; Formulation;

Drugs Protected by US Patent 7,906,542

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 021361-001 May 25, 2004 RX Yes Yes ➤ Try a Free Trial ➤ Try a Free Trial Y Y ➤ Try a Free Trial
Salix Pharms XIFAXAN rifaximin TABLET;ORAL 022554-001 Mar 24, 2010 RX Yes Yes ➤ Try a Free Trial ➤ Try a Free Trial Y Y ➤ Try a Free Trial
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 7,906,542

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
7,902,206 Polymorphic forms .alpha., .beta. and .gamma. of rifaximin ➤ Try a Free Trial
7,915,275 Use of polymorphic forms of rifaximin for medical preparations ➤ Try a Free Trial
7,923,553 Processes for the production of polymorphic forms of rifaximin ➤ Try a Free Trial
7,045,620 Polymorphous forms of rifaximin, processes for their production and use thereof in medicinal preparations ➤ Try a Free Trial
Patent No. Title Estimated Patent Expiration

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International Patents Family Members for US Patent 7,906,542

Country Document Number Estimated Expiration Supplementary Protection Certificate SPC Country SPC Expiration
Argentina 043547 ➤ Try a Free Trial
Argentina 081991 ➤ Try a Free Trial
Argentina 081992 ➤ Try a Free Trial
Austria 361927 ➤ Try a Free Trial
Country Document Number Estimated Expiration Supplementary Protection Certificate SPC Country SPC Expiration

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Serving hundreds of leading biopharmaceutical companies globally:

UBS
US Army
Chubb
Mallinckrodt
Colorcon
Merck
Fish and Richardson
Johnson and Johnson
Queensland Health

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