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Last Updated: August 4, 2021

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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 ninety-four patent family members in thirty-seven 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 Litigation and PTAB cases: See patent lawsuits and PTAB cases for patent 7,906,542
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 Submissiondate
Salix Pharms XIFAXAN rifaximin TABLET;ORAL 021361-001 May 25, 2004 RX Yes Yes ⤷  Free Forever Trial ⤷  Free Forever Trial Y Y ⤷  Free Forever Trial
Salix Pharms XIFAXAN rifaximin TABLET;ORAL 022554-001 Mar 24, 2010 RX Yes Yes ⤷  Free Forever Trial ⤷  Free Forever Trial Y Y ⤷  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 7,906,542

Country Patent Number Estimated Expiration Supplementary Protection Certificate SPC Country SPC Expiration
Argentina 043547 ⤷  Free Forever Trial
Argentina 081991 ⤷  Free Forever Trial
Argentina 081992 ⤷  Free Forever Trial
Austria 361927 ⤷  Free Forever Trial
>Country >Patent Number >Estimated Expiration >Supplementary Protection Certificate >SPC Country >SPC Expiration

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Serving leading biopharmaceutical companies globally:

Colorcon
Moodys
McKinsey
Mallinckrodt
Medtronic
Express Scripts

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