Details for Patent: 8,835,452

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Which drugs does patent 8,835,452 protect, and when does it expire?

Patent 8,835,452 protects XIFAXAN and is included in one NDA.

This patent has ninety-three patent family members in thirty-seven countries.

Summary for Patent: 8,835,452

Title:	Polymorphic forms .alpha., .beta. and .gamma. of rifaximin
Abstract:	Crystalline polymorphous forms of rifaximin (INN) antibiotic named rifaximin .alpha. and rifaximin .beta., and a poorly crystalline form named rifaximin .gamma., useful in the production of medicinal preparations containing rifaximin for oral and topical use and obtained by means of a crystallization 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 determinate temperature and for a determinate period of time, followed by a drying carried out under controlled conditions until reaching a settled 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. (IT)
Application Number:	13/680,967
Patent Litigation and PTAB cases:	See patent lawsuits and PTAB cases for patent 8,835,452
Patent Claim Types: see list of patent claims	Composition; Dosage form;

Drugs Protected by US Patent 8,835,452

Glossary

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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	⤷ 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	Y			⤷ 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	>Submissiondate

Foreign Priority and PCT Information for Patent: 8,835,452

Foriegn Application Priority Data
Foreign Country	Foreign Patent Number	Foreign Patent Date
Italy	MI2003A002144	Nov 7, 2003

International Family Members for US Patent 8,835,452

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Country	Patent Number	Estimated Expiration	Supplementary Protection Certificate	SPC Country	SPC Expiration
Argentina	043547	⤷ Sign Up
Argentina	081991	⤷ Sign Up
Argentina	081992	⤷ Sign Up
Austria	361927	⤷ Sign Up
>Country	>Patent Number	>Estimated Expiration	>Supplementary Protection Certificate	>SPC Country	>SPC Expiration

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