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Generated: August 25, 2019

DrugPatentWatch Database Preview

Details for Patent: 9,271,968

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Which drugs does patent 9,271,968 protect, and when does it expire?

Patent 9,271,968 protects XIFAXAN and is included in two NDAs.

This patent has thirty-five patent family members in twenty-six countries.

Summary for Patent: 9,271,968
Title:Polymorphous forms of rifaximin, processes for their production and use thereof in the medicinal preparations
Abstract: Crystalline polymorphous forms of the rifaximin (INN) antibiotic named rifaximin .delta. and rifaximin .epsilon. useful in the production of medicinal preparations 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 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 (Sasso Marconi, IT), Campana; Manuela (Bologna, IT), Confortini; Donatella (Calderara di Reno, IT), Barbanti; Maria (Bologna, IT), Braga; Dario (Bologna, IT)
Assignee: ALFA WASSERMANN S.P.A. (IT)
Application Number:14/262,612
Patent Litigation and PTAB cases: See patent lawsuits and PTAB cases for patent 9,271,968
Patent Claim Types:
see list of patent claims
Composition; Formulation; Dosage form;

Drugs Protected by US Patent 9,271,968

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   Try a Free Trial   Try a Free Trial 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   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 >Submissiondate

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International Family Members for US Patent 9,271,968

Country Patent Number Estimated Expiration Supplementary Protection Certificate SPC Country SPC Expiration
Australia 2006222312   Try a Free Trial
Brazil PI0608073   Try a Free Trial
Canada 2594789   Try a Free Trial
China 1900077   Try a Free Trial
Denmark 1698630   Try a Free Trial
>Country >Patent Number >Estimated Expiration >Supplementary Protection Certificate >SPC Country >SPC Expiration

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Serving hundreds of leading biopharmaceutical companies globally:

Deloitte
Chinese Patent Office
Argus Health
Cantor Fitzgerald
McKesson
Covington

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 verifification 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.