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Details for Patent: 7,915,275

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Patent 7,915,275 protects XIFAXAN and is included in one NDA. There has been one Paragraph IV challenge on Xifaxan.

This patent has seventy-eight patent family members in thirty-four countries.

Summary for Patent: 7,915,275

Title:Use of polymorphic forms of rifaximin for medical preparations
Abstract: The present invention relates to Rifaximin polymorphic forms .alpha., .beta. and .gamma., to their use in medicinal preparations for the oral or topical route and to therapeutic methods using them.
Inventor(s): Viscomi; Giuseppe C. (Bologna, IT), Campana; Manuela (Bologna, IT), Confortini; Donatella (Bologna, IT), Barbanti; Miriam (Bologna, IT), Calanni; Fiorella (Bologna, IT)
Assignee: Alfa Wassermann, S.p.A. (Bologna, IT)
Application Number:11/873,841
Patent Claim Types:
see list of patent claims
Use; Composition; Delivery; Formulation;
Patent Metrics:
Source: PatentQuant.com
Field: Pharmaceuticals
Back Citations: 14th percentile
Forward Citations: 14th percentile

Applicant Tradename Generic Name Dosage NDA Approval Date Type RLD Patent No. Patent Expiration Product Substance Delist Req. Patented / Exclusive Use
Salix Pharms
XIFAXAN
rifaximin
TABLET;ORAL022554-001Mar 24, 2010RXYes7,915,275► subscribe TREATMENT OF IRRITABLE BOWEL SYNDROME WITH DIARRHEA (IBS-D) IN ADULTS.
Salix Pharms
XIFAXAN
rifaximin
TABLET;ORAL022554-001Mar 24, 2010RXYes7,915,275► subscribe TREATMENT OF IRRITABLE BOWEL SYNDROME WITH DIARRHEA (IBS-D) IN ADULTS AND SYMPTOMS THEREOF.
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Foreign Priority and PCT Information for Patent: 7,915,275

Foriegn Application Priority Data
Foreign Country Foreign Patent Number Foreign Patent Date
ItalyMI03A2144Nov 7, 2003

Non-Orange Book Patents for Patent: 7,915,275

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
7,045,620Polymorphous forms of rifaximin, processes for their production and use thereof in medicinal preparations► subscribe
8,853,231Pharmaceutical compositions comprising polymorphic forms .alpha., .beta., and .gamma. of rifaximin► subscribe
8,158,781Polymorphic forms .alpha., .beta. and .gamma. of rifaximin► subscribe
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The estimated expiration dates shown above are derived by simply adding 20 years to the priority date.
Because of the complexity of determining patent expiration dates it is advisable to have patent counsel verify freedom to operate.

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International Patent Family for Patent: 7,915,275

Country Document Number Estimated Expiration Supplementary Protection Certificate SPC Country SPC Expiration
Denmark1557421► subscribe
Denmark1676847► subscribe
Denmark1676848► subscribe
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The estimated expiration dates shown above are derived by simply adding 20 years to the priority date.
Due to the complexity of determining patent expirations even in a single country, compounded by the diversity of global patent laws, it is advisable to have patent counsel verify freedom to operate.

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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 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.

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