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Serving leading biopharmaceutical companies globally:

Boehringer Ingelheim
Johnson and Johnson
US Department of Justice

Generated: December 16, 2017

DrugPatentWatch Database Preview

Details for Patent: 6,451,340

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Which drugs does patent 6,451,340 protect, and when does it expire?

Patent 6,451,340 protects HEPSERA and is included in one NDA. There has been one Paragraph IV challenge on Hepsera.

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

Summary for Patent: 6,451,340

Title: Nucleotide analog compositions
Abstract:The invention provides crystalline forms of adefovir dipivoxil and methods to prepare the crystals. The compositions and methods of the present invention have desirable properties for large scale synthesis of crystalline adefovir dipivoxil or for its formulation into therapeutic dosages. Invention compositions include an anhydrous crystal form of adefovir dipivoxil.
Inventor(s): Arimilli; Murty N. (Fremont, CA), Kelly; Daphne E. (San Francisco, CA), Lee; Thomas T. K. (Redwood City, CA), Manes; Lawrence V. (Moss Beach, CA), Munger, Jr.; John D. (Alviso, CA), Prisbe; Ernest J. (Los Altos, CA), Schultze; Lisa M. (San Carlos, CA)
Assignee: Gilead Sciences, Inc. (Foster City, CA)
Application Number:09/950,031
Patent Claim Types:
see list of patent claims
Composition; Use; Formulation; Process; Dosage form;

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
GileadHEPSERAadefovir dipivoxilTABLET;ORAL021449-001Sep 20, 2002ABRXYesYes► Subscribe► SubscribeYYTHERAPY IN CHRONIC HEPATITIS B VIRUS INFECTION► Subscribe
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International Patent Family for Patent: 6,451,340

Country Document Number Estimated Expiration Supplementary Protection Certificate SPC Country SPC Expiration
Argentina016548► Subscribe
Austria228357► Subscribe
Austria277936► Subscribe
Austria277937► Subscribe
Australia747163► Subscribe
Australia8660998► Subscribe
Brazil9811552► Subscribe
Canada2298057► Subscribe
Canada2596320► Subscribe
Canada2596497► 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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Serving leading biopharmaceutical companies globally:

US Army
Daiichi Sankyo

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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