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Serving leading biopharmaceutical companies globally:

Johnson and Johnson
Federal Trade Commission

Generated: October 23, 2017

DrugPatentWatch Database Preview

Details for Patent: 4,879,303

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Summary for Patent: 4,879,303

Title: Pharmaceutically acceptable salts
Abstract:Improved pharmaceutical salts of amlodipine, particularly the besylate salt, and pharmaceutical compositions thereof. These salts find utility as anti-ischaemic and anti-hypertensive agents.
Inventor(s): Davison; Edward (Margate, GB2), Wells; James I. (Canterbury, GB2)
Assignee: Pfizer Inc. (New York, NY)
Application Number:07/256,938
Patent Claim Types:
see list of patent claims
Compound; Composition; Formulation; Dosage form;

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Foreign Priority and PCT Information for Patent: 4,879,303

Foriegn Application Priority Data
Foreign Country Foreign Patent Number Foreign Patent Date
United Kingdom8608335Apr 04, 1986

International Patent Family for Patent: 4,879,303

Country Document Number Estimated Expiration Supplementary Protection Certificate SPC Country SPC Expiration
China1023800► Subscribe
China87102493► Subscribe
Czechoslovakia8702363► Subscribe
Czechoslovakia265237► Subscribe
Czechoslovakia9103539► Subscribe
Czech Republic289095► Subscribe
Cyprus1669► Subscribe
German Democratic Republic265142► Subscribe
Germany3710457► Subscribe
Germany3761485► 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
Express Scripts
Federal Trade Commission
Chinese Patent Office
Johnson and Johnson

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