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Fish and Richardson
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Generated: November 17, 2017

DrugPatentWatch Database Preview

Details for Patent: 5,565,473

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Summary for Patent: 5,565,473

Title: Unsaturated hydroxyalkylquinoline acids as leukotriene antagonists
Abstract:Compounds having the formula I: ##STR1## are leukotriene antagonists and inhibitors of leukotriene biosynthesis. These compounds are useful as anti-asthmatic, anti-allergic, anti-inflammatory, and cytoprotective agents. They are also useful in treating angina, cerebral spasm, glomerular nephritis, hepatitis, endotoxemia, uveitis, and allograft rejection.
Inventor(s): Belley; Michel L. (Pierrefonds, CA), Leger; Serge (Dollard des Ormeaux, CA), Labelle; Marc (Ville d'Ile Perrot, CA), Roy; Patrick (Pierrefonds, CA), Xiang; Yi B. (Pierrefonds, CA), Guay; Daniel (Montreal, CA)
Assignee: Merck Frosst Canada, Inc. (Kirkland, CA)
Application Number:08/392,592
Patent Claim Types:
see list of patent claims
Compound; Composition; Use;

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International Patent Family for Patent: 5,565,473

Country Document Number Estimated Expiration Supplementary Protection Certificate SPC Country SPC Expiration
Hungary222344► Subscribe
Hungary913217► Subscribe
China1046711► Subscribe
Czechoslovakia9103095► Subscribe
Czech Republic281274► Subscribe
Cyprus2094► Subscribe
Germany19875039► Subscribe
Germany69129257► Subscribe
Denmark0480717► Subscribe
European Patent Office0480717► SubscribeC990009Netherlands► 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:

Johnson and Johnson
Express Scripts
Daiichi Sankyo
Argus Health

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