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Serving 500+ biopharmaceutical companies globally:

Harvard Business School
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Generated: June 22, 2017

DrugPatentWatch Database Preview

Details for Patent: 4,639,458

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Summary for Patent: 4,639,458

Title: Tablet and formulation
Abstract:A direct compression tablet formulation containing a non-hydrated quinoline carboxylic acid type antibacterial agent.
Inventor(s): Katdare; Ashok V. (Ambler, PA)
Assignee: Merck & Co., Inc. (Rahway, NJ)
Application Number:06/693,071
Patent Claim Types:
see list of patent claims
Composition; Dosage form;

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International Patent Family for Patent: 4,639,458

Country Document Number Estimated Expiration Supplementary Protection Certificate SPC Country SPC Expiration
Canada1273877► Subscribe
Germany3680796► Subscribe
Denmark28786► Subscribe
European Patent Office0189114► Subscribe
Spain551081► 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 500+ biopharmaceutical companies globally:

Queensland Health
QuintilesIMS
Dow
Julphar
Moodys
Citi
Baxter
Deloitte
Healthtrust
Johnson and Johnson

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