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Serving leading biopharmaceutical companies globally:

Federal Trade Commission
Colorcon
Moodys
Baxter
Daiichi Sankyo
Deloitte
US Army
McKinsey
UBS
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Generated: November 22, 2017

DrugPatentWatch Database Preview

Details for Patent: 4,551,456

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Summary for Patent: 4,551,456

Title: Ophthalmic use of norfloxacin and related antibiotics
Abstract:Norfloxacin and related antibiotics are useful in the treatment of ocular infections by topical administration.
Inventor(s): Katz; Irving M. (Doylestown, PA)
Assignee: Merck & Co., Inc. (Rahway, NJ)
Application Number:06/551,775
Patent Claim Types:
see list of patent claims
Use; Formulation; Composition;

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International Patent Family for Patent: 4,551,456

Country Document Number Estimated Expiration Supplementary Protection Certificate SPC Country SPC Expiration
Australia567979► Subscribe
Australia3538084► Subscribe
Canada1241599► Subscribe
Denmark537784► Subscribe
European Patent Office0142426► Subscribe
Spain537584► Subscribe
Spain8604018► Subscribe
Greece80874► Subscribe
Israel73426► Subscribe
JapanS60123420► 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:

Queensland Health
Mallinckrodt
AstraZeneca
Federal Trade Commission
QuintilesIMS
Healthtrust
Boehringer Ingelheim
Express Scripts
Farmers Insurance
McKinsey

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