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Generated: December 15, 2017

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Details for Patent: 5,653,972

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Summary for Patent: 5,653,972

Title: Preserved ophthalmic drug compositions containing polymeric quaternary ammonium compounds
Abstract:Disclosed are storage-stable preserved ophthalmic compositions containing acidic drugs in combination with polymeric quaternary ammonium compounds and boric acid.
Inventor(s): Desai; Suketu Dipakbhai (Fort Worth, TX), Nelms; Diane S. (Fort Worth, TX)
Assignee: Alcon Laboratories, Inc. (Fort Worth, TX)
Application Number:08/700,960
Patent Claim Types:
see list of patent claims
Use; Composition;

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International Patent Family for Patent: 5,653,972

Country Document Number Estimated Expiration Supplementary Protection Certificate SPC Country SPC Expiration
Canada2180554► Subscribe
Germany69522094► Subscribe
Denmark0739197► Subscribe
European Patent Office0739197► Subscribe
Australia4162296► Subscribe
Australia686917► Subscribe
Austria203897► Subscribe
Spain2160722► Subscribe
Greece3036622► Subscribe
Hong Kong1012556► 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:

UBS
Mallinckrodt
Deloitte
McKesson
Daiichi Sankyo
Chinese Patent Office
Federal Trade Commission
Julphar
Farmers Insurance
Baxter

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