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|Title:||Controlled release combination of carbidopa/levodopa|
|Abstract:||A matrix or monolithic drug delivery system for the controlled release of carbidopa and levodopa consists of the two drugs uniformly dispersed in a polymer vehicle at a concentration that is greater than the solubility of either drug in the polymer. Treatment of parkinsonism with the controlled release formulation provides several advantages over treatment with the standard carbidopa/levodopa combinations presently employed.|
|Inventor(s):||Dempski; Robert E. (Dresher, PA), Scholtz; Edward C. (King of Prussia, PA), Nibbelink; Donald W. (Lansdale, PA), Reines; Scott A. (New Hope, PA)|
|Assignee:||Merck & Co., Inc. (Rahway, NJ)|
Patent Claim Types:|
see list of patent claims
|Composition; Formulation; Compound; Dosage form;|
|Country||Document Number||Estimated Expiration||Supplementary Protection Certificate||SPC Country||SPC Expiration|
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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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