In A Twist, Generics Maker Says Pfizer Infringed Patent

Law360, New York (November 7, 2005, 12:00 AM EST) -- Turning the tables on Pfizer Inc., a Dutch generic drug maker sued the pharmaceutical giant for patent infringement this month, claiming Pfizer’s blockbuster blood pressure drug Norvasc violates its intellectual property.

The lawsuit was filed by Synthon IP Inc., the newly-formed U.S. patent holding subsidiary of generics maker Synthon BV. It asserts two patents for making amlodipine, the active ingredient found in Norvasc. The suit also targets Pfizer’s new drug Caduet, which simultaneously treats high blood pressure and high cholesterol.

The suit was filed in the...
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