Ultrasound Patent Infringement Claim Filed By Nycomed

26 April 1998

Anglo-Norwegian group Nycomed Amersham has filed claims of patentinfringement in Holland and Germany against Mallinckrodt Medical BV and Mallinckrodt Medical GmbH, and their licensor Molecular Biosystems, in the District Court of the Hague in the Netherlands.

Nycomed is asserting that MBI's Optison ultrasound contrast agent, which is licensed throughout Europe to Mallinckrodt and is currently before the European Medicines Evaluation Agency for marketing approval, infringes Nycomed's European Patent 0 576 521 B1, which was granted September 3, 1997. Nycomed is also pursuing patent infringement claims against MBI's Optison in the USA under its analogous US patent.

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