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Covidien subsidiary sues over patent

Associated Press / April 7, 2009
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WILMINGTON, Del. - Covidien Ltd.'s Mallinckrodt Inc. sued two US units of Italy's Bracco SpA for allegedly infringing a patent for a device used to inject chemicals into patients undergoing magnetic resonance imaging.

Mallinckrodt, based in St. Louis, is asking in court papers for a jury trial, unspecified damages, and an injunction to prevent infringement by Bracco's E-Z-EM Inc. of Lake Success, N.Y., and Acist Medical Systems Inc. of Eden Prairie, Minn.

"Mallinckrodt is the implied exclusive licensee of the patent" and the defendants wrongly "sell a power injector under the name EmpowerMR" that violates the patent, according to a complaint filed April 4 in federal court in Wilmington, Del.

Covidien, with US headquarters in Mansfield, Mass., had $9.91 billion in sales for the year ended Sept. 8.