U.S. District Court for the District of Massachusetts

A Massachusetts federal jury found that Abiomed’s Impella heart pump devices do not infringe Maquet Cardiovascular’s intravascular blood pump patents, ending a long-running patent dispute between the Johnson & Johnson and Getinge subsidiaries.

In three pre-trial rulings, the District of Massachusetts denied summary judgment on Abiomed’s written description defense, eliminated its indefiniteness arguments, declined to kill the reverse doctrine of equivalents, and found waiver on a last-minute means-plus-function claim construction bi