Fish & Richardson attorneys won a decisive patent defense victory for Fresenius Medical Care, a Massachusetts-based maker of dialysis machines.

On July 18, an Oakland, Calif., jury invalidated all four of the patents being asserted by Baxter International against Fresenius. Baxter, based in Deerfield, Ill., was seeking $87 million in damages from Fresenius for patent infringement associated with the “Fresenius 2008K” hemodialysis machine and an injunction barring Fresenius from continuing to sell the unit.