Cummins Sues TAS To Invalidate Car Engine Patents

By Samuel Howard ( March 19, 2009, 12:00 AM EDT) -- A third battle has erupted in a protracted war over patented car-engine control technology, with Cummins Inc. firing off a fresh suit against TAS Distributing Co. that claims the patents-at-issue are invalid and unenforceable and an agreement between the two companies is void. . . .

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