In the suit, Acacia was seeking $2.50 per Windows XP license sold in the U.S. for a total sum of between $600 million to $900 million.
Shares of Acacia fell 25 percent to $12.90 in extended trade from its Thursday Nasdaq close of $17.15.
Let's see, Acacia just finished litigating with (losing to!) Microsoft in Beaumont, Texas, just settled one of its cases against AT&T pending in Madison, Wisconsin (details confidential, but sending its stock up 10% yesterday, followed by down 25% in after hours trading due to the MSFT verdict), and has now sued Apple.