BlackBerry maker Research in Motion Ltd. <A HREF="http://www.eweek.com/article2/0,1759,1826008,00.asp">will take court action against NTP</A> after hitting an impasse in finalizing a patent dispute settlement, reopening a legal battle investors had been told was wrapped up. The Canadian company agreed in March to pay $450 million to end the long-running patent dispute with closely held NTP, a U.S.-based patent holding company in return for the right to continue its BlackBerry-related business without further interference from NTP or its patents.