Updated from 5:28 p.m. EST Research In Motion ( RIMM) settled a dispute that had threatened to shut down its lucrative BlackBerry wireless email service, for less than many observers had expected. Before the announcement, shares of RIMM were halted; upon their return to trading after the market closed the stock surged $12.12, or 16.9%, to $84.04, approaching levels not seen in eight months. That win was muted, however, by the company's announcement that fourth-quarter numbers will fall short of estimates due to uncertainty linked to the litigation. Waterloo, Ontario-based RIM agreed to pay $612 million to Virginia patent holding company NTP to settle the long-running face-off. The news came as investors were awaiting word of a court ruling on whether the BlackBerry wireless email service would be permitted to continue in the face of a patent challenge winding through the courts. NTP had said BlackBerry service infringes on its intellectual property, and federal courts have largely agreed while prodding the companies to settle. Last year NTP and RIM reached a tentative settlement for $450 million, but NTP later walked away, saying final terms were never reached. The $612 million tab will likely be seen as a victory for RIM. Wall Street had been expecting a payout as high as $1 billion. But the months of turmoil obviously affected potential users of the BlackBerry service. The company said it will miss Wall Street's profit, revenue and user-growth estimates for the fiscal fourth quarter ending tomorrow. The company expects 625,000 net subscriber adds, which is far below December's 725,000-add target. RIM expects to make 65 cents a share on revenue of $555 million for the quarter, where it had guided to a 78-cent profit on revenue of $605 millon. "The main reason for the decrease is that uncertainty surrounding the NTP litigation caused corporate and retail customers in the United States to defer BlackBerry purchase commitments," RIM said of the sub-add shortfall. "While some uncertainty was anticipated in December, the overall impact was greater than previously anticipated."