Apple and Samsung agreed to drop their appeals of a patent-infringement case at the US International Trade Commissionthat resulted in an import ban on some older Samsung phones. The import ban will remain in effect, according to a filing with the US Court of Appeals for the Federal Circuit in Washington dated Friday. Details were not provided, and Adam Yates, a spokesman for Samsung, and Kristin Huguet, an Apple spokeswoman, declined to say whether the companies had reached an agreement. Samsung had been seeking to overturn the ban, while Apple was trying to revive other patent claims it lost. The focus now turns to Samsung’s efforts to reverse two jury verdicts it lost and Apple’s bid to halt sales of newer Samsung products.