Major League Baseball is suing baseball card company Upper Deck for allegedly stealing trademarks. Major League Baseball Properties Inc. filed a trademark lawsuit seeking damages against The Upper Deck Co. Inc. on Monday in federal court in Manhattan. The lawsuit said Upper Deck is continuing to sell cards featuring players even though the company is no longer licensed to do so. Major League Baseball Properties began this year to license only The Topps Co. Inc. in a bid to increase its revenues from the cards.