    Sentence 1 The Emeryville-based toy company filed  suit Friday in federal court in Wilmington , Del . ,  |claiming Fisher-Price is violating its 1998 patent on  jinteractive learning books for toddlers = and  preschoolers . a    [Sentence 2/:The Emeryville-based toy company filed  [suit Friday ¢lainiing Fisher-Price is violating its 1898.  patent on interactive-learning books for toddlers and  lpreschoolers .