The Emeryville-based a toy a company filed a suit Friday in federal a court in Wilmington , Del . , claiming Fisher-Price is violating its 1998 a patent on interactive a learning books for toddlers and preschoolers .
The Emeryville-based a toy a company filed a suit Friday claiming Fisher-Price is violating its 1998 a patent on interactive-learning books for toddlers and preschoolers .