05/22/2008 02:54:22 PM EST
Leapfrog Enterprises, Inc. v. Fisher-Price, Inc., 485 F.3d 1157 (Fed. Cir. 2007)
A patent for a device which taught reading to children by associating letters with their phonemic sounds was not infringed since a competing device only allowed selection of a word rather than a depicted letter, and the patent was invalid as obvious since it merely updated a prior mechanical device with electrical components.