suraj.sun writes "Nokia today expanded its legal attack against rival Apple to the iPad, alleging that Apple's tablet and iPhone violate five Nokia patents, federal court documents show.
The patents, which cover signal-to-noise modulation, geo-location and antenna technologies, are different than the 17 patents Nokia has claimed Apple infringed in two earlier federal lawsuits.
The filing is the latest in the legal hostilities between Nokia and Apple. In October 2009, Nokia claimed Apple infringed 10 of its patents related to wireless technologies used in the iPhone. Apple countersued in December, charging Nokia with violating 13 of its patents.
Apple is embroiled in other legal battles over its mobile products. The company faces an ITC investigation prompted by a complaint by Eastman Kodak that the iPhone infringes on several of its camera patents.