Apple Sued Over Keyboard Technology

By Marius Meland (January 1, 2006, 12:00 AM EST) -- Apple Computer Inc. is being challenged by a United Kingdom-based company over keyboard technology used in its Mac G4 line of PowerBooks and iBooks.

Quantum Technology Management Ltd. sued Apple in the U.S. District Court for the District of Maryland, alleging the computer giant infringes its patents by incorporating into its computers keyboard technology made by Delaware-based Fingerworks Ltd.

The complaint claims that Apple's products, when combined with Fingerworks' keyboard technology, infringes its patents for detecting time domain capacitive fields. The patents were granted in March 1998 to Harald Philipp and subsequently acquired by Quantum.

Touchpads, common on laptops for replacing...

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