US trade regulators have begun investigating whether Motorola phones violate Apple patents, following a complaint by the iPhone maker.
Apple has asked the International Trade Commission (ITC) to block imports of Motorola handsets which Apple alleges ‘have caused and will continue to cause Apple irreparable harm’.
Apple has also filed a federal lawsuit against Motorola.
Motorola has said it will ‘vigorously defend’ itself and has filed a countersuit against Apple, asking a judge to declare it is not in breach of he dozen patents that Apple claims it has violated.
Apple is also embroiled in legal disputes with HTC, Nokia and Kodak over phone technologies.
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