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Qualcomm steps up legal battle with Apple, asks iPhone ban

Qualcomm on Thursday escalated its legal battle with Apple, filing a patent infringement lawsuit and requesting a ban on the importation of some iPhones, claiming unlawful and unfair use of the chipmaker's technology.

US drops antitrust probe of Samsung over patents

US Department of Justice officials on Friday dropped an antitrust investigation into whether Samsung abused essential mobile gadget patents in its ongoing battle with Apple.

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