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Qualcomm launched a counter-attack in its legal battle with Broadcom, claiming that its US communications chip rival had infringed on seven patents related to third-generation mobile phones and wi-fi networking.

In a suit filed in San Diego, Qualcomm is seeking damages and an injunction preventing Broadcom from selling chips based on the GSM industry standard for 3G telephony.

Broadcom this month launched a suit claiming Qualcomm was abusing its position as patent holder over technology, incorporated into GSM and other 3G standards. Qualcomm dismissed that suit at “meritless”.

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