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Qualcomm Sues Nokia

A brief patent-litigation cease-fire breaks down.

A brief litigation cease-fire has broken down between wireless giants Qualcomm (QCOM) - Get Report and Nokia (NOK) - Get Report.

Qualcomm says it has filed a lawsuit in London charging Nokia with patent infringement. The San Diego wireless standard-bearer accuses Nokia of using two patents in the United Kingdom related to second-generation mobile-phone technology.

The lawsuit seeks an injunction against Nokia and financial damages for phones already sold.

"We are aware of it," says a Nokia representative. "We are disappointed again that they have decided to litigate with regard to GSM patents. We will defend ourselves and ensure that our rights are protected," the rep said.

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Qualcomm and the top cell-phone maker have been contesting their mutual intellectual property boundries for years, but last month the companies

signaled a truce. Nokia and Qualcomm issued a joint statement announcing that they were in discussions to renew a licensing deal set to expire in a year.

In October, Nokia, along with



Texas Instruments

(TXN) - Get Report





, filed a complaint asking the European Commission to rule that Qualcomm's pricey licensing fees were driving up phone costs.

Qualcomm shares were down 27 cents to $45.11, and Nokia was up 12 cents to $21.42 in premarket trading Wednesday.