Nokia, the world's largest mobile phone maker, took legal action earlier this week against two European manufacturers for allegedly infringing on technology patents and registered designs.
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Separate lawsuits were filed in German courts against Vitelcom Mobile Technology of Málaga, Spain, and Paris-based Sagem, Nokia spokeswoman Riita Mard said Friday.
Nokia accuses Vitelcom of infringing on its patents for GSM (Global System for Mobile Communications) and GPRS (General Packet Radio Service) technologies.
The manufacturer said that it has invested considerable time, energy and resources in its own research and development and that Vitelcom should play by the rules and license needed intellectual property.
Nokia is seeking monetary damages and an injunction against the sale and marketing of an unspecified number of Vitelcom phones, according to Mard.
"We can't say at this point what the size of the damages could be," she said. "This depends on the volume of sales."
Sagem also faces a legal challenge from Nokia. Unlike the Vitelcom dispute over patent infringements, the Sagem complaint concerns unauthorised use of registered designs.
"This has nothing to do with patented technology but rather with registered designs that can be viewed as patents," Mard said.
The Nokia spokeswoman declined to comment on the size of the damages sought from Sagem or on any possible timetable for both cases.
Sagem and Vitelcom could not be immediately reached for comment.
John Blau writes for IDG News Service