Vringo, a company that offers ringtones, but has increasingly relied on licensing its patent portfolio, is the latest to take aim at ZTE.

The company announced today that it has filed a lawsuit against the Chinese telecommunications equipment company, saying that it has violated three of its patents. According to the lawsuit, which was filed in the U.K. High Court of Justice, Chancery Division Patents Court, Vringo alleges that ZTE's cellular network technologies, as well as its GSM/UMTS multimode wireless handsets, are violating its patents.

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