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Nokia, the world's top cellphone maker and InterDigital, a wireless technology firm, agreed today to drop patent cases in the British courts against each other. The lawsuits relate to certain 3G mobile phone technology patents owned by the companies and whether they were essential to the UMTS third-generation telephony standard, InterDigital said in a statement.

The dispute began in July 2005, when Nokia filed a complaint asking the High Court in London to declare that 31 European patents of InterDigital were not essential to the UMTS mobile technology standards. In December 2006, InterDigital sued Nokia in the English High Court on UMTS 3G standard. However, the two companies are still locked in court battles in the United States, and InterDigital is also involved in a patent dispute with Samsung Electronics.

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