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Ericsson hits Samsung with more patent claims

Following February lawsuit against rival, Ericsson adds 11 CDMA and WCDMA patents to list of allegedly infringed.

Swedish telecommunications firm Ericsson has launched a complaint in a U.S. federal court against rival Samsung Electronics, adding to a lawsuit that has been under way since February.

Ericsson is claiming that the Korean manufacturer continues to use technology covered by a patent agreement between the two companies that ended at the close of 2005.

"It's a continuation of the process that started in February," a representative of Ericsson told ZDNet UK on Thursday, adding that the new claims concern 11 patents surrounding CDMA and WCDMA technology, whereas the original lawsuit, filed both in Europe and the United States, dealt with GSM, GPRS and EDGE.

It is understood that Ericsson is trying to stop Samsung from making handsets based on the relevant patents, as the two companies have failed to agree on a price for a renewed agreement.

David Meyer of ZDNet UK reported from London.