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SEOUL, Dec 26 AFP

December 26 2012, 5:36PM

South Korea's Samsung Electronics says it has filed a complaint to seek a US import ban on some Ericsson products in an escalating patent battle with the Swedish mobile giant.

Samsung took the action on Friday with the US International Trade Commission, seeking a ban on imports and sales of Ericsson's products over alleged infringements of Samsung's wireless and equipment patents.

"We have sought to negotiate with Ericsson in good faith, however Ericsson has proven unwilling to continue such negotiations by making unreasonable claims, which it is now trying to enforce in court," Samsung said in a statement on Wednesday.

"Under such circumstances, we have no choice but to take the steps necessary to protect our company."

The action came after Ericsson this month filed a complaint with the commission seeking a ban on the import of some of Samsung's wireless products, including devices in its Galaxy range.

The two companies are engaged in a patent dispute in a US district court, with Ericsson claiming that Samsung is seeking to drastically reduce the fee it pays to license so-called standard essential patents, which protect inventions incorporated into broader technologies used throughout the industry.

Samsung has argued that Ericsson's fee is too high.