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Ericsson sues Apple for telecom patent infringement

Swedish mobile telecom gear maker Ericsson is suing Apple for patent infringement after Apple refused Ericsson's offer to have a court determine fair licensing terms, Ericsson said on Friday.

Ericsson said it filed a complaint with the U.S.International Trade Commission (ITC) requesting an exclusion order against Apple's products for infringing Ericsson patents that are essential to the 2G and 4G/LTE standards.

Shoppers at an Apple store in New York.
Scott Mlyn | CNBC
Shoppers at an Apple store in New York.

It also filed a second ITC complaint seeking an exclusion order and multiple complaints in the United States District Court for the Eastern District of Texas requesting damages and injunctions for infringement of patents "critical to many other aspects of Apple's devices".

Read MoreNow Ericsson sues Apple, as patent war heats up

Gustav Brismark, head of patent strategy at Ericsson,told Reuters that Apple's previous license agreement with Ericsson had expired around mid-January.

Ericsson filed a complaint in mid-January against Apple over mobile technology license payments, responding to a lawsuit from the iPhone maker.

Apple filed its suit on Jan. 12, alleging the LTE wireless technology patents were not essential to industry cellular standards and that Ericsson was demanding excessive royalties.

If the dispute with Apple went Ericsson's way, the U.S.firm would have to pay it between 2-6 billion ($250-750 million) crowns annually, analysts said after Ericsson's complaint in January, based on estimates of levels of handset sales and royalty payments per phone.

Read MoreEricsson earnings hit by North America slowdown

Ericsson had IPR revenues of 9.9 billion Swedish crowns($1.18 billion) in 2014.

Ericsson, the world's number one mobile network equipment manufacturer ahead of China's Huawei and Finland's Nokia , said two years agoit was prioritising intellectual property rights (IPR) revenues, given its patent portfolio and investments in research and development.

Patent infringement suits have become frequent in high-tech industries such as telecoms in recent years.