Swedish telecommunications provider Ericsson has filed a patent-infringement lawsuit against Samsung Electronics in a U.S. court.
"Despite nearly two years of negotiations involving the most senior management of both companies, Samsung refused to renew its license to Ericsson's industry leading portfolio of telecommunications patents on the same... terms that its competitors have previously accepted," Ericsson said in a statement.
The complaint was filed in a district court in eastern Texas where Ericsson has its U.S. headquarters.
The firm accuses Samsung of refusing to accept the "fair, reasonable and non-discriminatory" or FRAND terms, whereby companies that make a certain product are entitled to use core technologies for a set fee because they are essential to the product.
Ericsson claims Samsung used its patented technologies under FRAND terms without paying adequate fees. Samsung signed a contract with Ericsson in 2001 to use patented technologies and renewed the deal once in 2007, but the license has expired, the Swedish company said. Ericsson claims it tried over the last two years to renew the license but Samsung refused.
But Samsung says Ericsson made excessive demands. "We cannot accept Ericsson's excessive demands and plan to take all necessary legal measures," Samsung said. It is unclear which phone models are involved in the suit.
Ericsson sued Samsung in 2006, but the two settled out of court. At the time, Ericsson said Samsung violated patented technologies involving frequency amplification.