Hynix Semiconductor said Thursday that a U.S. court rejected an antitrust lawsuit filed by Rambus against the chipmaker. The ruling by the Superior Court of the State of California confirmed a November jury decision. Last In November, a San Francisco jury ruled that Hynix and its U.S. peer Micron Technology were not involved in illegal actions to prevent Rambus from expanding into the chipmaking market.

"Hynix welcomes the ruling and will do its best to make an argument for potential appeals," Hynix said in a statement. Rambus is allowed to make an appeal within 60 days.

Rambus filed the complaint in 2004 against Hynix, Micron and Samsung Electronics, accusing the three chipmakers of illegally colluding to keep Rambus' technology from making a footing in the chipmaking market.

Samsung Electronics reached a settlement with Rambus in 2010, in which Samsung would pay Rambus $700 million through 2015.