Aug. 14 (Bloomberg) -- Rambus Inc., the designer of chips for Sony Corp.’s PlayStation video-game console, won a court ruling allowing the company to continue pursuing its antitrust claims against memory-chip manufacturers.

A California appeals court yesterday denied a request by Micron Technology Inc. to block some claims from going forward. Rambus rose $1.94, or 12.3 percent, to $17.75 in Nasdaq Stock Market trading.

Micron’s request that the appeals court reconsider rulings made by Judge Richard Kramer in San Francisco -- and set aside the judge’s denial of Micron’s bid to dismiss the case -- was the last such attempt by the manufacturers, said Jeff Schreiner, an analyst at San Diego-based Capstone Investments.

“There’s nothing left before Judge Kramer that could stop the trial at this point,” Schreiner said. The trial is to start Sept. 28.

Rambus sued Micron, Samsung Electronics Co. and Hynix Semiconductor Inc., claiming the chipmakers conspired to fix prices of dynamic random access memory, or DRAM, to make Rambus- designed chips more expensive and keep the Los Altos, California-based company out of the market.

Micron spokesman Dan Francisco declined to comment.

Rambus spokeswoman Linda Ashmore said in an e-mailed statement that the company was pleased with the ruling and looks forward to the trial next month.

The case is Rambus Inc. v. Micron Technology Inc., 04- 431105, San Francisco County Superior Court (San Francisco).

To contact the reporter on this story: Joel Rosenblatt in San Francisco at jrosenblatt@bloomberg.net.

Last Updated: August 14, 2009 16:44 EDT