Magma Design Automation

( LAVA) gained after the Santa Clara, Calif., semiconductor design software company said the U.S. Patent and Trademark Office rejected all the claims in a

Synopsys

(SNPS) - Get Report

patent.

The validity of the patent has been in dispute during the companies' litigation that's currently before the U.S. District Court for the Northern District of California.

"This determination by the U.S. PTO is entirely consistent with the position we have maintained throughout the case, which is that

the patent is invalid," said David Stanley, Magma corporate vice president, corporate affairs. "We are pleased with the U.S. PTO's action."

The decision doesn't invalidate the Synopsys patent, but Magma said it is an "intermediate step in the re-examination process that may ultimately result in the patent being deemed invalid."

Magma was up 59 cents, or 8.4%, to $7.58. Synopsys slipped 16 cents to $17.95.