U.S. Patent Office Grants Second Request for Reexamination of '114 Patent in Synopsys-Magma Dispute.

All 15 Claims Rejected in First Reexamination - Second Request Raises "Substantial New Question of Patentability"

SAN JOSE, Calif. -- Magma[R] Design Automation Inc. (Nasdaq:LAVA) announced today that the U.S. Patent and Trademark Office (PTO) granted Magma's second request for reexamination of U.S. Patent No. 6,378,114 (the '114 patent), one of the patents at issue in the California patent infringement lawsuit between Magma and Synopsys Inc. (Nasdaq: SNPS). Magma requested this second reexamination in December 2006 based on additional prior art that Synopsys had not cited in its patent application to the PTO. In response to the first request for reexamination, the PTO rejected all 15 claims in the '114 patent. In granting Magma's second request for reexamination, the PTO said Magma's request raised "a Substantial New Question of Patentability" as to all 15 claims.

The '114 patent is one of three at issue in the companies' patent dispute pending before the U.S. District Court for the Northern District of California. In January the court rejected Synopsys' position that it owned the other two patents, U.S. Patents 6,453,446 and 6,725,438 (the '446 and '438 patents), ruling instead that Synopsys shares ownership with IBM. In February Magma asked the court to dismiss the claims of infringement with regard to the '446 and '438 patents because patent law requires that all co-owners of a patent join an action for patent infringement and IBM has not joined the lawsuit.

This case is one of two patent lawsuits between the companies. In the second case, pending before the U.S. District Court for Delaware, Magma claims that four Magma patents are infringed by key Synopsys products, including Astro, Design Compiler, IC Compiler, Physical Compiler and PrimeTime. Synopsys asserts that Magma infringes one Synopsys patent. The trial in the Delaware case is scheduled to begin in June 2007.

Filings, court orders and other documents relevant to this matter are available on the Magma website at www.magma-da.com/PatentLitigation.html.

About Magma

Magma's software for integrated circuit (IC) design is recognized as embodying the best in semiconductor technology. The world's top chip companies use Magma's electronic design automation (EDA) software to design and verify complex, high-performance ICs for communications, computing, consumer electronics and networking applications, while at the same time reducing design time and costs. Magma provides software for IC implementation, analysis, physical verification, characterization and programmable logic design, and its integrated RTL-to-GDSII design flow offers "The Fastest Path from RTL to Silicon"[TM]. Magma is headquartered in Santa Clara, Calif., with offices around the world. Magma's stock trades on Nasdaq under the ticker symbol LAVA. Visit Magma Design Automation on the Web at www.magma-da.com.

Magma is a registered trademark and "The Fastest Path from RTL to Silicon" is a trademark of Magma Design Automation Inc. All other product and company names are trademarks or registered trademarks of their respective companies.

FORWARD-LOOKING STATEMENTS:

Except for the historical information contained herein, the matters set forth in this press release are forward-looking statements within the meaning of the "safe harbor" provisions of the Private Securities Litigation Reform Act of 1995. These forward-looking statements are subject to risks and uncertainties that could cause actual results to differ materially, including risks inherent in litigation. Further discussion of these and other potential risk factors may be found in Magma's public filings with the Securities and Exchange Commission (www.sec.gov). Magma undertakes no additional obligation to update these forward-looking statements.