Synopsys, Inc. (NASDAQ: SNPS) today announced that Magma Design Automation has requested that the Court dismiss all antitrust claims against Synopsys. In return, Synopsys agrees not to pursue Magma for malicious prosecution or any other claims related to making these anti-competitive accusations against Synopsys. The Court has been asked to dismiss all of these claims 'with prejudice,' meaning they cannot be revived.

"We're pleased that, in addition to recently being ordered to sign over ownership in a number of patents and patent applications in our California action, Magma is dropping all claims of antitrust in the Delaware action," said Brian Cabrera, general counsel for Synopsys. "We remain committed to pursuing the protection of our valuable intellectual property rights and to defending the spirit of technological innovation."

In addition, the parties have agreed to formally dismiss three patents previously withdrawn from the case by the parties: the '610 Patent Magma had asserted as well as the '733 and '501 Patents that Synopsys had donated to the public domain. With the formal dismissal of all antitrust claims and the withdrawal of these patents in the Delaware action, five patent claims will remain. The trial to review these claims is scheduled for June 2007.

About Synopsys

Synopsys, Inc. is a world leader in EDA software for semiconductor design. The company delivers technology-leading semiconductor design and verification platforms and IC manufacturing software products to the global electronics market, enabling the development and production of complex systems-on-chips (SoCs). Synopsys also provides intellectual property and design services to simplify the design process and accelerate time-to-market for its customers. Synopsys is headquartered in Mountain View, California and has offices in more than 60 locations throughout North America, Europe, Japan and Asia. Visit Synopsys online at http:/www.synopsys.com.

NOTE: Synopsys is a registered trademark of Synopsys, Inc. All other trademarks mentioned in this release are the intellectual property of their respective owners.

  Editorial Contact:   Investor Contact:

  Yvette Huygen        Lisa Ewbank
  Synopsys, Inc.       Synopsys, Inc.
  650-584-4547         650-584-1901
  yvetteh@synopsys.com

SOURCE: Synopsys, Inc.

CONTACT: media, Yvette Huygen, +1-650-584-4547, or yvetteh@synopsys.com,
or investors, Lisa Ewbank, +1-650-584-1901, both of Synopsys, Inc.

Web site: http://www.synopsys.com/