Mentor Graphics Donates Unified Coverage Database (UCDB) to the Accellera Unified Coverage Interoperability Standard (UCIS) Technical Subcommittee

WILSONVILLE, Ore., July 18, 2008 – Mentor Graphics (Nasdaq: MENT) today announced the donation of its Unified Coverage Database (UCDB) specification and application programming interface (API), which manage all coverage data from multiple tools, to Accellera’s Unified Coverage Database Interoperability (UCIS) Technical Subcommittee, the organization for electronic design industry standards.

“Mentor Graphics is pleased its UCDB has been selected by Accellera to promote further standardization in verification management,” said Dennis Brophy, Director of Strategic Business Development, Mentor Graphics. “This is the same API that is used in our Questa verification platform today and offers production-proven technology as the basis for standardization within Accellera.”

Coverage metrics are used to quantify verification effectiveness and to highlight verification shortcomings that require attention. Coverage metrics come from numerous sources, including simulation, static design checking, functional formal verification, sequential equivalence checking and emulation. Each verification tool generally creates one or more collection of coverage metrics that may be discrete, overlapping, or subsets of one another. One of the key roles of the verification team is to bring this voluminous information together and interpret it so the verification team can determine verification completeness.

“Managing verification information for verification closure is a major focus in the electronics industry, and we applaud Mentor’s timely donation to Accellera,” stated Shrenik Mehta, Accellera chairman. “Mentor’s unified coverage database specification and API improves the verification process, and the fact that this technology is actually proven through partner and customer usage makes this donation particularly valuable as an open standard.”

The Mentor Graphics UCDB donation includes the C language API header files and the UCDB API Reference and UCDB API User Guide documentation.

About Accellera’s Unified Coverage Interoperability Standard
The Accellera Unified Coverage Interoperability Standard (UCIS) Technical Subcommittee (TSC) was formed through active participation of the design community and EDA suppliers. The goals of the UCIS TSC are to identify interoperability opportunities between various coverage sources, define standard coverage models for commonly used metrics, design an interoperability standard that allows coverage data to be exchanged among EDA vendors’ tools and IC vendors’ environments, and encourage user and EDA technology advancement for the next generation of coverage solutions. UCIS is open to everyone without requiring non-disclosure agreements or proprietary licenses, and all parties are invited to participate in the development of the standard. For more information about the Accellera Unified Coverage Interoperability Standard, go to http://www.accellera.org/activities/ucis.

About Mentor Graphics
Mentor Graphics Corporation (NASDAQ: MENT - News) is a world leader in electronic hardware and software design solutions, providing products, consulting services, and award-winning support for the world’s most successful electronics and semiconductor companies. Established in 1981, the company reported revenues over the last 12 months of over $850 million and employs approximately 4,200 people worldwide. Corporate headquarters are located at 8005 S.W. Boeckman Road, Wilsonville, Oregon 97070-7777. World Wide Web site: http://www.mentor.com/.

Mentor Graphics is a registered trademark of Mentor Graphics Corporation. All other company or product names are the registered trademarks or trademarks of their respective owners.

For more information, please contact:

Carole Thurman
Mentor Graphics
503.685.4716
carole_thurman@mentor.com

Ry Schwark
Mentor Graphics
503. 685-1660
ry_schwark@mentor.com