MENT Mentor Graphics Corp.

Mentor Graphics Corporation (Nasdaq:MENT) today announced that it will release financial results for its third fiscal quarter, which ended September 30, 2005, on Thursday, October 20, 2005, at 1:15 p.m. Pacific Time. Following the release, Mentor will also host a live webcast to discuss the outcome of Q3, beginning at 2:00 p.m. Pacific Time. What: Mentor Graphics live webcast of Q3 financial results When: Thursday, October 20, 2005, at 2:00 p.m. Pacific Time Webcast: http://www.mentor.com/company/investor_relations About Mentor Graphics Mentor Graphics Corporation (Nasdaq:MENT) 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 about $700 million and employs approximately 3,900 people worldwide. Corporate headquarters are located at 8005 S.W. Boeckman Road, Wilsonville, Oregon 97070-7777; Silicon Valley headquarters are located at 1001 Ridder Park Drive, San Jose, California 95131-2314. World Wide Web site: http://www.mentor.com/.