Silvaco Announces Final Settlement with Circuit Semantics Resolving All Legal Disputes

Santa Clara, August 5, 2006 – Silvaco, a leading provider of technology computer aided design (TCAD) software, today announced the definitive agreement that ends litigation between Silvaco and Circuit Semantics Inc. (CSI). As a result of this settlement, Silvaco has obtained full ownership of all former CSI Dyna group of products, including patent rights and source code as of the last official day of business of CSI on August 15, 2004. Simucad will continue the development, sales and support of these products under the names AccuCell™ and AccuCore™.

“I am pleased that this legal battle with CSI is finally over after years of litigation”, said Dr. Ivan Pesic, CEO of Silvaco International Inc. and Simucad Design Automation Inc. “We can now move forward”.

“Now that the cloud of litigation with CSI is behind us, we welcome former CSI and new customers”, said Ken Brock, vice president of marketing for Simucad Design Automation. “After several years of working with key customers, adding capabilities, fixing bugs, re-engineering and porting to multiple platforms, we are now ready to deliver a powerful set of cell, block, and full-chip characterization solutions”.

About Silvaco

Silvaco, headquartered in Santa Clara, California was founded in 1984. The company has been a leading vendor of technology computer aided design (TCAD) simulation software since 1987. Since 1987, Silvaco expanded its presence to eight international sales and support offices. In 2004, Silvaco spun out Simucad Design Automation to focus on electronic design automation (EDA). Silvaco delivers its proven Stanford-based TCAD products and supports them with experienced engineers to provide complete semiconductor process and device simulation solutions.

About Simucad Design Automation

Simucad Design Automation is a leading provider of simulation and CAD software tools used for developing analog, mixed-signal, and RF integrated circuits. Founded in 2004 the company delivers proven products for circuit simulation, custom IC layout/verification, interconnect modeling, digital simulation, and IP characterization. The company integrates these best-in-class products with experienced support and engineering services to provide a complete PDK-based design flow with interfaces to leading third-party design platforms. Worldwide customers include leading fabless semiconductor companies, integrated device manufacturers, foundries, universities and designers of integrated circuits who require the utmost in accuracy, performance and value. For more information, call (408) 567-1000 or visit Simucad online at www.simucad.com.

For more information:

408-654-4392