Appeals Court Affirms Finding of Patent Invalidity in Suit Against Mentor in California

No Impact on ZeBu Sales or Support

MOUNTAIN VIEW, Calif., Oct. 18, 2016 -- Synopsys, Inc. (Nasdaq: SNPS) today announced that a federal appellate court has ruled in favor of Mentor Graphics in its appeal of a previous decision in a proceeding in California.

In 2012, Synopsys filed an action for patent infringement against Mentor Graphics in federal district court in the Northern District of California. In January of 2015, the court granted Mentor's motion for summary judgment, finding that certain asserted patents were invalid. This ruling addresses Synopsys' appeal of that decision.

The ruling has no impact on our business and does not affect the ongoing Oregon proceeding between the parties. Synopsys sells, ships and supports ZeBu emulation systems worldwide, and is committed to investing in and expanding our emulation business. ZeBu is the fastest-growing emulation system in the industry, reflecting its unmatched performance and scalability.

About Synopsys

Synopsys, Inc. (Nasdaq:SNPS) is the Silicon to Software™ partner for innovative companies developing the electronic products and software applications we rely on every day. As the world's 15^th largest software company, Synopsys has a long history of being a global leader in electronic design automation (EDA) and semiconductor IP and is also growing its leadership in software quality and security solutions. Whether you're a system-on-chip (SoC) designer creating advanced semiconductors, or a software developer writing applications that require the highest quality and security, Synopsys has the solutions needed to deliver innovative, high-quality, secure products. Learn more at www.synopsys.com.