Lerach Coughlin Stoia & Robbins LLP Files Class Action Suit Against Nassda Corporation.

SAN DIEGO -- Lerach Coughlin Stoia & Robbins LLP (http://www.lcsr.com/cases/nassda/) today announced that a class action has been commenced in the United States District Court for the Northern District of California on behalf of purchasers of Nassda Corporation ("Nassda") (NASDAQ:NSDA) publicly traded securities during the period between December 13, 2001 and June 11, 2004 (the "Class Period"), including those who acquired their shares pursuant to its Initial Public Offering ("IPO").

If you wish to serve as lead plaintiff, you must move the Court no later than 60 days from today. If you wish to discuss this action or have any questions concerning this notice or your rights or interests, please contact plaintiff's counsel, William Lerach or Darren Robbins of Lerach Coughlin Stoia & Robbins LLP at 800-449-4900 or via e-mail at [e-mail]. If you are a member of this class, you can view a copy of the complaint as filed or join this class action online at http://www.lcsr.com/cases/nassda/. Any member of the purported class may move the Court to serve as lead plaintiff through counsel of their choice, or may choose to do nothing and remain an absent class member.

The complaint charges Nassda and certain of its officers and directors with violations of the Securities Exchange Act of 1934. Nassda is a provider of full-chip circuit simulation and analysis software for the design and verification of complex nanometer-scale semiconductors.

According to the complaint, Nassda began licensing its software in July 1999. Nassda's founders are all former employees of Synopsys Corporation ("Synopsys"), the World's second-largest maker of electronic design automation software. Synopsys filed two suits against the Company, including a complaint in state court that alleges misappropriation of trade secrets and a suit in federal court charging patent infringement. Synopsys is the owner of United States Patent No. 5,878,053 (the "'053 patent"), entitled "Hierarchical Power Network Simulation and Analysis Tool for Reliability Testing of Deep Submicron Designs." The complaint alleges that during the Class Period, Nassda was infringing on the Synopsys '053 patent by making, using, selling, distributing, advertising, marketing and creating source code for products, including Nassda's Hierarchical Storage and Isomorphic Matching ("HSIM") software product. Synopsys has alleged that Nassda has actively induced infringement of, or contributed to the infringement of, the '053 patent by making infringing products and creating source code for infringing products and then selling, distributing, advertising and marketing those infringing products to others. Synopsys gave Nassda actual notice of the '053 patent and sought from Nassda information that would assist Synopsys in further investigating the extent to which Nassda's products are within the scope of each claim of the '053 patent. Nassda refused to provide substantive information in response to this request. Synopsys informed Nassda that it was infringing the '053 patent, but Nassda has continued to pursue its infringing activities. Several current employees of Nassda were formerly key employees of Synopsys who left Synopsys en masse to develop Nassda's infringing product. These employees knew or should have known that their actions, in creating, selling and distributing Nassda's infringing software products, constituted patent infringement.

On January 10, 2003, a judge ruled that some of Nassda's founders copied proprietary source code from Synopsys to help develop their software. The judge found that certain former Synopsys employees viewed Synopsys products days before leaving Synopsys and then used those products to develop Nassda's programs used in semiconductor design.

These disclosures caused Nassda's stock to decline by 50% to less than $6 per share before closing at $7.10 per share on January 10, 2003, on volume of more than 5.7 million shares.

Then on Monday June 14, 2004, Nassda revealed that the California state court on June 11, 2004 issued orders against Nassda and individual defendants named in the litigation with Synopsys. These orders limited Nassda's defenses regarding the timing and the development of the initial HSIM source code and the evidence that Nassda and the remaining individual defendants could present at trial. The court's orders established as fact that the first 60,000 lines of source code of HSIM and all ideas and concepts reflected therein were derived from Synopsys's source code or other Synopsys materials while the individual defendants were employed by Synopsys. The court also ruled that Nassda and the individual defendants acted in concert to intentionally alter, destroy, lose or misplace items requested in discovery and conceal evidence. The Company's shares plummeted to below $4.00 per share on this news.

Plaintiff seeks to recover damages on behalf of all purchasers of Nassda publicly traded securities during the Class Period (the "Class"). The plaintiff is represented by Lerach Coughlin Stoia & Robbins LLP, which has expertise in prosecuting investor class actions and extensive experience in actions involving financial fraud.

Lerach Coughlin Stoia & Robbins LLP, a 140-lawyer firm with offices in San Diego, San Francisco, Los Angeles, New York, Boca Raton, Washington, D.C., Houston, Philadelphia and Seattle, is active in major litigations pending in federal and state courts throughout the United States and has taken a leading role in many important actions on behalf of defrauded investors, consumers, and companies, as well as victims of human rights violations. Lerach Coughlin Stoia & Robbins LLP lawyers have been responsible for more than $20 billion in aggregate recoveries. The Lerach Coughlin Stoia & Robbins LLP Web site (http://www.lcsr.com) has more information about the firm.