News Release-- January 18, 2005

CSC WINS $280 MILLION CONTRACT TO SUPPORT UNITED STATES PATENT AND TRADEMARK OFFICE

EL SEGUNDO, Calif., Jan. 18 - Computer Sciences Corporation (NYSE: CSC) announced today that it has won a systems development and integration contract to provide services to the U.S. Patent and Trademark Office (USPTO). The agreement is one of the largest information technology (IT) contracts ever awarded by the USPTO. CSC estimates the value of the award, which has one base year and seven one-year options, to be approximately $280 million to the company if all options are exercised.

Under the terms of the agreement, CSC will provide the USPTO with systems design, development, implementation, integration, maintenance, testing and training. CSC will also assess performance effectiveness and provide feedback to the USPTO to help evolve and improve life cycle processes and enterprise architecture.

“Since 1997, CSC has helped the USPTO develop and maintain information systems that are modernizing business processes and moving the agency steadily forward into world-class e-government operations,” said Paul Cofoni, president of CSC’s Federal Sector business unit. “This award underscores CSC’s experience and history with the USPTO in providing superior operational results. Under the new contract, CSC will continue working with the USPTO to help user communities improve productivity and modify systems rapidly to meet federal mandates and international commitments.”

Approximately 150 employees from CSC’s Civil Systems Development division will perform the work primarily in Alexandria, Va. The USPTO’s mission is to ensure that the intellectual property system contributes to a strong global economy, encourages investment in innovation and fosters entrepreneurial spirit.

About CSC

Founded in 1959, Computer Sciences Corporation is a leading global IT services company. CSC's mission is to provide customers in industry and government with solutions crafted to meet their specific challenges and enable them to profit from the advanced use of technology.

With approximately 91,000 employees, CSC provides innovative solutions for customers around the world by applying leading technologies and CSC's own advanced capabilities. These include systems design and integration; IT and business process outsourcing; applications software development; Web and application hosting; and management consulting. Headquartered in El Segundo, Calif., CSC reported revenue of $15.3 billion for the 12 months ended Oct. 1, 2004. For more information, visit the company's Web site at www.csc.com.