PRESS RELEASE DETAIL


Jan 18, 2008

CoStar Group and LoopNet Settle Copyright Infringement Suit

2003-06-25 2003 CoStar Group and LoopNet Settle Copyright Infringement Suit

BETHESDA, MD -- CoStar Group, Inc. (NASDAQ: CSGP) and LoopNet, Inc. today ...

2003-06-25 2003 CoStar Group and LoopNet Settle Copyright Infringement Suit

BETHESDA, MD -- CoStar Group, Inc. (NASDAQ: CSGP) and LoopNet, Inc. today announced they have settled a copyright infringement lawsuit filed by CoStar against LoopNet.

CoStar brought the suit against LoopNet in the fall of 1999, charging LoopNet infringed CoStar's copyrights by allowing the posting of CoStar's photographs on LoopNet's listing service by its users. For the past three years, the companies have worked together to manually identify and remove infringing photographs and to restrict the ability of repeat infringers from posting additional infringing photographs. Under terms of the settlement agreement, CoStar and LoopNet have agreed to jointly implement additional processes and technologies to prevent further abuses.

"We're glad to bring this lawsuit to conclusion," stated CoStar Group President & CEO Andrew C. Florance. "CoStar and LoopNet worked hard to achieve a resolution that would provide the necessary protection of our copyrighted digital images without inconveniencing our respective customers."

Richard Boyle, LoopNet's Chief Executive Officer, also viewed the settlement as a step forward for all parties. "We applaud the steps being taken by both firms to prevent future abuses from occurring, and we believe the users of both LoopNet and CoStar will benefit from these efforts," he said.

About CoStar Group, Inc.

CoStar Group, Inc. (NASDAQ: CSGP) is the leading provider of information services to commercial real estate professionals in the United States and the United Kingdom. CoStar's suite of products offers customers access via the Internet to the most comprehensive, verified database of commercial real estate information on 50 U.S. markets and the United Kingdom. Based in Bethesda, MD, the company has approximately 850 employees in 34 offices throughout the United States and the United Kingdom, including the largest professional research organization in the industry.

This news release includes "forward-looking statements," which involve many risks and uncertainties that could cause actual results to differ materially from these statements. Factors that could cause or contribute to such differences include, but are not limited to, those stated in CoStar's various filings with the Securities and Exchange Commission, including Form 10-Q for the quarter ended March 31, 2003, under the heading "Risk Factors." All forward-looking statements are based on information available to CoStar on the date hereof, and CoStar assumes no obligation to update such statements.
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