COSTAR GROUP, INCORPORATED; CoStar Realty Information, Incorporated, Plaintiffs-Appellants, v. LOOPNET, INCORPORATED, Defendant-Appellee. BMG Music; EMI Music, North America; Sony Music Entertainment, Incorporated; Universal Music Group; Univision Music, LLC; Columbia Pictures Industries, Incorporated; Metro-Goldwyn-Mayer Studios, Incorporated; Paramount Pictures Corporation; Twentieth Century Fox Film Corporation; Universal City Studios, LLLP, Amici Supporting Appellants, Bellsouth Telecommunications, Incorporated; Netcoalition; Ebay Incorporated; Computer & Communications Industry Association; Google Incorporated; Yahoo! Incorporated; Amazon.Com, Incorporated; United States Internet Service Provider Association; Verizon Communications, Incorporated; U.S. Internet Industry Association, Amici Supporting Appellee.

United States Court of Appeals for the Fourth Circuit

June 21, 2004

373 F.3d 544