IN RE MICROSOFT CORPORATION ANTITRUST LITIGATION

No. 03-1116.

333 F.3d 517 (2003)

In re MICROSOFT CORPORATION ANTITRUST LITIGATION Sun Microsystems, Inc., a Delaware corporation, Plaintiff-Appellee, v. Microsoft Corporation, a Washington corporation, Defendant-Appellant. WildTangent, Incorporated, Amicus Supporting Appellant. Netscape Communications Corporation, Amicus Supporting Appellee.

United States Court of Appeals, Fourth Circuit.

Decided: June 26, 2003.


Attorney(s) appearing for the Case

ARGUED: David Bruce Tulchin, Sullivan & Cromwell, L.L.P., New York, New York, for Appellant. Lloyd R. Day, Jr., Day, Casebeer, Madrid & Batchelder, L.L.P., Cupertino, California, for Appellee. ON BRIEF: Steven L. Holley, Michael Lacovara, Marc De Leeuw, Brian T. Frawley, Sullivan & Cromwell, L.L.P., New York, New York; Michael F. Brockmeyer, Piper Rudnick, L.L.P., Baltimore, Maryland; David T. McDonald, Karl J. Quackenbush, Preston, Gates & Ellis, L.L.P., Seattle, Washington; Thomas W. Burt, Richard J. Wallis, Linda K. Norman, Microsoft Corporation, Redmond, Washington; Matthew L. Larrabee, Darryl Snider, A. Mari Mazour, Heller, Ehrman, White & Mcauliffe, L.L.P., San Francisco, California, for Appellant. James R. Batchelder, Robert M. Galvin, Day, Casebeer, Madrid & Batchelder, L.L.P., Cupertino, California; Kevin J. Arquit, Simpson, Thacher & Bartlett, New York, New York; Thomas M. Wilson, John B. Isbister, Tydings & Rosenberg, L.L.P., Baltimore, Maryland, for Appellee. O. Yale Lewis, Jr., Stacia N. Lay, Hendricks & Lewis, Seattle, Washington; Kenneth C. Bass, III, Sterne, Kessler, Goldstein & Fox, P.L.L.C., Washington, D.C., for Amicus WildTangent. Evan R. Chesler, Katherine B. Forrest, Cravath, Swaine & Moore, New York, New York; Jeffrey A. Rosen, Richard A. Cordray, Elizabeth S. Petrela, Kirkland & Ellis, Washington, D.C.; James P. Ulwick, Kramon & Graham, Baltimore, Maryland, for Amicus Netscape.

Before WIDENER, NIEMEYER, and GREGORY, Circuit Judges.


Affirmed in part, vacated in part, and remanded by published opinion. Judge NIEMEYER wrote the opinion, in which Judge WIDENER and Judge GREGORY joined.

OPINION

NIEMEYER, Circuit Judge:

Sun Microsystems, Inc. commenced this action against Microsoft Corporation, alleging, among other things, that Microsoft illegally maintained a monopoly in the "worldwide market for Intel-compatible PC operating systems," in violation of § 2 of the Sherman Act...

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