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U.S. GYPSUM CO. v. LAFARGE NORTH AMERICA, INC.

No. 03 C 6027.

508 F.Supp.2d 601 (2007)

UNITED STATES GYPSUM COMPANY, Plaintiff, Counterdefendant, v. LaFARGE NORTH AMERICA, INC., Defendant, Counterplaintiff, and LaFarge S.A., Daniel C. Myslinski, David Downs, John D. Yockey, Tom Huffer, Charles Jett, Ed Green, William Hartford, Walter Weldon, Kurt F. Kruzshak, and Sidney Spear, Defendants.

United States District Court, N.D. Illinois, Eastern Division.

April 3, 2007.

Attorney(s) appearing for the Case

H. Michael Hartmann, Bruce Michael Gagala, David M. Airan, Eley O. Thompson, Jason Tsuytoshi Murata, Lisa K. Kelly, Mark E. Phelps, Paul J. Filbin, Paul J. Korniczky, Salim Arif Hasan, Leydig, Voit & Mayer, Ltd., Chicago, IL, Aaron Ross Feigelson, Leydig, Voit & Mayer, Ltd., Rockford, IL, for PlaintifVCounter Defendant.

John W. Treece, Douglas I. Lewis, Eric Stephen Mattson, Paul E. Veith, Richard J. O'Brien, Sidley Austin LLP, Steven Yovits, Howrey LLP, Charles B. Sklarsky, Seth A. Travis, Jenner & Block LLP, Chicago, IL, Bruce T. Weider, Burns, Doane, Swecker & Mathis, Alexandria, VA, for Defendants/Counterplaintiffs.

MEMORANDUM OPINION AND ORDER

HART, District Judge.

In its Second Amended Complaint, plaintiff United States Gypsum Company ("USG") alleges that defendant. LaFarge North America, Inc. ("LNA") has infringed certain claims of USG's U.S. Patent No. 5,683,635 related to producing foamed gypsum wallboard. Defendant LaFarge, S.A. ("LSA"), a French corporation that owns a majority share of LNA, is also alleged to be liable for patent infringement.

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