No. 01-1452.

349 F.3d 1333 (2003)

CFMT, INC. and CFM Technologies, Inc., Plaintiffs-Appellants, v. YIELDUP INTERNATIONAL CORP., Defendant-Appellee.

United States Court of Appeals, Federal Circuit.

Rehearing Denied December 9, 2003.

Attorney(s) appearing for the Case

Henrik D. Parker, Woodcock Washburn LLP, of Philadelphia, PA, argued for plaintiffs-appellants. With him on the brief were Barbara L. Mullin, Richard B. LeBlanc, and David N. Farsiou. Of counsel on the brief was Fred T. Magaziner, Dechert LLP, of Philadelphia, PA.

L. Gene Spears, Baker Botts L.L.P., of Houston, TX, argued for defendant-appellee. With him on the brief was David G. Wille, Baker Botts, L.L.P., of Dallas, TX.

Before RADER, Circuit Judge, FRIEDMAN, Senior Circuit Judge, and LINN, Circuit Judge.

RADER, Circuit Judge.

On summary judgment, the United States District Court for the District of Delaware determined that CFMT, Inc.'s U.S. Patent No. 4,778,532 (the '532 patent) and U.S. Patent No. 4,917,123 (the '123 patent) are invalid, CFMT, Inc. v. Yieldup Int'l Corp., 92 F.Supp.2d 359 (D.Del.2000), and, after a bench trial, unenforceable, CFMT, Inc. v. Yieldup Int'l Corp., 144 F.Supp...

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