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AQUA-AEROBIC SYSTEMS, INC. v. AERATORS INC.

No. 98-1465.

211 F.3d 1241 (2000)

AQUA-AEROBIC SYSTEMS, INC., Plaintiff-Appellant, v. AERATORS, INC. and Frank Nocifora, defendants-appellees.

United States Court of Appeals, Federal Circuit.

May 3, 2000.

Attorney(s) appearing for the Case

J. Christopher Carraway, Michael Best & Friedrich, LLP, of Milwaukee, Wisconsin. With him on the brief was Michael E. Husmann.

Charles S. Oslakovic, Leydig, Voit & Mayer, Ltd., of Rockford, Illinois. With him on the brief was Gregory C. Bays, Leydig, Voit & Mayer, Ltd., of Chicago, Illinois.

Before NEWMAN, Circuit Judge, SMITH, Senior Circuit Judge, and BRYSON, Circuit Judge.

NEWMAN, Circuit Judge.

Aqua-Aerobic Systems, Inc. appeals the summary judgment of the United States District Court for the Northern District of Illinois,1 holding that Aerators Inc. and Frank Nocifora (collectively "Aerators") do not infringe Aqua-Aerobic's United States Patent No. 4,422,771 ("the '771 patent"). We affirm the judgment of the district court.

BACKGROUND

Downflow mixers are used in water treatment ponds...

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