RADER, Circuit Judge. On summary judgment, the United States District Court for the Northern District of Illinois held that Coolsav-ings.com, Inc. (Coolsavings) did not infringe, either literally or by equivalents, the claims of Catalina Marketing International, Inc.’s (Catalina’s) U.S. Patent No. 4,674,041 (the '041 patent). Catal…
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