RADER, Circuit Judge.
The United States District Court for the Northern District of Illinois held that eSpeed, Inc., Ecco LLC, Ecco Ware Ltd., and eSpeed International Ltd. (collectively, "eSpeed") infringed the asserted claims of U.S. Patent No. 6,772,132 ("'132 patent") and U.S. Patent No. 6,766,304 ("'304 patent") with one accused service product, but not willfully. The district court further held that the two other accused products did not literally infringe and...
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