RULING ON MOTIONS FOR SUMMARY JUDGMENT [DOCS. ## 119, 121, 124, 127]
JANET BOND ARTERTON, District Judge.
Plaintiff Tyco Healthcare Group LP, doing business as United States Surgical ("U.S.Surgical") instituted this suit against Ethicon Endo-Surgery, Inc. ("Ethicon"), alleging patent infringement by Ethicon of four of U.S. Surgical's patents, all of which relate to a medical tool that uses ultrasonic energy to effect cutting and blood coagulation and is...
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