Lockheed Martin Corp. v. Space Systems/Loral Inc.

Case Number: CLB0001

Date: 03.24.2003

Citation: 66 U.S.P.Q.2d 1282 (Fed. Cir. 2003)

Under the “all-elements rule”, infringement cannot be found by way of the doctrine of equivalents if even one limitation of a claim or its equivalent is not present in the accused device. Thus, when determining the scope of a means-plus-function claim under the doctrine of equivalents, the absence of an element in the accused device that performs the properly construed function, or its equivalent, precludes a finding of infringement.

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