Limelight Networks, Inc. v. Akamai Techs, Inc.
Akamai is the exclusive licensee of a patent that claims a method of delivering electronic data using a content delivery network (CDN). Limelight also operates a CDN and carries out several of the steps claimed in the patent, but its customers, rather than Limelight itself, perform a step of the patent known as “tagging.” Under Federal Circuit case law, liability for direct infringement under 35 U.S.C. 271(a) requires performance of all steps of a method patent to be attributable to a single party. The district court concluded that Limelight could not have directly infringed the patent at issue because performance of the tagging step could not be attributed to it. The en banc Federal Circuit reversed, holding that a defendant who performed some steps of a method patent and encouraged others to perform the rest could be liable for inducement of infringement even if no one was liable for direct infringement. The Supreme Court reversed. A defendant is not liable for inducing infringement under section 271(b) when no one has directly infringed. The Federal Circuit’s contrary view would deprive section 271(b) of ascertainable standards and require the courts to develop parallel bodies of infringement law. Citing section 271(f), the Court stated that Congress knows how to impose inducement liability predicated on noninfringing conduct when it wishes to do so. Though a would-be infringer could evade liability by dividing performance of a method patent’s steps with another whose conduct cannot be attributed to the defendant, a desire to avoid this consequence does not justify fundamentally altering the rules of inducement liability clearly required by the Patent Act’s text and structure. View "Limelight Networks, Inc. v. Akamai Techs, Inc." on Justia Law