Prism Technologies LLC v. Sprint Spectrum L.P., No. 16-1456 (Fed. Cir. 2017)Annotate this Case
Prism’s patents describe methods and systems for managing access to protected information provided over certain “untrusted” networks. The technology involves an access server, an authentication server, and a client. The access server forwards client requests for protected information to the authentication server. If the authentication server, using stored identity data, successfully authenticates the client, the client receives authorization to access the information. After the court construed “Internet Protocol network” and similar limitations as “an untrusted network using any protocol of the Internet Protocol Suite including at least one of IP, TCP/IP UDP/IP, HTTP, and HTTP/IP.” and defined an “untrusted” network as “a public network with no controlling organization, with the path to access the network being undefined and the user being anonymous,” a jury found Sprint liable for infringement and awarded Prism $30 million in reasonable-royalty damages under 35 U.S.C. 284. The district court denied Prism’s motion for additional monetary relief for times after the period Prism said was covered by the jury verdict. The Federal Circuit affirmed, upholding the court’s admission of evidence of a settlement between Prism and AT&T in a suit involving similar allegations and other evidentiary rulings.