Network-1 Technologies, Inc. v. Hewlett-Packard Co., No. 18-2338 (Fed. Cir. 2020)Annotate this Case
Network-1’s 930 patent, titled “Apparatus and Method for Remotely Powering Access Equipment over a 10/100 Switched Ethernet Network,” issued in 2001. Network-1 sued HP for infringement. A jury found the patent not infringed and invalid. Following post-trial motions, the district court denied Network-1’s request for a new trial on infringement but granted Network-1’s motion for judgment as a matter of law (JMOL) on validity, holding that HP was estopped from raising certain validity challenges under 35 U.S.C. 315(e)(2) based on HP’s joinder to an inter partes review (IPR) before the Patent Trial and Appeal Board.
The Federal Circuit vacated in part and remanded. The district court correctly construed “low-level current” but erred in its construction of “main power source,” and as a result of that error, Network-1 is entitled to a new trial on infringement. Network-1 was prejudiced by the incorrect claim construction. HP was not statutorily estopped from challenging the asserted claims of the patent based on prior art, which was not raised in the IPR and which could not have reasonably been raised by HP. The court affirmed that certain asserted claims were not improperly broadened.