On February 7, 2008 Network-1, a non-practicing entity, brought patent infringement charges against Cisco Systems, Inc. and seven other companies over U.S. Patent No. 6,218,930. On July 19, 2010, Network-1 announced that they had reached a settlement with Cisco, among others. Under the terms of the settlement, Cisco must make an upfront payment to Network-1 as well as royalty payments throughout the term of the '930 patent.
This report focuses on patents of interest which predate and are concurrent to Network-1's '930 patent, including public-domain alternatives.