May 11, 2012 – Acacia Research filed an 8-K announcing that its subsidiary, Lambda Optical Solutions, entered into a settlement and license agreement with Fujitsu. In June 2010, Lambda Optical Solutions filed its first patent infringement suit against over 20 companies, including Alcatel-Lucent, Cisco, Fujitsu, NEC, Nokia Siemens, and Tellabs, alleging that the defendants’ optical network switches infringe a patent related to configurable optical switches.  In January 2012, Acacia announced that Lambda had entered into license agreements with Nokia Siemens and Tellabs.