Dr. Lavian served as an expert witness in cases of over 140 patents, where he wrote expert reports and testified in over 80 depositions. He has testified in Federal courts, in front of judges and juries, USPTO PTAB IPR, and the ITC. The cases involved leading companies including Amazon, LinkedIn, Avaya, Netflix, T-Mobile, ZTE, AT&T, Ericsson, Sprint, Cisco Systems, Juniper Networks, Polycom, Motorola, HP, LG, WhatsApp, Instagram, Microsoft, Google, Huawei, Facebook, Samsung, and Apple. Below is a list of cases prosecuted along with expert reports, testified, and deposed.