Vassu Changotra is a Senior Research Analyst at GreyB with expertise in patent invalidation, standard essentiality analysis, and patent strength assessments. He has contributed to 80+ invalidation projects, 50+ SEP evaluations, and numerous patentability and technology landscape studies. His work focuses on wireless communications, 5G/6G, Wi-Fi, video and audio codecs, IoT, IMS, media access authentication, and network security technologies. He specializes in translating complex technical concepts into robust patent intelligence and prior-art strategies for global clients.