Duen Yan is a patent agent who works with clients in the biotech, life sciences, chemical, and mechanical fields in patent prosecution. With over 25 years of experience in biomedical research and over 10 years of experience in patent prosecution, Duen helps clients obtain patents through in-depth technical and patentability analyses and participating in appeal process in the USPTO. He also helps clients understand the patent landscape of their proprietary technologies by performing patent searches and freedom-to-operate analysis.