Dr. Yieyie Yang specializes in complex patent litigation in US district courts, as well as patent challenge and review procedures (IPR and PGR) in the fields of chemistry, pharmaceuticals, and biotechnology. Dr. Yang has experience representing large pharmaceutical and biotechnology companies in Hatch Waxman and biopharmaceutical litigation, as well as appeals to the Federal Circuit Court of Appeals. Dr. Yang is also responsible for patent applications, layout, and due diligence on intellectual property for different clients. Dr. Yang has been recognized by Best Lawyers as one of the "Ones to Watch" lawyers due to his outstanding performance in the field of patent law.