Alleman Hall McCoy Russell & Tuttle LLP has an active China practice, primarily advising U.S. clients on Chinese intellectual property matters. AHMRT attorneys work closely together with Chinese patent attorneys to handle international patent and trademark prosecution, patent and trademark licensing, patent non-infringement and invalidity studies, trademark oppositions and cancellations, and patent and trademark litigation matters. The firm has native Chinese speaking staff, including Amber Sun and Linna Chen, both of whom are registered as U.S. patent attorneys.