Applied Optoelectronics files patent infringement lawsuit against CIG

Applied Optoelectronics announced that it has filed a complaint for patent infringement against Cambridge Industries USA, or CIG, in the U.S. District Court for the Northern District of California, Case No.: 5:24-cv-01010. The complaint, filed February 20, alleges that at least the CIG 100G QSFP28 CWDM4 Module Version 1, the CIG 100G QSFP28 CWDM4 Module Version 2, the CIG 100G LR4 Module, the CIG 400G QSFP-DD DR4 Module, the CIG 400G QSFP-DD FR4 Module, and the CIG 100G QSFP28 PSM4 optical transceiver module infringe one or more of the eight asserted of Applied Optoelectronic optical transceiver patents. “This lawsuit against CIG is a necessary step to protect AOI’s intellectual property that has been obtained through research and development, innovation, and investment. AOI will vigorously enforce its IP rights against alleged infringers,” said Dr. Thompson Lin, Applied Optoelectronics, CEO.