Chisako Yagi is a Patent & Trademark Attorney at Nishimura & Asahi, specialising in trademark prosecution, including oppositions, invalidations and cancellations at the Japan Patent Office. Ms Yagi also has expertise in online counterfeit and trademark infringement issues. She earned her LLB from Aoyama Gakuin University and was admitted by the Japan Patent Attorneys Association in 2012. In 2017 she was certified as a qualified IP litigator.