Mr. Zhang Zezhou once worked at Sumitomo Chemical Co., Ltd. in Japan for two years and later at the Japanese Department of China Patent Agency (Hong Kong) Co., Ltd. for eight years. He is well-versed in Japanese patent practice and mainly responsible for patent applications, consultations and invalidation cases from the Japanese market. His outstanding language skills and excellent professional capabilities have earned him multiple commendations and case commissions from international clients. Mr. Zhang Zezhou is mainly responsible for international affairs and legal consultation in Japan.

A series of patent invalidation cases and administrative litigation cases between a certain mechanical and electronic device company in Japan and Cui Moumou;

Patent invalidation case and administrative lawsuit case between a certain bicycle company in Japan and Yang;

A series of patent invalidation and infringement cases between a certain Japanese electronics company and a certain Ningbo technology company;

The invalidation case of a series of patents between a certain agricultural machinery company in Japan and Xu Moumou;

The due diligence project of a certain logistics company in Japan for a certain carrier transfer promotion device;

The due diligence project of a certain materials company in Japan for a certain hollow cylindrical filter and manufacturing equipment;

The due diligence project of a certain furniture company in Japan for a certain coat hanger;

The due diligence project of a certain steel company in Japan for a certain rim-driven lifting device;

A due diligence project of a certain furniture company in Japan for a certain hair dryer