Beijing Beijing YijJu Law Firm, established in 2015, is a high-level, specialized and partnership-model Chinese law firm with its headquarters in Zhongguancun, Beijing. YiJu adheres to the core values of "rigorousness, practicability, integrity and concentration", and is committed to providing specialized legal services and risk control solutions for corporate clients.

YiJu has more than 30 patent litigators and full-time intellectual property lawyers, and have represented more than 2,000 litigation cases relating to patent invalidation, infringement litigation, administrative litigation infringement and trademark litigation, etc., including many cases with social impact, e.g., CSPC levamlodipine patent dispute, Gree vs. Aux patent invalidation case, Mobike patent invalidation case, Hong Kong-Zhuhai-Macao Bridge patent invalidation case, Tencent "Wesee" trademark administrative litigation, Zhongshan Yunteng trademark infringement litigation, Liebherr trademark administrative litigation, Zhoukou "Changshoushan" trademark administrative litigation, patent inventor qualification dispute related to Beijing Olympic "Giant Footprint" launcher, Lertech patent ownership dispute, SJ Environmental Protection unfair competition litigation, U.S. CBI trade secret litigation, etc.