Ruitu Law Firm was founded in 2018 under the leadership of Jiang Haijun, a leading intellectual property expert in Jiangsu Province. Its headquarters is located in Nanjing, Jiangsu Province, and branch offices have been established in Suzhou, Changzhou, Hefei, and Hangzhou (in preparation). The team currently has one national expert in overseas intellectual property dispute response guidance, two leading intellectual property experts in Jiangsu Province, six backbone intellectual property talents in Jiangsu Province, and five of the first batch of national patent information practice talents. 50 people have both legal professional qualifications and patent agency qualifications.

Ruitu Law Firm specializes in the full process legal services of intellectual property application, invalidation, litigation, and operation, providing comprehensive and specialized intellectual property services including domestic and international intellectual property layout, intellectual property litigation, intellectual property analysis and evaluation, trade secret protection, and intellectual property consulting. The technical fields involve mechanical and intelligent manufacturing, integrated circuits and software, artificial intelligence, biomedicine, chemical new materials, etc., serving more than a thousand domestic and foreign clients.

Agency cases were selected into the eight typical cases of the Supreme People's Court against unfair competition in 2025, the ten typical cases of patent administrative protection of the China National Intellectual Property Administration in 2024, the first ten typical cases of patent transformation and application of the All China Association of Patent Agents in 2024, the ten typical cases of the Supreme People's Court against unfair competition in 2022, the typical cases of the Intellectual Property Court of the Supreme People's Court (2022), the ten typical cases of national intellectual property administrative protection in 2022, the 100 typical cases of the fifth anniversary of the establishment of the Intellectual Property Court of the Supreme People's Court, the ten cases of invalidity of patent reexamination in 2022 of the China National Intellectual Property Administration, the top ten cases of the Intellectual Property Professional Committee of the All China Bar Association in 2019, and 50 Chinese courts in 2018 Typical cases of intellectual property, etc.

The team has been selected as a special recommendation for the 2024 "MOZLEN 500" list of Chinese foreign-related trademark agencies, listed in the "Brand Guide for Excellent Legal Services" of the Law Society for 2023 and 2024, recognized as one of the "Top 30 Boutique Brand Law Firms" by the Law Society, recognized as an "Outstanding Social Responsibility Brand Law Firm" by the Law Society for 2023, and recognized as an outstanding law firm in Nanjing from 2019 to 2022. The publication of the book "Effective Attack and Defense: An Analysis of Practical Cases of Enterprise Intellectual Property Rights" has been recognized as the "Annual Work" of the Intellectual Property Committee of the National Bar Association for 2023.

In 2023 and 2024, three lawyers (Jiang Haijun, Hu Fengfeng, and Yan Fei) were listed as "China's 50 Elite Intellectual Property Lawyers Under 50", and Jiang Haijun was listed as one of the "Top 50 Outstanding Intellectual Property Lawyers in China" for 2018-2019.