Regular patent agencies can be found on the website of China National Intellectual Property Administration or the website of the All-China Patent Agents Association. For example, in the column of patent agency management of China National Intellectual Property Administration website, enter the words "Yuanda Zhuo Yue" to search for Beijing Yuanda Zhuo Yue Intellectual Property Agency; Enter the word "Yuanda Zhuo Yue" in the patent agency query under the industry management of the website of the All-China Patent Agents Association, and you can retrieve the intellectual property agency of Beijing Yuanda Zhuo Yue, a formal patent agency. Information about all qualified patent agents can also be found on the website of the All-China Patent Agents Association. The above-mentioned black agents include not only law firms and trademark agencies that do not have patent agency qualifications, but also many patent agents who are entrusted to practice privately. These are the targets of China National Intellectual Property Administration's crackdown, and they are also the important targets of the self-regulatory supervision of the All-China Patent Agents Association. At present, the All-China Patent Agents Association is planning to revise the Regulations on the Administration of Patent Agents. The newly revised regulations will further tighten the practice conditions of patent agents, strictly examine and approve patent agencies, and strengthen the quality control of patent agents.