It is suggested to choose a law firm with patent agency qualification from the beginning. When patent agents develop to a certain stage, they need to develop in the direction of lawyers, involving high-end business such as patent rights protection. Therefore, a law firm with patent agency qualification can meet your future growth needs. At present, there are not many law firms with patent agency qualifications. You can check which law firms in Shenzhen have patent agency qualifications on the website of the All-China Agents Association.
In addition, it is not necessarily a good law firm with patent agency qualification. Although some law firms are qualified as patent agents, they do not necessarily carry out patent business, so such a law firm is not the best place for you in the early stage.