Legal basis: Article 22 of the Measures for the Administration of Patent Agents shall not issue a patent agent's practice certificate under any of the following circumstances:
(1) A person who does not have full capacity for civil conduct; (2) practicing in other patent agencies before the application, not being dismissed by the patent agency and not going through the formalities for canceling the practice certificate of the patent agency; (3) The change of patent agency after obtaining the practice certificate of patent agency is less than 1 year; (4) Being punished by the revocation of the practice certificate of a patent agency as stipulated in Article 5 of the Disciplinary Rules for Patent Agents (Trial) for less than 3 years; (5)