Patent agents can obtain partnership qualification after passing the examination for several years.

Not a few years, but two years. You can practice after two years, so the fastest time is four years.

Patent agency regulations

Article 19 A partner or shareholder of a patent agency shall meet the following conditions:

(1) Good conduct;

(2) Holding a patent agent qualification certificate;

(3) Having more than two years' experience as a patent agent;

(4) Being able to engage in full-time patent agency business.