First, work is different. According to the lowest level, they are > Patent Examination Cooperation Center >: China National Intellectual Property Administration > China Patent Technology Development Company.
But the superficial salary of leaders, China Patent Technology Development Company >; Patent Examination Collaboration Center > China National Intellectual Property Administration.
China National Intellectual Property Administration is a state organ, managed by civil servants and provided with free medical care.
The other two are institutions and enterprises, although both are managed by China National Intellectual Property Administration.