In Pursuance of the “Separation of Power” doctrine depicted in the Constitution of the Republic of China, there are five distinct branches to form the government. Accordingly, if the executive branch is exercising judicial power, it is an obvious violation to the doctrine thereof. However, the existence of Administrative Law Judges in both federal and state administrative branches in the United States does not regarded as jeopardizing said doctrine. In addition, the Intellectual Property Office in mainland China are exercising judicial power as well, although it is conducted by executive officers rather than Administrative Law Judges. Therefore, it is worthwhile to conduct a study to reveal the infrastructure of these related systems. This article suggests that, judging by the “profession” and “efficiency”, we should consider to establish the Administrative Patent Judge to exercise selective judicial power in the Intellectual Property Office or the Appeal Committee of Ministry of Economic Affairs, such that people would be able to redress the grievances is the administrative branch in a timely manner. Further, we would also consider establish the Administrative Law Judge in the Fair Trade Committee based on the same reason. The rationale of this mechanism is that “independence” and “justice” are both underlying elements of “Separation of Power”, but these two are not mutual exclusive. So, if the judicial power exercised in the administrative branch can provide same level of justice, it is not necessary to mandate these two to be independent to each other.