Which organ has the function of handling patent infringement disputes according to law?

Professional management organs and people's courts. According to Article 60 of the Patent Law, the patentee or interested party may, without the permission of the patentee, request the patent administrative organ to handle the patent infringement, or directly bring a lawsuit to the people's court. The patent administrative organs here include the relevant competent authorities in the State Council and the patent administrative organs established by the people's governments of provinces, autonomous regions, municipalities directly under the Central Government, cities under separate state planning and special economic zones.