Patent value evaluation method and system

The invention relates to a patent value evaluation method and system, and the method comprises the steps: building a comprehensive evaluation factor set: the evaluation factor set comprises k layers, and each lower-layer evaluation factor uniquely belongs to an upper-layer evaluation factor, the top evaluation factors influencing the patent value in the evaluation factor set comprise legal value, technical value, economic value, market value, strategic value and industrial value; patent evaluation information is collected according to the kth layer of evaluation factors, a membership function of the kth layer of evaluation factors is set, the function relation between evaluation values and evaluation factor values is determined, and the evaluation value of each evaluation factor of each patent is calculated; determining a weight set of the kth layer of evaluation factors; calculating a patent value degree; according to the method, the factors influencing the patent value degree are fully fused, the incidence