What are the methods of patent value evaluation?

1. Cost method The cost method refers to the method of determining the asset value by deducting depreciation according to the current replacement cost of the appraised asset. The replacement cost value of technology refers to the cost value calculated according to the conditions at that time and the current price standard, as well as the manpower, material resources, amount of funds, testing requirements and publicity of past activities. This cost value is the present value of replacement cost. It is mainly composed of the following elements: development cost, technical inspection cost and technical publicity cost. 2. Market method Market method refers to the method of selecting a number of identical or similar assets as reference objects in the market, comparing and adjusting the assessed assets with the reference objects according to various factors affecting the value, and then comprehensively analyzing the results of various adjustments to determine the asset value. When applying the market method as an evaluation method, there should be a fully active market, comparable reference objects and open information. At present, China's technology market is still in the primary stage, with small market transaction volume, unstable market environment and incomplete technical information and materials related to transactions. Moreover, due to the creativity and novelty of the technology itself, it is generally difficult to find the reference information of technology assets trading in the open market, and the application of market method has certain limitations in technology evaluation. 3. Income method Income method refers to the method of determining the value of assets by estimating the future income of the assets being evaluated and converting it into the present value. To sum up, patent is a kind of intellectual property, and shareholders can make capital contribution by virtue of their patents, which belongs to technology shareholding. Before the investment, it is necessary to evaluate the patent value to determine the investment amount and shareholding ratio. At present, many professional institutions engaged in patent value evaluation basically charge fees according to the standard of 10% of the evaluation value.