The method of patent evaluation?

According to the characteristics of patent, the purpose of evaluation and the external market environment, patent evaluation can adopt three methods: cost method, income method and market method. Precautions of three evaluation methods: 1, Precautions of cost method: (1) The replacement cost method of patent should include the reasonable interests of the developer or obligee. (2) Functional devaluation and economic devaluation. 2. Matters needing attention in the income method: (1) reasonably determine the expected income brought by the patent, and analyze the expected changes and income period related to it, the costs and expenses related to the income, supporting assets, cash flow, risk factors and the time value of money; (2) It is convinced that the sum of income allocated to various assets, including patents, does not exceed the income brought by the total assets of the enterprise; (3) The expected income is consistent with the discount rate; Generally speaking, the discount period is the shorter of economic life and legal life; (4) When the predicted trend is obviously inconsistent with the actual situation, analyze the reasons for the difference. 3. Matters needing attention in market law: (1) Determine the patent on the basis of reasonable comparison; (2) Collect the market information of similar patent transactions and the previous transaction information of the evaluated patent; (3) The price information is representative and effective on the evaluation benchmark date; (4) According to the changes of macro-economy, industry and patent situation, and considering the time factor, make necessary adjustments to the past transaction information of the evaluated patent.