Abstract: In order to solve the problem in patent value evaluation of agricultural machinery equipment, this paper built an index system of patent value evaluation based on the patent text, and identified the weight coefficient of each evaluation index by factor analysis method to establish an evaluation model. And this paper also validated and verified the model through a case study and an expert assessment method. The results showed that this model could assess objectively the patent value on agricultural machinery equipment. In all indices related to the patent value, only the same type of patent was negatively correlated, while the remaining 7 indices were positively correlated with the patent value, such as the attached drawing, and the other claims. The important influence indices on patent value were the attached drawing, follow-up patent; and then rights and claims, international patent classification, technique background, and comparison with foreign patents. While the minimal impact index was the patent inventor, who had little effect on the patent value. The construction of a model could provide reference for patent value evaluation in the field of agricultural machinery equipment and also offer a new thought for patent value evaluation in the other categories.

Key words: agricultural machinery equipment, patent, value evaluation

摘要： 针对农机装备领域专利价值评估盲区，基于专利文本，构建了专利价值评估指标体系，采用因子分析法确定了各评估指标的权重，依此建立评估模型，并对所建模型进行了实证研究，最后引入专家评定法对该模型的有效性做进一步验证。研究表明，该模型能较为客观地评估农机装备专利价值，除同类专利指标与专利得分呈负相关外，附图、权利要求等7个指标均与专利得分呈正相关。对专利得分影响较大的指标是附图、是否为后续专利；其次是权利要求、IPC分类号、背景技术、对比国外专利；影响最小的是发明人。模型的构建为农机装备领域专利价值评估提供了参考，也为其他领域专利价值评估提供了一种新思路。

关键词: 农机装备, 专利, 价值评估