一司法实践中，由于知识产权诉讼案件中的待证事实多涉及专业性、技术性问题，法官大多又不懂技术，对待证事实难以识别或认定，故往往需求助于各专业或行业的专家或技术人员。这些待证的专业性、技术性法律事实主要表现在如下几个方面：在专利侵权纠纷案中，将被控侵权产品或 In a judicial practice, because most of the facts to be certified in IP litigation involve professional and technical issues, most judges do not understand the technology and the facts of the card are difficult to identify or identify, experts or professors who often need help in various fields or industries Technical staff. These pending professional, technical legal facts mainly in the following aspects: In the case of patent infringement, will be accused of infringing products or