validity opinionglossary / validity opinion Patents. A patent attorney’s opinion about the likelihood that a patent or patent claim will be invalidated in light of evidence suggesting obviousness, lack of invention, unenforceability, etc. 词条贡献者 译员Shifang,毕业于国内一流的高级翻译学院,专注翻译各种与员工福利与高管薪酬有关的法律文件。