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 资深译员Gilbert,毕业于美国一流的法学院,专注翻译各种与专利申请和专利组合咨询有关的法律文件。