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 法律翻译Virginia,毕业于一所旨在培养高级翻译专业人才的翻译院校,专注翻译各类与国际贸易与投资监管有关的法律文件。