In this paper, two world patent databases: Intellectual Property Digital Library and esp@ cenet was introduced, and how to search PCT patent in these databases was discussed.

• 作者介绍了因特网上两大国际专利数据库;世界知识产权数字图书馆和欧洲专利局专利数据库的概况及如何运用两大数据库检索国际专利。