The National Patent Office has prescribed that an invention creation about any basic electric circuit product containing neat electric circuit,block diagrams of electric circuit,and only with electrical functions cannot be granted a utility model patent.

• 国家专利局发布的第 2 7号公告中 ,对实用新型专利的保护对象作了进一步规定 ,明确指出对含有纯电路、电路方框图 ,仅具有电功能的基本电路产品的发明创造不授予实用新型专利权。