關於“必要技術特徵”的法理探析

Probe into Jurisprudence of "Essential Technical Features"

《专利法实施细则》（以下简称《细则》）第20.2条关於必要技术特徵的规定，业内称之为“缺少必要技术特徵”，关于专利审查中的驳回和无效宣告的法定理由。为什麽有如此的规定？其立法目的与作用是什麽？我国专利界对此一直重视不够。

Rule 20.2 concerning essential technical features of the Implementing Regulations of the Patent Law （hereinafter re- ferred to as ＂the Implementing Regulations＇）, also known as the provision of ＂lack of essential technical features＂ in the IP community, is a statutory ground for rejection and invalida- tion of patents during examination procedures. Why is there such a provision？ What are its legislative intent and function？ China＇s IP community has never paid enough attention to such an issue. In the examination practice.