专利可分为产品专利和方法专利两大类。产品专利可对发明产品提供全面、有力的保护,单独的方法专利的保护效力相对较弱。从专利保护角度看,最好既有产品专利又有方法专利,但在新药研制难度越来越大、周期越来越长、资金投入越来越多的今天,这并非易事。目前我国新药研究创 Patents can be divided into two major categories of product patents and method patents. Patented product can provide comprehensive and effective protection of invention products, and the protection of individual method patents is relatively weak. From the point of view of patent protection, it is best to have both product patents and method patents. However, it is not easy at the time when the development of new drugs is becoming more and more difficult, the cycle is getting longer and the capital investment is more and more. At present, China’s new drug research