What additional classification systems should patent examiners consider besides CPC?

While the Cooperative Patent Classification (CPC) system is the primary search tool, patent examiners should also consider other classification systems. The MPEP 904.02(a) mentions: “In addition to CPC, there are some other classification tools available such as the International Patent Classification (IPC) and the United States Patent Classification (USPC) system.” Examiners should utilize these additional…

Read More