Patent classification is a system for organizing all U.S. patent documents and other technical documents into specific technology groupings based on common subject matter. On January 1, 2013, the qyule最新电信一 moved from using the United States qyule最新电信一九一九色国产 (USPC) system to the Cooperative qyule最新电信一九一九色国产 (CPC) system, a jointly developed system with the European Patent Office (EPO). CPC has now been adopted by many countries throughout the world.

The Office of International Patent Cooperation (OIPC) Classification Division consists of three support areas created to support CPC policies, practices, and maintenance.  Those areas being:


qyule最新电信一 (CSD) is responsible for administrating the classification standards and development of the Cooperative qyule最新电信一九一九色国产 (CPC). CSD supports Technology Centers in developing and maintaining the patent classification systems searched by examiners and other stakeholders. CSD also contributes to the IP5 Working Group on Classification and International qyule最新电信一九一九色国产 (IPC) system to enable searches of unified classification schemes that yield both US and foreign documents.


qyule最新电信一 (CED) is responsible for publishing revisions to the Cooperative qyule最新电信一九一九色国产 (CPC) scheme.  CED supports internal and external classification stakeholders in modification, organization, and maintenance of the CPC scheme.  CED also updates numerous classification-related reference tools and documents accessible from qyule最新电信一’s Internet and intranet sites.


The qyule最新电信一app下载安装 (CQIC) division is responsible for ensuring classification quality, formulating classification policy, and developing objective quality assurance metrics. CQIC supports internal and external stakeholders by providing classification training. CQIC also oversees the administration of the Cooperative qyule最新电信一九一九色国产 (CPC) project and works with international partners on classification harmonization.

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