The main contents of patent and proprietary technology use fees include: ① fees for foreign design and technical data, fees for effective patent introduction, fees for proprietary technology use and fees for keeping technical secrets; (2) royalties from domestic valid patents and proprietary technologies; ③ Trademark rights, goodwill and franchise fees, etc. In the project investment, only the patent and proprietary technology use fees that need to be paid during the construction period are calculated. The agreement or contract stipulates that the use fee during the production period should be included in the production cost.