maintenance charge

• 维持费

maintenance charge的用法和样例：

例句

1. The applicant for a patent for invention shall pay the application maintenance fee for all the years,with the exception of the year in which the patent right is granted.
   发明专利申请人应当一并缴纳各个年度的申请维持费，授予专利权的当年不包括在内。