patent fee

例句：

1. 1. The company has to pay a significant amount of money for the patent fee.
   公司为了获得专利费不得不支付一大笔钱。
2. 2.The patent fee is a significant expense for the inventor.
   专利费对发明者来说是一笔重要的开销。
3. 3.The patent fee is calculated based on the length of the patent and the value of the invention.
   专利费是根据专利的期限和发明的价值来计算的。