subject matter of an invention

例句：

1. 1. The subject matter of this invention is to improve the efficiency of our manufacturing process.
   这项发明的主题内容是提高我们制造过程的效率。
2. 2. The team's research focuses on the subject matter of renewable energy.
   团队的研究重点在于可再生能源的主题内容。
3. 3.The patent office has issued a new ruling on the subject matter of copyright infringement.
   专利办公室就版权侵权的主题内容发布了新的裁决。