Input method can be patented! For example, CN21124754.1, CN211127.9, etc., you can retrieve a lot!

You can find that these are all application numbers, and they are not authorized. In addition, you can also find some authorized input method patents, but they basically have the letter C at the end of their authorization, which means that the patent right is invalid or partially invalid. Therefore, it is difficult to apply for a patent for input method.