Can the annual patent fee be reduced?

Can't reduce, can only slow down, that is to say, can't "free".

Individuals who declare and submit mitigation applications at the time of application can reduce the annual fee by 85%.

When an enterprise applies, it can reduce or exempt 70% by submitting the mitigation application and the mitigation certificate stamped by the government at the time of application.

Similarly, you can apply for mitigation after application.