Is there a difference between invalidation of utility model patent and invalidation of invention patent?

The process and reason of invalidation of utility model patent and invention patent are basically the same, and the biggest difference is that when evaluating creativity, the requirements for the number of existing technologies are different. It is pointed out in the Examination Guide that for utility model patents, 1 to 2 existing technologies can generally be cited to evaluate their creativity, and for utility model patents formed by "simple superposition" of existing technologies, multiple existing technologies can be cited to evaluate their creativity according to the situation. There is no such requirement for invention patents.