First of all, what is your patent application? From your description, it seems that it is not an application for a patent for design, but an application for a patent for invention or utility model.
If it is an application for a patent for utility model, it will only be made public if it is authorized, and it will not be made public without authorization.
It is difficult to prove that you have copyright if it is not made public.
In addition, the utility model patent protects the technical scheme, not the pattern itself.
Only the technical scheme of the other party falls within the protection scope of your authorized patent, which constitutes patent infringement.
As for whether copyright is infringed, if the contents in the patent application documents are not drawn, copyright cannot be protected, because copyright protects the expression of ideas, not the ideas themselves.