If the patent number has expired, can I continue to use the original package by covering the patent number on the original package? Is it approved by the Intellectual Property Office?

It is ok for manufacturers to do so.

If the expired patent continues to be used, it is a counterfeit patented product. There is a cover and no patent number, which may be irregular, but there is no patent law and no detailed rules for its implementation.

We don't care whether the mall accepts it or not.

I hope my answer can solve your problem and help you. Have a happy day!