1. my country’s patent law does not allow modifications to patent documents after authorization, let alone supplementing the content of claims.
2. If the technical content you want to add to the claim has been made public, there is no way to remedy it.
3. If it has not been made public, you can apply for a new utility model patent or invention patent for protection.
4. The way to modify the claims of an authorized patent is to propose that part of your patent rights is invalid, and then combine the features of the original claims, but you cannot add new features, and it is not allowed. Expand the scope of protection.