来源：
页之码IP
Starting from April 12, 2023, the USPTO will change the previous method of issuing official documents and issue examination opinions through the new Patent Center. All previous methods of issuing official documents through PAIR will be moved to the new Patent Center. . The applicant or agent does not need to take any action and will continue to receive official documents issued by the USPTO in the previous way, but the email address for sending the documents will change.
