What information is considered ‘status information’ for a patent application?

Status information of an application includes:

• Whether the application is pending, abandoned, or patented
• Whether the application has been published
• The application number or the serial number plus any one of the filing date of the national application, the international filing date, or the date of entry into the national stage
• Whether another application claims the benefit of the application, and if so, status information for those applications

This is defined in 37 CFR 1.14(a)(2) and further elaborated in MPEP 102.