Are applicants notified when their parent application is abandoned due to a CPA filing?

No, applicants are not separately notified when their parent application is abandoned due to the filing of a Continued Prosecution Application (CPA). This is implied in the examiner’s note in MPEP ¶ 2.35:

This notice should be given, since applicant is not notified of the abandonment of the parent nor is a filing receipt normally sent for a CPA.

The establishment of a CPA automatically results in the abandonment of the parent application. Applicants should be aware that by filing a CPA, they are effectively abandoning the parent application in favor of continuing prosecution through the CPA.

For more information on CPA, visit: CPA.

For more information on patent procedure, visit: patent procedure.