Why doesn’t the USPTO send a filing receipt for a CPA?

The USPTO typically does not send a filing receipt for a Continued Prosecution Application (CPA). This practice is mentioned in MPEP ¶ 2.35, which states:

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 reason for this is that a CPA is a continuation of an existing application rather than an entirely new filing. The USPTO communicates the acceptance of the CPA through other means, typically in the first Office action on the CPA. This approach streamlines the process and reduces redundant paperwork.

For more information on USPTO procedures, visit: USPTO procedures.