How does the inventorship in a CPA differ from the prior application?

The inventorship in a Continued Prosecution Application (CPA) is generally the same as in the prior application, unless a specific request is made to change it. According to 37 CFR 1.53(d)(4):

The inventive entity set forth in the prior nonprovisional application automatically carries over into the CPA UNLESS the request for a CPA is accompanied by or includes on filing a statement requesting the deletion of the name or names of the person or persons who are not inventors of the invention being claimed in the CPA.

If a change in inventorship is desired, a statement requesting the deletion of the names of non-inventors must be filed with the CPA request. This statement must be signed by a person authorized under 37 CFR 1.33(b). For applications filed on or after September 16, 2012, any request to add an inventor must be in the form of a request under 37 CFR 1.48.