Can the inventorship in a continuation or continuation-in-part application differ from the parent application?

Yes, the inventorship in a continuation or continuation-in-part (CIP) application can differ from the parent application, but there are specific requirements:

1. For continuation applications: The inventorship must include at least one inventor named in the prior-filed application.

2. For CIP applications: The inventorship can change more significantly due to the addition of new matter.

The MPEP states for continuation applications: “The inventorship in the continuation application must include at least one inventor named in the prior-filed application.”

For CIP applications, the MPEP notes: “A continuation-in-part application that has a sole inventor may also derive from an earlier application that has joint inventors and discloses only a portion of the subject matter of the later application, subject to the conditions set forth in 35 U.S.C. 120 and 37 CFR 1.78. Subject to the same conditions, a continuation-in-part application that has joint inventors may derive from an earlier application that has a sole inventor.”

Any changes in inventorship must be properly documented and may require a request under 37 CFR 1.48.