During the process of applying for a Patent, an inventor may determine that what has been filed could be considered more than one patentable idea. After the USPTO has issued its final rejection, an inventor may still believe that the application that some or all of the application merits a patent. The USPTO has several processes that that these situations into consideration and these are described below.
A Divisional Application is used when the inventor determines, during the prosecution of a patent application, that an independent or distinct invention can be carved out of the application. In order for the divisional application to be valid, the divisional application must claim the benefit of the prior nonprovisional application and can only claim subject matter disclosed in the earlier application.