(1) The original claim contains two or more inventions that do not meet the requirements of oneness.
(2) The independent claim added or replaced in the revised application document is inconsistent with the invention in the original claim.
For example, after searching and examining the application including product, manufacturing method and use, it is found that the product is known, and the remaining independent claims of the manufacturing method of the product and the independent claims of the use of the product obviously cannot have the same or corresponding specific technical characteristics, so it needs to be revised.
The division of the above situation can be the applicant's initiative to request a division, or it can be the applicant's division according to the requirements of the examiner. It should be pointed out that the filing of the divisional application is the voluntary behavior of the applicant, so the examiner only needs to ask the applicant to change two or more inventions that do not meet the requirements of oneness into one invention, or to change them into two or more inventions that belong to a general invention concept. As for whether to file a divisional application for the modified remaining inventions, it is entirely up to the applicant.