Reasoning for a lack of unity objection 

An objection of lack of unity must consist of logically presented, technical reasoning containing the basic considerations behind the finding of lack of unity. If necessary, it must comprise considerations relating to the number and grouping of the claimed separate inventions.

The objection must identify the common matter, if any, between the different (groups of) inventions and provide reasons why the common matter cannot constitute a single general inventive concept based on the same or corresponding technical features. For each invention or group of inventions the reasons should specify the special technical features that make a contribution over the art. The objection must also include the reasons why the division examiner considers that there is no technical relationship among those inventions involving one or more of the same or corresponding special technical features. In particular, the reasons must highlight the technical problem(s) addressed by the different (groups of) inventions. When the objection is based on a document, the relevant passages are appropriately identified.

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