May our Dutch daughter company use Mindjet MindManager 2017 licenses which we have purchased in Germany?

Yes, the Dutch daughter may use the software licenses of the mother company, as long as the German mother controls at least 50% of the voting power of the daughter company. Since both companies are located on the same “applicable region”, this is not an issue for this case.

Source: EULA_Mindjet_MindManager_2017_English_2016-10-17