The interdisciplinary project DIREGA aims to analyse the joint application of linguistic, symbolic, and sub-symbolic AI techniques to German register law. This analysis is based on a dataset consisting of all past applications, related documents, and decisions of German register courts in the Free State of Bavaria. Corpus queries and sub-symbolic AI methods will be used for information extraction which then instantiate facts for the symbolic reasoning pipeline based on a manual formalization of the relevant laws. The goal is to build a prototypical implementation checking register applications and providing a detailed explanation for acceptance (or rejection) to aid legal professionals such as notaries in drafting and reviewing such documents.