The bar for patenting software is generally higher than for traditional technology. This is mainly due to the fact that “programs for computers” and “mathematical methods” are not considered to be inventions under a legal provision in the European Patent Convention (EPC). This is the intention of the legislator and a political decision. Nevertheless, it is possible to get a softwarepatent. The following chapters provides an insight into how software inventions respectively computer-implemented inventions (CII) are dealt with at the European Patent Office (EPO). The information is mainly based on the decision G1/19 of the EPO’s Enlarged Board of Appeal issued 2021. This decision is an all-out attack on CII and provides a good basis for an inside view into the software patenting at the EPO.