The highest instance of the European Patent Office clarified in this decision that computer-implemented simulations are in principle patentable since they are directed to patentable subject-matter. Although such a simulation is effected on a computer and is thus based on software, it can produce a technical effect going beyond the simulation’s implementation on a computer. The assessment of inventive step should then be undertaken on the basis of the so-called COMVIK approach using the problem-solution approach. In this regard, only claim features which contribute to the solution of a technical problem should be considered, whereas non-technical features should be ignored.