The document discusses several approaches for valuing patents, including the cost approach, market approach, and yield approach. It focuses on the yield approach, also known as the license analogy approach, which values patents based on estimating potential royalties from licensing agreements in a similar way to how employee inventions are valued for remuneration in Germany. The license analogy approach involves determining an appropriate royalty rate and base and then calculating the net present value (NPV) of expected royalty cash flows over the lifetime of the patent.