The Maker movement and patent law are like two planets moving on the orbit of innovations. Occasionally, they collide … because the Maker planet moves too fast. But, back on the Earth. Encounters with patent law can be of many reasons, e.g. filing a patent application or being blocked in making by a patent (or much worse, being accused of a patent infringement). The latter motivated the question of the permissible uses of patented inventions. The talk explains which activities on patents are lawful and keep Makers safe in their making.