http://media.ccc.de/browse/congress/2014/31c3_-_6043_-_en_-_saal_2_-_201412291830_-_the_maker_movement_meets_patent_law_-_natalia_lukaszewicz.html

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.

Natalia Lukaszewicz