Blockchains are at the source of numerous innovations, be it in the insurance, the financial or the distribution sector, many of which are very promising. However, from the moment innovative technologies appear the issue of the stimulation of their development arises. Most of the time, blockchain-related innovations are developed in an open-source or free software framework. Nevertheless, more and more patents have been filed on blockchain applications. Hence, how are the philosophies driving blockchain communities and intellectual property compatible? Are there any risks that arise from the filing of patents on the developments of blockchain-based technologies and business methods? And finally, are blockhains going to revolutionalize the intellectual property system itself? These are the issues that the present chapter attempts to deal with.