One of the biggest sources of open data is the patent literature. The patent related data reveals a significant body of information related to the innovation activities worldwide. The European Patent Office (EPO) is responsible for all patenting activities with pan-European scope and its databases integrate a significant body of patenting related information worldwide. For accessing this data the EPO provides an API to this data which is called Open Patent Services (OPS). We developed and released as Open Source a Ruby Gems which allows you to conveniently access the EPO API in all your Ruby applications.