“…Authors' own elaboration based on Trajtenberg, 1990;Villa, 1990;Furman, et al, 2002;Gong, Keller, 2003;Hu, Mathews, 2005;2008;Huang et al, 2010;Sandu, Ciocanel, 2014;Boly et al, 2014;Kasa, 2015;Proksch et al, 2017;Lee, Rodriguez-Pose, 2013;Franco, Leoncini, 2013;Zeng, 2017;Wu et al, 2017;Zang et al, 2018;European Commission, 2018 a;Halkos, Skoloudis, 2018 Though innovation can "have various forms (product, market, process or social innovation), derived from diverse sources (closed vis-à-vis open innovation) and pertain to different scopes of change, i.e. disruptive, incremental or reapplied innovation" (Halkos, Skouloudis, 2018, p. 292), a lot of researchers use a popular approach to measure the output of innovative capacity by using patents or patent citations rate as a proxy (Trajtenberg, 1990;Furman et al, 2002), arguing that: Patents are the only observable manifestation of inventive activity with a well-grounded claim for universality (Trajtenberg, 1990); "Patents are intermediary results of the new product development process and are consequently indicative of the invention's activity and of research efforts" (Boly et al, 2014, p. 609); Nevertheless, despite the frequency of usage of patents and patent citation rate as the output of NIC, it gets a considerable amount of critique: Not every patent is used to create an innovation (Proksch et al, 2017); Modern technologies are not always distinctly proprietary in nature or granted with the patent right (Wu et al, 2017); "The use of traditional tools creates an innovation gap, so that actual innovation is higher than measured innovation, and the more economies are service-based, the wider the innovation gap" (De Liso, Vergori, 2017).…”