“…I employed forward patent citations (i.e., patent citations received) to proxy innovation performance, considering the usefulness of patented inventions and their impact on future patents as a manifestation of the importance of the innovation outcome (Anzenbacher & Wagner, 2020;Onal Vural et al, 2013;Papazoglou & Spanos, 2021). Forward patent citations, compared to a raw count of patents, offer a qualitative measure of innovation output in addition to the quantitative (Magelssen, 2020;Rothaermel & Alexandre, 2009;Rothaermel & Hess, 2007;Yayavaram & Chen, 2015). Besides, the validity of patent citations as an indicator of the quality and importance of innovations has been empirically supported by "the correlation between the inter-subjective assessment of the importance of patents by technical specialists and the number of citations" (Hagedoorn & Cloodt, 2003, p. 1369.…”