“…It is assumed that F1 holds patents for superior innovations on product quality. If F1 has an incentive to licence its technology, it will make a 'take-it-or-leave-it' offer based on a fixed-fee, a royalty rate, or at a constant marginal cost in quality (see, e.g., Baake & Boom, 2001;Tanaka, 2001;Avenel & Caprice, 2006;Banerjee & Margit, 2009;Bergantino et al, 2011;Zou & Chen, 2019). Second, firms produce with a fixed quality cost or zero cost (see, e.g., Bacchiega, Gabszewicz, & Tarola, 2007;Liao, 2008;Li & Song, 2009;Li & Wang, 2010;Inderst & Tirosh, 2015).…”