Productus gratiosus was named by Waagen (1884).

It was recombined as Productus (Dictyoclostus) gratiosus by Huang (1933); it was recombined as Productus (Marginifera) gratiosus by Licharew (1937); it was recombined as Marginifera gratiosa by Reed (1944), Fantini Sestini (1965), Termier and Termier (1970); it was recombined as Dictyoclostus gratiosus by Zhang and Jin (1961), Shimizu (1961), Yang et al. (1987); it was recombined as Alexenia gratiosa by Ruzhentsev and Sarycheva (1965); it was recombined as Gratiosina gratiosa by Grant (1976), Licharew and Kotlyar (1978); it was recombined as Asioproductus gratiosus by Yang et al. (1977), Tong (1978), Feng and Jiang (1978), Lee and Gu (1980); it was recombined as Transennatia gratiosus by Wang et al. (1982), Zeng et al. (1995); it was recombined as Transennatia gratiosa by Waterhouse (1975), Chang (1987), Tazawa (2001), Grunt and Novikova (2002), Shen et al. (2002), Shi et al. (2003), Niu et al. (2003), Chen (2005), Tazawa (2008), Tazawa (2008), Shen and Zhang (2008), Shen and Shi (2008), Shen and Clapham (2009), Chen (2009), Tazawa et al. (2015), Tazawa (2016), Tazawa and Araki (2017), Wu et al. (2022), Shi et al. (2022).