We report here on the synthesis and characterization of the macromonomer containing an ester-urethane linkage and marine mussel-inspired methacrylated L-DOPA units. FTIR and NMR studies indicated that the components were successfully obtained using respective synthesis protocols. Compositions prepared from individual components showed good injectability through 18 G needle. Furthermore, photocuring of the combination of these two components was performed to produce elastomeric films. According to the 90° peeling test and fluorescence microscopy, the elastomeric films obtained from the macromonomer with 5 wt.% and 10 wt.% methacrylated L-DOPA showed better adhesiveness compared to those prepared from the macromonomer alone. All discussed results showed the possibility of such an advance biomimetic materials production and a particular emphasis on their transformative potential usage in medical applications such as wound closure, bone repair, and as a sealant for internal bleeding where the injectability and adhesiveness are desirable features.