The Sukhoi Superjet 100 features flight control system with characteristics copied from Airbus. Side-sticks, same control laws. But does it actually use any of the hardware or software from Airbus (under license), or is it an independent development based on detailed descriptions of the behaviour?
characteristics copied from Airbus
More precisely, copied from the package developed for Airbus by Thales.
Thales pioneered the development and certification of FBW technology on modern aircraft, starting with the Airbus wide-body A310 in 1983 followed by the A320 family (...)
To that regard, from an official brochure (PDF), the SSJ100's avionics are also provided by Thales. As for the flight control system, it's been developed by Liebherr (cockpit controls, computers, and mechanical components). (Cropped page below showing who has done what.)
Liebherr (headquartered in Bulle, Switzerland) has an official video about it on YouTube. Where the narrator says:
(...) Liebherr supplies the entire flight control systems from the various controls in the cockpit, to the rudder of the plane. More clearly, the aerospace equipment manufacturer designed joysticks, or here more properly called side stick controllers, in-flight computers, brake levers, pedals, and slats and flaps activation systems for the Russian regional jet (...)