That part looks to be removable, I would assume that the leather was installed on the part, then installed onto the handle... if it can be removed it can be fixed.
I wouldn't waste my time with that; it's obviously not a defect, so no way it'd be covered. Leather is scuffed, probably by weird finger jewelry, as mentioned; can't be anything else IMO. Looks like the maxipad is glued on, but doubt they're sold by themselves. Not sure a leather refinisher can do anything about that in place. And if removed, it'd probably be ruined. Curious how the OP fixes it.If the car is still under warranty take it to the dealer and complain.
Just found out the answer you need: http://www.planet-9.com/981-diy-discussion/197666-leather-door-pulls.html#post1800474i wanna know if i can replace it or not