On another note, there were many artists incoperated within the Art Nouveau movement - not just Mucha, so it cannot be classified as solely 'Mucha's style'. However, Mucha's work does influence my own, as I have repeatedly said in the artist comments in nearly all my other pieces. My art isn't an exact replica of Art Nouveau, though it is strongly inspired by it.
At the end of the day, no one owns a single type of style. It's just art. Now if I'd exactly copied one of Mucha's work, that would be a different story.