An interesting topic! I think this will be a tough question but for the current AI tech I will be more inclined to saying no. The reason is AI learns from experience and finds pattern from the training data. They just basically copy other artists' ideas. You may say human is the same. But AI has a systematic way of copying from experience, but humans do not (at least now since we dont fully understand our brain). So probably copyrights are currently not necessary for robots.
RE: Newslink: Should robot artists be given copyright protection?