Quote Originally Posted by Benoît99 View Post
This is very definitely a case of copyright infringement. The copyright, which came into existence at the moment the photo took tangible form, can be registered at any time even AFTER the infringement. The plaintiffs just have to be sure the registration is in place by the time they are heard by the court.
I'm not sure that is correct in the US.

In the US, if you have actually registered a physical copy of your image you are entitled to triple damages; with out the physical registration, the image is still copyrighted, but you are limited to actual damages - generally, the actual commercial use of that image.