Nope, sorry. Under the Berne Convention under which 172 parties are included, "all works except photographic and cinematographic shall be copyrighted for at least 50 years after the author's death" and for photographic works it's either 25+ or 50+ depending on if/when it's shown. "Copyright under the Berne Convention must be automatic; it is prohibited to require formal registration" is a major component which applies precisely because at least some members (Europe comes to mind) believe that copyright is a natural right. Some countries, like the US, include further punishment (statutory damages) if registration occurs, and certainly registration can make a copyright claim easier to prove, but it's by no means a requirement. I've no idea what Greece does as far as registration, but they clearly are one of the signing parties. They may flagrantly ignore the rules, like some other countries have been known to (*cough*China*cough*).