Not to reopen the whole debate again, I'll mention what I understand from a purely legal standpoint. People have argued this issue from a "moral" standpoint for quite some time, but the law is at least fairly clear in this case.
I believe there's something called the Berne Convention which covers international copyrights. Perhaps someone else can talk in more exact detail about this, but the basics of the Berne Convention as I understand them is that any participating country's copyrights are considered valid in
all participating countries unless superseded by another rights agreement. I know both the USA and Japan participate in this, but I'm not sure about Serbia... if so, that means that the original copyrights of all Japanese material are considered legal and valid until a deal is struck for the rights to distribute in Serbia.
So yes, all "unlicensed" anime fansubs and other such distribution (via tape, DVD or digisub Divx files) would be considered 100% illegal. However, in terms of fansubs in the USA, most Japanese and American companies tended to ignore the fansubs as they did help develop the current market for anime/manga here. Now I think the situation is a bit different, as anime is a larger business... but for the most part the companies still tend to turn a blind eye to these activities.
Bear in mind, though, that this can change very quickly... part of this tolerance has to do with the fact that there really hasn't been a challenge of the copyrights either. I'm not a legal expert, but my understanding is if a copyright holder is found in court to have knowingly allowed "illegal" or "bootleg" versions of their material to exist, that's equivalent to proclaiming that they relinquish their rights. I think the market for fansubs is still small enough that companies could pretend they didn't know if the issue ever came up, but if fansubs ever became too big or high-profile to be ignored, the rights holders would have to defend those rights in order to keep them.
Of course, places like Taiwan are known for their bootlegs, and this is due to the fact that they don't participate in the Berne Convention. Therefore, international copyrights are considered "not applicable". Like I said, I don't know where Serbia fits into this, so that's probably worth checking out.
Anyway, that's my understanding of the situation... but like I said, I'm not an expert in this. I've just heard the arguments many times before. Anyone with more knowledge in these matters can feel free to correct me if I'm wrong. Also, this talk is purely about legality... the "moral" issue (fansubs may or may not have created the international market for anime and thus are good/bad for the business of anime in general) is a lot less clear.
Hope this helps, and sorry for being so long-winded... and nice to meet you!