It is by Lomonosov, a Russian company :) The pattern is called Cobalt Net, although they have a lot of other designs in that same shade of blue. I have two other cups from them on my flickr, here (http://www.flickr.com/photos/90965908@N00/269081465/in/set-72157594327331139/) and here (http://www.flickr.com/photos/90965908@N00/269081412/in/set-72157594327331139/).
Got 'em all off of Ebay :)

"Run away or I shall taunt you a second time!"