Really, just check the dates of the first a.net database photos:
It actually became official in feb04. Porbably, the article you posted says something about the legal name/structure of LAN, but the marketing and rebranding was announced in Feb, with the first public display in march.
Hope this helps. Regards )(
in order: 721,146,732,763,722,343,733,320,772,319,752,321,88,83,744,332,100,738, 333, 318, 77W, 78, 773, 380, 73G, 788, 789, 346