[citation][nom]tului[/nom]You can copyright a mace? In a game? Seriously? Adding the graphic for one mace to another game isn't considered fair use? Maybe if it is the ultra ueber mace that Aion uses in all it's commericals, and even then I'd think it should be fair use. A fscking mace. If this isn't another clue we need to rework copyright law, I don't know what is.[/citation]
1) Distinctive art assets are considered intellectual property and thus, copyright.
For example, the fireman's axe is NOT distinct, so any game developer can use the art of a fireman's axe in any game. But start with a fireman's axe then, for example, color it black, add a few more spikey bits and draw glowing runic symbols all over it and call it the "Sacred Axe of Malice" and it becomes distinctive enough to warrant copyright.
In this case, that item happened to be
Aion's "Marchutan's Blessed Mace".
2) The article fails to mention that "Sithil's Summer Stash", the way to get this mace, was
sold on Steam, and the banned modder would have been granted a cut of these sales. In short, Valve unwittingly sold the art asset another company owned because their community approved an art asset they shouldn't have.
Btw, the above info was taken from the more detailed post on The Escapist.
http://www.escapistmagazine.com/news/view/119006-Valve-Drops-the-Hammer-On-Infringing-Dota-2-Mace