Originally Posted by
Chippiewill
The developer who submitted the DMCA is actually well within his rights, all his work was done under the GPL license which means everything else in Bukkit needs to be GPL, including the parts which are part of the Minecraft server source code (Which are technically closed source). Bukkit is in copyright violation for one of two reasons:
a) They've been distributing Minecraft's source code under GPL.
b) They've been infringing the individual developer's copyright by not distributing it under GPL as required.
Mojang have a few ways to get out of this, either release Minecraft's server source code under GPL, replace all the GPL code and update the license, get the individual developers to change their licenses.