By Khaled granting you permission to register this channel, he would be directly responsible for any of your channel's ill-doings.

It's a pretty odd interpretation of the Common Law for a network to make. Especially since:

1. mIRC Co. Ltd declares that they don't run or endorse any networks or channels.
2. While "mIRC" is a trademark "#mIRC" isn't. So the associations can't be matched from a legal standpoint.
3. Every network that I know of has a #mIRC channel so the precedent for some sort of legal indemnity would already exist.

The way I see it, all #mIRC rooms are regsitered and owned without any permission being granted or needing to be granted.