Not all players enjoy their builds being copied in multiplayer, I think a system like the one that is in place for scheming a building would work perfect for protecting buildings from being copied. It would be great if users could add others as their friends (different from team), so that only they can copy their structures if wanted.

While we are here, some kind of 'chunk claiming' and 'land protection' might go well with this feature.

I don't see a major need for protecting intellectual property in a sandbox game. If someone likes your design and uses it, you should be proud and feel honoured! =)
If you're looking for world protection and claims in general, there are plenty of server plugins and mods out there already. Have a look at FTB Utilities for example.

I replied on #29 :)

@simibubi
Alright imagine this:

You come to your small friendly server and someone (maybe some kid), just because thought it was funny, scanned a mountain, put a chest beside a Schematicannon, put all of their stone which came from mining in it and build a mountain on top of your house with little to no effort whatsoever.

Please add another 'Paper and Quill' item which when in hand, allows you to created a prohibited area for scanning. Only you have the control to disable it temporarily to scan something and then you can re-enable it for protection. People cannot create or scan anything in those areas. Forget chunk claiming, this is much more realistic and requires effort on players behalf, it's not just a click and bam, you have claimed a 16x16 worth of block for any height anywhere on the map.

Please please please, this is really necessary.