Interlocking stones are found in nearly every ancient ruin.
Arches were not built using the methods shown, either; nor should they be. That's just plain idiocy on display. They haven't done anything special there.
And no... You can't patent stupid **** like that and expect it to hold water.
They can say it's patented all they want until a single person calls them on their ********. I doubt anyone will, though, because the technology is so far from ideal that it can't even be obsolete; it's just a waste of time.
Who wants such long arches, anyway? I've been all over the world, and I've never heard a soul complain about not having enough long, arched tunnels made of individual blocks.
The only thing I see in pictures is a truck that helps hold it all together, which they might think can be patented, but it's no different than a damned rolling arch support invented thousands of years ago.
So, they not only have nothing, but the "geometric fit" they're so proud of is nowhere
near as precise as civilizations who built superior arches with copper and bronze tools.