Ran has been discussed here before, looks great, good reviews as well, but serious questions remain about the legality.
US case laws have already established that it won't be legal to replicate the headstock shape.
Even without the logo it would still be trademark infringement. Also if it's just a one-off.
I don't know if EU law couldn't be used to prosecute them either.
But whether or not a particular luthier is bothered by this is a different matter. You could have a luthier make you an Ibanez spec neck and he could claim he was just customising an existing neck if Ibanez decides to go after him. It would be overkill to go after every single one-man shop, but an operation like Ran is a different matter.
Guitars body shapes, however, cannot be protected, neither as patents (only construction or production methods) nor as trademarks. PRS has won a lawsuit over this with Gibson.
Because they will be exact ibanez body specs.
Those who can recognise the shape should also be able to tell that it's not a regular Ibanez, or think it's just a refinished Ibanez.
If I were a luthier I wouldn't even want to make such a thing without putting my own special headstock on it and prominent logo, but it seems to work for Ran; they've been doing it for 10years and haven't been sued out of business yet. They don't appear to have updated their website in the last couple of years either.
What strikes me is that they will actually use a different Ran logo/font for each replica, matching the original font and such, see RAN with DEAN wings, Ibanez script logo, ESP /LTD font, etc. That alone should be grounds for legal action.