[Yale]

My understanding is that patents protect inventions, whereas copyrights protect the expression of ideas. If several designers create paper models of the same aircraft, we would expect to see some differences in the exact shapes of their respective pieces, variation in glue tab arrangements, and variations in the markings -- and that probably means that each designer could claim a copyright for his version. If you invented a new glue-and-clamp gizmo that made it easier to assemble paper models, that's where your patent would apply.

But there are great differences of law from one nation to the next. So if you have specific questions regarding your plans or models you create, you should present it to a specialty lawyer in your own nation. Best of luck.