First of all, I want to say that my language used in the question might sound vague and incompetent, because it I'm not familiar with legal terminologies even in my native language.
I have an idea and product realization that is it sort of built on existing patent. It is a kit to build Google Cardboard VR. Kit is imprinted on a existing selling product package. Of course, by selling this product I make money. Google Cardboard kit scheme is free on internet for home assembling and manufacturing. I tried to find the licence of the Google Cardboard kit, but failed.
According to which US & EU laws, I'm allowed to incorporate this imprint on the package?
Is there a room for law suit for any kind of infringement, even if I just imprint the scheme and let people fold and assemble it themselves?