Are the FBX file extensions a safe value? After some research I saw that this is the best format for UE4. So if I’m going on a 3D asset site : turbosquid, cgtrader, artstation… and I’m buying a FBX asset, it’s 100% safe ? How to notice something wrong ?
How to notice that anyway ?
So, if I’m right, my question was about Patent Grant ? I need this to be “Yes” in order to keep my money from them ? 
(just buy their asset).
And, if I want to be fully free about :
- Linking (associate 2 codes at least),
- Distribution,
- Modification,
- Patent grant (keep all the money :p),
- Private use (keep the code for me or share it ?),
- Sublicensing (Attach my license or theirs ?).
I need these to be “Yes”, and it’s called FOSS (Free and Open Source Software) ?