«Every system or category of copyright or patent should prove its worth» illustrated quotation. Copyright, free quote pictures for Facebook, Twitter, LinkedIn, Reddit, Pinterest and other social networks.
Every system or category of copyright or patent should prove its worth
This does not mean that every copyright must prove its value initially. That would be a far too cumbersome system of control. But it does mean that every system or category of copyright or patent should prove its worth.
Every system or category of copyright or patent should prove its worth