[License-discuss] step by step interpretation of common permissive licenses

[David Woolley]

On 17/01/17 16:44, Massimo Zaniboni wrote:
> every change to A made by B is automatically owned by B author, thanks
> to Berne Convention

Not entirely true. Only significant changes are owned by B. De minis and 
obvious changes don't attract an independent copyright.

More generally on this topic, the requirement to include the copyright 
and licence in the permissive licences is only really codifying best 
practice.  That's especially true for open source derivatives, where the 
implied warranty that the supplier has the right to issue the end user 
licence, or even distribute the software, is being waived.