<i>There is a specific defense for interoperability.</i><p>Which means absolutely nothing.<p><i>So yes, you might be able to use someone else&#x27;s design for something like a hose connector or an electrical plug but not improve on it - if you&#x27;re using their design to interoperate with their stuff.</i><p>Again, total nonsense. There are countless implementations of various development software out in the world right now that renders that load of extremely wishful thinking null and void.<p>Like I&#x27;ve said elsewhere, lawyers might think they can package these cases up into nice, neat boxes but they can&#x27;t.