Great question. The short answer is it's complicated, varies by country, and there's over a century of case law with which to reference. Here's where you proba

Great question. The short answer is it's complicated, varies by country, and there's over a century of case law with which to reference. Here's where you probably want to get started. http://en.m.wikipedia.org/wiki/Idea–expression_divide http://en.m.wikipedia.org/wiki/Idea–expression_divide