In general, copyright covers ideas, words, and concepts that can NOT, by themselves, be made into a tangible product you can hold in your hand. The copyright on a story is the words and plot etc, not the book and pages it's printed in. You can copyright a brand new mathematical formula, but not the device created from the application of the formula. - E=MC2 is a copyrighted formula of Einstein's but the nuclear devices created from it's applications are not his.

A patent is a physical item that can be created, held, and used. As with the formula above, you can't patent the formula, but you can patent the device created by applying the formula. -- The nuclear bombs created from the application of Einstein's formula are patentable devices of the people who built them, not Einstein.
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That's the major division of copyright and patent in the real world, however the US laws and courts are off in a fantasy realm of their own in regards to patents and copyright, so it's hard to say what the courts will do in the US.