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.
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.
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