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The only works that are truly original are by people who've never had any contact with other people. Every work has inspiration from other works, or ideas that are present in other places. Many exc...
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#3: Attribution notice added
Source: https://writers.stackexchange.com/a/18703 License name: CC BY-SA 3.0 License URL: https://creativecommons.org/licenses/by-sa/3.0/
#2: Initial revision
The only works that are truly original are by people who've never had any contact with other people. Every work has inspiration from other works, or ideas that are present in other places. Many excellent works don't even have novel plots. As for legal repercussions, "ideas" are not protected by law. Only the expression of the idea is protected by copyright. "Inventions" that do useful things can be patented, but unless they ARE patented, they are not protected either. So you're probably safe, legally, if you are writing your own work. IANAL.