If you have an idea on how to do something or an idea for a product, you need to apply for a patent, copyright law is not in play. If you are serious about it, you need to contact a patent attorney to get some help through the patent process. Its not cheap, and it can take a while, but ultimately it can net you a lot of money if you really do have a good idea.
Copyright law is meant to protect an expression on ony kind of media. For example, if you write a program, you can copyright it to protect it from being used by someone else as their own or without your permission. Patents are meant to cover an idea, a way of doing something or an invention. For example, if you build a new engine that runs on air, you can patent it. If you write an article about your engine, you would copyright that article.