[petek]

One Very Important thing you should do right away, if you haven't already:

Document your idea in words and drawings (if appropriate), sign and date it and get a witness to read, sign and date it. That way you can show when you came up with the concept. The US patent system begins with the premise of the first to document an idea (as opposed to first to file), so you want to have proof of when it was your idea in case someone else files for it too.