Curtis, I have an old friend who's patented dozens of things and he did them all himself. He swears it's dead easy to do. However, I've been told by others that it IS dead easy to do (and only $300-400), BUT, the problem is that you, or someone without patent experience will be writing it, while the big corporation with deep pockets will be putting a highly skilled, highly paid patent attorney on the case to find the loopholes. So essentially, they will find the way around it easier, because the loopholes weren't plugged by a person who knows how and what to do. It's like hiring an English Major to find grammar issues in something a 12th grader writes. If they want to find something, they can and will.
I don't know if any of that is true, but it's what I have been told. Take that for whatever it's worth. I'm sure some of the guys on here with first hand knowledge can verify if it's accurate.
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Real name Steve but that name was taken on the forum. Used Middle name. Call me Steve or Scott, doesn't matter.