How would I buy a patent?

Say I worked on an idea for two years...developed everything about it but after two years realized someone else has patented it 4 years before I even conceived it. This idea is not used by companies, the application I would be using it is not mentioned at all...I would need to buy this patent to use this idea, correct? How would I buy a patent, exactly?

 

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http://www.uspto.gov/web/patents/howtopat.htm

 

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But I do not need to file a patent...I need to buy one...

 

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Those are applications.. if they ok it you can buy it.

 

do you by any chance know what would it cost? a patent thats not really used by anyone?

 

I have no clue, sorry..

 

well thanks for that US site, really helpful.

 

Surely you can figure out that that will depend on what the holder of the patent wants for it? It might be very cheap and yet again he/she may want millions for it. No one can predict how the holder values it.

 

You're welcome.

Oh crap, I see what you meant now

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I misread..

You can probably find it on the site though.

 

What's your idea, draqon?

 

like I'll tell you...

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lets just say it has to do with Los Alamos

 

Face it, if it's going to sell in any numbers, you'll be manufacturing in China. So a patent isn't required.

 

my patent is not for manufacturing or mass production at all.