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How Do I Put an Invention Into the Public Domain?
Nefarious Wheel writes "I have a couple of inventions — mechanical devices, based on physical principles — that I believe could transform certain aspects of industry. The trouble is, I can't afford to file patents, and even if I could, I'm not sure that would be the best way for these devices to be made available as widely as I'd like. Is there some way to publish the details of these innovations in the public domain in such a way as to protect them from being snaffled away by some patent troll? I'd be happy with a contribution (or simple attribution) model for recompense, which could be zero to whatever, but that's not as important to me as getting the ideas out there for anyone who wants to use them. This isn't copyright, and I know of no patent equivalent to Creative Commons. In short, what's the best way to protect an invention against someone filing a patent on it, short of patenting the device yourself? Can this be done?"
You could write an open letter to the major companies in the relevant industry (and make it clear that several companies are receiving the letter) explaining your inventions. One company may still try to patent them, but the other companies will have signed, dated, and carbon-copied letters from you stating prior art. Hmm, too far fetched?
Once they read about your invention, they would be legally obliged to disclose it to the patent office as prior art. So legally, they can't read it and then patent it. However since we are talking about patent trolls here, they can read it, write a patent application, don't tell the patent office about the prior art, forge papers demonstrating that they had the idea before you published it, and sue someone including yourself for the invention, and act very astonished if you show the prior art. Even with the prior art in someone's hands, it could cost them lots of money to defend against the case, even when they win. And whoever is sued might not know the prior art.
You could ask at the patent office, or someone here might know, how much it costs to _attempt_ to get a patent. In your situation, you don't need a patent. A failed patent application is good enough for you, because then it is prior art that is know to the patent office.
Even though you don't plan on turning this into a real patent application, it will establish a baseline date AT THE PATENT OFFICE for your invention. Someone else would have to prove that they invented before that date.
You will certainly want to publicize it widely, for it to count as prior art, but having an official date from the patent office itself couldn't hurt.