> How effective are patents at protecting an under-funded inventor?
My own impression, "less than they used to be". I read patents from time to time, and there's a huge difference between, say, one of Tesla's patents for which he clearly wrote the application himself and a present-day patent, where the writing was clearly done by a professional unrelated to the technical field.
That said, I wonder how out of reach the self-filing route really is. My own patent cost me 2000 Canadian in consultant's fees, essentially to have them proofread my draft and make suggestions. I still had to have a bit of back-and-forth with the examiner, but none of it felt out of reach even today.
To my way of thinking, the whole idea of a patent hearkens back to a time when kings granted monopolies and the people getting them took care of the rest. It doesn't make much sense for an inventor today, who would ideally want everyone competing to execute on their idea. There are probably a lot of better alternatives to the patenting system that properly harness the tendency of data to be copied. Maybe some form of a value-added tax for getting into new business segments that automatically get remitted to the inventor? To no one's surprise, coming up with a better idea than the patent system isn't the hard part!