Callisthenes:Patents don't protect ideas (let alone claim ownership of a mind); they protect novel and useful methods, processes, compositions of matter, etc. that have been explained in a concrete way.
And they do that by making it illegal for anyone who has an idea deemed similar enough to the original to make their own product. That is, they effect a state of legitimized control (ownership) by the original inventor over any content of others' minds which pertain to that idea.
And it's not even necessarily the first person to come up with it - it's the first person who has the idea and simultaneously has the capital and/or political pull to jump through a bunch of arbitrarily established legal hoops to get the right to exclusivity.
In a more practical sense, patents illegalize competition over the production of that invention. They guarantee profit to the favored party (who is by no means neccessarily the best qualified party) in exchange for jumping through legal hoops, whereas in the absence of patents people compete on the basis of excellence in providing that product or service. They are a legal barrier to entry into the market which encourages those things which you liberals hate oh so much - MONOPOLIES.
Copyright and trademark laws are legitimate because they defend original producers against fraud, and because they deal only with the ownership of material, scarce resources and not with the immaterial realm of ideas.
Your rhetoric may be pretty, but it doesn't really make sense.
It results in more incentive for efficiency in production and innovation in development. Which makes perfect sense unless you just hate low prices and quality products.
A title of insurance can't prove that an invention is valuable. The invention will be valuable to the manufacturer if it can make a profit off of it, and that depends on a lot of factors.
The inventor could just go to the manufacturer himself and make a presentation. The role of the insurer is partially to warrant to the manufacturer that the idea is worth the price for which the inventor is asking (which they would help determine), without which promise the manufacturer would have less incentive to accept the deal. But their primary role is to help protect the inventor against the manufacturer reneging on their part of the deal.
A manufacturer wouldn't pay for an invention as though it were patented. It would pay for the invention as though it were going to be reverse-engineered and sold by other manufacturers in short order.
Only if they're idiots. If they are competent, they will build in safeguards against reverse-engineering, and they will agree to the exclusivity contract for a period of time reflecting their confidence in those safeguards. As usual, you imagine that businesses in a free market would act like government bureaucracies.
In other words, you're not accomplishing anything by introducing this contract and invention insurance.
What this idea would accomplish is the replacement of state protectionism with voluntary contracts. But I know how much you loathe the idea of solving problems through peaceful means, so I don't expect you to support it.
Pro Christo et Libertate integre!