> According to the law, a person isn’t entitled to a patent if the claimed invention already existed when the application was filed or would have been obvious to someone skilled in the relevant technology area.
This usually is completely overlook in patents. So, patents are ridiculous, they overlap and create a legal minefield for any small developer. Patent trolls exist because the patent system is so easily exploitable.
I am not against the concept of patents, I see the value of allowing some corporation to regain invested money. But, it needs to be for real inventions that took time and effort to develop thru costly processes. Meanwhile things like "one-click buying, is the technique of allowing customers to make purchases with the payment information needed to complete the purchase having been entered by the user previously" are accepted. Patents are a useless joke, at least in the software industry. And its only goal is to increase the power of already monopolistic corporations.