There are endless examples of this because ideas are not scarce and there are typically multiple intelligent people who have the same idea. All patents do is allow somebody who fails to successfully execute an idea to weaponize the legal system to extort money out of people who do successfully execute "their" idea.
That's not even getting into how the US Supreme Court allows GMO seed companies to patent plants and sue farmers for patent infringement because the neighboring farm's GMO seeds cross-pollinated with their seeds. In Bowman v. Monsanto, the US Supreme Court actually ruled that farmers can't plant their own seeds (when this cross pollination happens) without paying the patent trolls at Monsanto! Patents are simply corrupt, innovation stifling monopolies the entire way down and should be completely abolished and banned from ever coming back via constitutional amendment.
(Current copyright terms are excessive but copyright itself along the lines of the US Copyright Act of 1790 is reasonable as a tool to encourage creative works and copyright abolition would likely be even worse than the status quo's century long copyright terms. Likewise, trademarks are also legitimate as a fraud prevention tool. They shouldn't be conflated with patents as they are in the concept of IP.)
