Why do you want to apply for an invention patent? Can the success rate of authorization be 100%?

The authorization rate of applying for invention patent can't be 100%, because there are many uncertainties in patent examination, which can't be controlled. This is hard to say. For example, if you can't get a full refund on the websites of some patent firms, you won't dare to take any cases. It depends on your technical field and technical data. Therefore, if anyone pats his chest and tells you that 100% is authorized, it is absolutely a lie. I hope my answer can help you.