Whether it is difficult to apply for a patent and how long it takes depends on how you apply. If you don’t have any experience or find an unreliable black agent to apply under Baidu, it may not be a question of whether it is difficult or not, but whether you can get the certificate and whether the certificate you get has sufficient protective effect. Problem. As for how to choose a reliable agency, it is always right to look for one with official qualifications. For example, I entrusted it to the high-end intellectual property Dianzhiyuan, which has the formal agency license qualification of the Patent Office. With the assistance of such a reliable agency, I think applying for an invention patent is not difficult at all, and I successfully obtained the certificate in about two years.