Prepare the application documents first, you can write them yourself, or you can give them to an institution and then submit them to? Understand the patent application acceptance office. If it is a patent for utility model and design, it will be authorized after preliminary examination. If it is an invention patent, it may take 3-5 years to be authorized after substantive examination and novelty and creativity. After authorization, an annual fee is required to keep the patent valid. I hope I can help you.