Patent authorization only examines the patentability of the technology itself, and the recognition and protection of the technology or process does not mean that it can be directly produced and sold. For example, food (whether patented or not) still needs a license to be produced and sold. The competent departments of the two are also different. Therefore, no matter whether the food you produce is patented or not, even if it is a national secret formula, you must have a production license to produce it.