The package of the same drug has a patent number, but the other one has no patent number. How is this?

The same drug package has a patent number, but the other one doesn't. A patent can cover a variety of products. The same product may contain multiple technologies and apply for multiple patents. It is said that a smart phone has hundreds of thousands of patents. When the iphone4 was released, it claimed to have 200 patented technologies. Different patent numbers are normal. The same technology of the same product may also produce multiple application numbers. For example, when China applies for invention and utility model at the same time, the patent application is divided into cases, and the patent application based on domestic or foreign priority will produce different patent numbers. Patents and products are different dimensions. A patent can cover multiple products, and a product may also produce multiple patents.