As far as the product itself is concerned, it is possible to have novelty, creativity and practicality in both utility model and design aspects, and utility models and designs must be patented separately. In addition, Patents are regional. A patent should be applied for with different patent numbers in different countries or regions.
So, a patented product will theoretically have more than 2 patent numbers. However, two or more inventions or utility models belonging to a general inventive concept can be filed as one application; a design patent application should be limited to one design used in one product; used in the same category and in a complete set Two or more designs of products sold or used can be submitted as one application. In these cases, from the perspective of saving time and cost, generally one patented product only has one patent number.