What is a patent application for packaging design?

An invention-creation for which a patent is applied is not necessarily a brand-new groundbreaking invention, and an improvement of an existing product or method can also be patented. Patents cover various fields, from machinery, electronics, communication, medicine, chemistry, biology, agriculture and forestry, from household appliances to spacecraft, from Chinese herbal medicine formula to gene therapy, from light-emitting diodes to supercomputers. It can be said that all inventions that do not belong to the following contents may become patents.