It looks the same, but there are still differences in application.
Copyright protects the author's ideas and the expression of ideas. If the product function is expressed through packaging, you can apply for copyright.
Design patents protect specific shapes, colors, patterns, etc. It is also possible to apply for a packaging patent.
Relatively speaking, the design is more targeted and the guarantee is more comprehensive.
Design patents must be used, such as the appearance of wine bottles, which can only be protected in the process of wine packaging; But the copyright is different, which can protect all goods. For example, the appearance of this bottle used to hold drinks can also be protected.
The term of validity of the design patent is 10 year, and the copyright is 50 years. Copyright protection takes a long time.
However, in the case of litigation, it is easier to prove the design patent, while it is more difficult to prove the copyright.