Invention can be understood as creation, such as the first washing machine. It can be understood as an improvement, such as a drum washing machine. Design means literally.
The patent right is subject to the certificate. When you have patented technology, you should apply for a patent in time to avoid being preempted by competitors and causing unnecessary losses.
With the country entering the era of knowledge economy, there are more and more policies to protect and encourage patents. Pay more attention to the protection of individual intellectual property rights.
Generally speaking, patents have many benefits, not only products, but also professional titles, high-tech enterprises, independent enrollment and so on! If you don't understand, you can keep asking!
Intellectual Property Office of the People's Republic of China, official website, China National Intellectual Property Administration-Patent Management Department, etc.