Consumer tastes of the form of products (industrial designs) are different in each territory, nation, age, gender…, therefore, the manufacturer cannot use only one industrial design for one product, for example, a pink bag will attract girls, whereas boys will deny it despite low cost or convenience. In fact, the manufacturer always wants to sell as many products as possible, so the limitation of different consumer tastes of industrial designs should be addressed.

As mentioned above, manufacturers have to create many different industrial designs for one product, but the industrial designs must have same creative idea and must not significantly different from the others, the industrial designs meeting these criteria are called as plans of industrial designs. For example, the Air Blade 125cc of Honda has many types of colors such as red, blue, white, black…

Considering whether the different designs of a product are the plans of the same industrial designs for one product or not is the very important before filing the application because correct assessment will guarantee the industrial design application meet the criteria of synchronization as well as the protection, so the ability of granting the industrial design certificate for all the plans is higher, and this will bring more benefits for the owner when using the industrial design.