Nanjing Company owns a utility model patent for "an explosion-proof barrel" (hereinafter referred to as the patent involved). This barrel is mainly used to be installed in public places for emergency

2. The function of the lace is to prevent the explosion-proof barrel from being lost. Without the lace, there will be no anti-theft effect. Therefore, the lace is not a necessary technical feature, but dispensable;

There is something wrong with Nanjing Company's statement; since it has included exclusive rights, it is part of the scope of protection; it is not that he said that if it is not a necessary technical feature, it is not included in the scope of protection.

Beijing company’s products don’t have laces, so they don’t infringe.