The national flag, national emblem and other graphics are not within the protection scope of the trademark law, but under the jurisdiction of the national flag law. In general, the national flag laws of various countries only limit the scope of use of national signs to whether the use of the signs is serious (for example, the national emblem of China cannot appear on underwear) and whether the appearance of the signs is complete and clear. In business situations, the national symbol can not be used as the main part of business activities, but can be used as an auxiliary element.

In some cases, the national football team may be related to business operations. In this case, the football team emblem may be registered as a trademark and used in some commercial occasions. As long as the team logo is registered as a trademark, it will be protected by the trademark law, but it is ok to use it for non-profit purposes in ordinary non-commercial occasions.

To sum up: there is nothing wrong with printing the national emblem on football, and printing the team emblem needs to examine the copyright status of each symbol. Of course, in practice, it is nobody's business for a small enterprise to produce tens of thousands of footballs.