If you only produce granular building blocks similar to Lego, with two rows of four raised dots on each, it is not considered an infringement. Canadian brand Mego successfully appealed to the European Union's Trademark Office in 2006, arguing that this granular building block should not become a patented product of any one company. The European Union's Office for Harmonization in the Internal Market (OHIM) ruled at the time that the raised dots on the surface of Lego bricks were just a function and were not used to identify trademarks, so it ruled in favor of Mega. Lego was dissatisfied and appealed to the European Court of First Instance, but the court on Wednesday upheld OHIM's original ruling and did not agree that the design, shape and model of Lego bricks gave it unique characteristics.

LEGO is just the best and the best among similar toys, and can even be called synonymous with this category. But just like a line in Stephen Chow's "The God of Cookery": "That's what competition is, just like swimming and running. He will do whatever you do." Other brands can be classified as follows:

1. If the color, style, and quantity copy a large proportion of the styles produced by LEGO, this is undoubtedly a copycat product.

2. It has its own unique style and creativity, but uses the form of particle building blocks. This is definitely not a copycat, and it is definitely its own distinctive feature.

You can say it is similar to LEGO building blocks, but it is definitely not a copycat. Calling it this way is disrespectful to the brand and creator.