Whether the router is made well or not requires programming. Is technology a patent?

First of all, the router is made of integrated circuit and controlled by single chip microcomputer. It needs programming to develop its own router technology, but there are also some ready-made router control systems in the market.

As for patents, I can tell you that there are many patents about routers, all kinds of patents, but not every technical point has a patent. Based on the non-patented existing technology, a fully functional router can also be made.

Also, if you just do research, don't worry about patent issues, you can use it at will.

I hope I can help you!