Is it better to apply for a patent for invention or a patent for utility model first?

If you have two ideas to declare at the same time, you must declare the invention and utility model on the same day.

Otherwise, the patent applied for later will not be authorized.

The advantage of applying for the invention and utility model on the same day is that the invention requires high creativity and is difficult to authorize. At the same time, after applying for a utility model, even if the invention is not authorized, the utility model can obtain a certificate and the technology can be protected.

The disadvantage is that it costs more money.