The authorization period of the invention patent is 2-3 years.
The authorization period of utility model and appearance patent is 6-8 months.
The patent law stipulates that the same technology can apply for both invention patent and utility model patent at the same time, so that you can get the authorization of utility model patent in about 6 months, protect your technology first and let the invention patent be examined slowly.
When the invention patent replies to the examination opinions, you will be asked whether to give up the utility model patent of the same technology, and then you can give up the utility model patent and get the invention patent certificate.
This has two advantages.
First, shortening the authorization period will allow you to exhibit your products as soon as possible.
Second, don't worry about other manufacturers copying your products.
Other manufacturers can't apply for patents or produce your patented products with the same technology.