First of all, you have to know a premise. All utility model patents can be declared inventions, but not vice versa. Then you may ask, why do others still declare utility models instead of inventions? Aren’t inventions more valuable than utility models?
Because, first, the technical method of the invention patent needs to be announced, that is, to let everyone know that this technology was invented by me, and in this way it will have a protective effect. Some companies cannot publish their methods, but they want to protect them, so they can only choose utility models.
Second, utility model application is simple, low-cost and has low annual fees.
Okay, after finishing the premise, let me explain the difference between inventions and utility models
The so-called invention patent can be a technology, method, or even an idea.
For example, a Western medicine formula can be applied for an invention patent.
The so-called utility model patent refers to a structure. Therefore, when writing a technical briefing document for utility models, drawings are usually attached. For example, the design drawings of a machine can even be a partial modification. Just like the mouse you mentioned, it has evolved from a mechanical mouse to a mechanical mouse. Optical mouse. Just because of the change in the sensor, the optical mouse can be defined as a utility model patent, but at the same time it can also apply for an invention patent.
The above is a purely professional understanding of hand typing. If you don’t understand, you can consult me