Do I have to write a copy of my invention and apply for a patent for invention and utility model at the same time? What should I write in the application materials? Official expenses ...

If you apply for a patent for invention and a patent for utility model at the same time, you must write one copy each (if it is a product invention, the claim and specification of the application for invention and the application for utility model can be the same, but the form of the request is different).

The official expenses are calculated according to oneself. (Invention: application fee 900, printing fee 50, utility model: application fee 600. If the application for fee reduction is submitted separately, the application fee is only 15% for the individual and 30% for the unit).

Special emphasis! ! ! !

The application statement of invention patent request (column 2 1) and utility model patent request (column 18) on the same day must be selected, otherwise it will be a disaster and cannot be remedied in the future.