1, the protected objects are not exactly the same: the utility model is mainly the protected product (including the shape, structure or combination thereof); Invention can not only protect products, but also protect methods (including processing and production technology, etc. ).
2. The review procedure is different: the utility model only goes through the preliminary review, not the actual review; In addition to the preliminary examination, the invention must also undergo substantive examination.
3. The utility model will not be made public until it is authorized; Inventions should be made public before actual examination and authorization. In other words, all published utility models are authorized; And the disclosure of the present invention does not necessarily authorize it.
In addition, the materials, expenses and application period required for the application of invention and utility model are not exactly the same.