Legal analysis: As long as the utility model patent conforms to the provisions of the Patent Law, it will not be declared invalid; if it does not conform to the provisions, it may be declared invalid.
Legal basis: Article 45 of the Patent Law of the People's Republic of China * * * If any unit or individual thinks that the grant of the patent right is not in conformity with the relevant provisions of this Law, it may request the Patent Reexamination Board to declare the patent right invalid.