Can I protect my rights by applying for a patent for utility model without authorization?

Not in principle. Because you didn't get the patent right, you can't defend your rights. However, utility models are generally authorized, so you can be prepared to protect your rights, such as ensuring that your patent will not be invalidated and excluding some unfavorable materials, such as those published before the application date that affect the novelty of the patent. Communicate if you have any questions.