How can I appeal against the refusal of the recognition of my Italian citizenship iure sanguinis, for marriage or stateless status in Italy and which is the competent Court?

When instead the application has been requested after a two years marriage, because of direct bloodline, or for the recognition of the stateless status, the applicant has a real subjective right, to be necessarily enforced before the ordinary judge.

It is always possible to appeal on the behalf of the competent Trial Court, since this is an inalienable subjective right.