Courts, through which we have fought official government actions and federal or local laws, as well as official standards [NOMs due to its abbreviation by initials in Spanish] which affect the interests of our clients. Likewise, we provide legal advice and counseling related to concessions, tenders, administrative-law agreements and contracts, and in general, we give attention to the proceedings required to render null and void court orders which affect our clients, with the Federal Administrative-Law Tribunal and the Administrative-Law Court in Mexico City.