Alonso Castellanos Armella

Associate, Mexico City



Alonso Castellanos' practice has focused mainly on administrative law and constitutional litigation including, among other areas, consultation and litigation in public procurement, antitrust, intellectual property, regulatory and telecommunications. He also has experience in transparency, data protection and access to information matters.

He has also participated in advising various companies of fixed, cellular telephony, Internet access, radio broadcasting, media and OTT services in regulatory compliance in matters of economic competition, telecommunications and radio broadcasting for their operations in Mexico.

Prior to joining White & Case in 2015, Alonso worked at a prestigious law firm in Mexico City and at a Public Notary Office.

Alonso has represented a large number of Pro Bono clients, including those who have promoted the Education Reform in Mexico, reading promotion associations, as well as museums and institutions focused on the cultural diffusion.

Bars and Courts
Authorized to practice law in Mexico
Attorney at Law (Abogado)
Universidad Panamericana


Representation of one, of the main mobile operators in Mexico against the rulings of the telecommunications regulator to determine interconnection rates with other providers of telecommunication services.

Representation of the Confederation of Potato Producers against the acts of the Mexican Government that allow for the importation of fresh potatoes in spite of concerns about sanitary measures and the environmental sustainability of potato production.

Representation of Aprender Primero, A.C., a Mexican NGO whose primary purpose is the promotion and defense of the right to education, in a constitutional trial against the controversial announcement by Mexico's Ministry of Education to suspend teachers' evaluations indefinitely. Teachers' evaluations are a key pillar of the government's education reform as well as a constitutional obligation to ensure the quality in the education rendered by public schools. The suspension of evaluations was widely interpreted by civil society groups as the government giving in to blackmail by certain sectors of the teachers' union on the eve of an election day, as well as a violation of the Federal Constitution. We challenged the suspension of the evaluations by means of a constitutional remedy ("amparo") and secured an injunction by a Federal Judge to order the continuation of the evaluations in light of the apparent constitutional violations. With this injunction, the Federal Court ordered the Government to retract the suspension and proceed with the evaluations.

Representation of a well-known antiques dealer in a Federal Court trial against the resolution by the Mexican Government denying the exportation of certain antiques whereby we secured the declaration that Article 33 of Mexico's Monuments and Archaeological Zones Law Rulings is unconstitutional.

Awards and Recognition

In 2016, Alonso was awarded White & Case Pro Bono distinction.