Alfonso has experience in the areas of Intellectual Property, Personal Data Protection, Domain Name Disputes, and Anti-Piracy. His practice focuses on trademark, copyright, privacy and personal data, intellectual property litigation, anti-piracy criminal proceedings, Domain Name Dispute Resolution proceedings, and constitutional litigation.

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He has been involved in complex trademark and copyright litigation on behalf of major telecommunications, art, pharmaceutical, and finance companies worldwide. His expertise includes the administration and maintenance of trademark portfolios in Mexico and internationally, as well as the organisation and execution of anti-piracy campaigns, trademark counterfeiting investigations, and seizure of counterfeit products.

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Alfonso was Mexico's representative in the Jean Pictet Competition of International Law in Obernai, France, and has been a speaker and participant in several seminars and conferences on intellectual property in Mexico, Bolivia, the United States, France, and Germany.

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He is currently a professor of Intellectual Property at the Law School of the National Autonomous University of Mexico and has previously served as an assistant professor in the subjects "State Theory," "Private International Law," and "Public International Law" at the university, as well as an assistant professor in the subject "Contemporary Problems of International Law" in the PhD Programme of the Instituto de Investigaciones Jurídicas.