Pérez Johnston Abogados, S.C. is a law firm with attorneys that have more than 20 years experience in providing quality legal services for national and international clients, and amongst them, there are corporations, financial entities and Government Agencies. Areas of Practice The firm specializes in diverse areas of practice, such as: administrative litigation en different areas and instances, constitutional litigation including amparo actions, constitutional controversies and unconstitutionality actions, human rights litigation, class action litigation international litigation and arbitration, as well as legal services in other areas such as intellectual property, health law, consumer protection, energy, telecommunications, public bids, public contracts, etc.