Leading practitioner Rogelio López Velarde commands a strong reputation among market commentators for his expertise in the energy field, particularly in relation to oil and gas matters. One client enthuses: "He is highly knowledgeable in the areas where my company requires assistance," while another notes that "he gives excellent advice." A source goes on to highlight: "What I really like about him is that he is fully specialised in this area. He is a very important lawyer in the Mexican energy sector." He is qualified to practise law in New York and spent several years working in the US.