Spanish to English Law/Patents Law: Patents, Trademarks, Copyright

In a description of an expert consultant's background and experience, I find this term. The person is described as: " Es consultor en temas de regulación de servicios públicos y de *defensa de la competencia*" He has written about "problemas de Defensa de la Competencia en servicios públicos 'There is also mentioned a "Comisión Nacional de Defensa de la Competencia de (país xx) " I think this has to do with anti-trust issues ... ¿What is the best way to say it this in English? Gracias. (PS I know this has been asked before...I'm trying to see if there are any new ideas. )