After being viewed as largely dormant since its inception in 2009, the Competition Commission of India (CCI) has had an eventful year-and-a-half under its present chairman, Ashok Chawla. The imposition of a hefty Rs 6,300-crore penalty on cement companies grabbed the headlines last year, but the CCI—whose job is to safeguard consumer interest by targeting companies who abuse their market dominance or set up cartels—is still fighting that out in the courts. In an interview with Lola Nayar, Chawla talks about the challenges ahead. Excerpts: