Increase in compliance costs, growing number of M&A deals and rise in litigation are fuelling India Inc's legal and professional expenses. Sun Pharma tops the list of legal spenders, as it has been grappling with regulatory issues in the Ranbaxy acquisition over the past two years. Reliance Industries has seen its legal expenses rise by 50% in FY16, largely due to its ongoing spat with ONGC. Pharma and information technology companies were among the largest spenders on legal services