An advocate, the founder of the law firm Lakshmikumaran & Sridharan, specialising in Indirect Taxes (Service Tax, Excise & Customs, Sales Tax), W T O Agreements (Market Access, Anti- dumping, Subsidies & Countervailing measures, Safeguards) Intellectual Property laws(Trade Marks, Copy rights) and Corporate Laws.

For the past 20 years, he has been actively involved in tax litigation in various judicial for a both in India and abroad. Mr.Lakshmi Kumaran, a prolific speaker, has been regularly delivering lectures on various legal issues in premier institutions in India and abroad.

He also has a number of publications on taxation to his credit.

Ardent supporter of philanthropy, social and religious activities.