Born and brought up in Hong Kong, Mohan studied at Sir Ellis Kadoorie (AM) School and St. Joseph’s College before undertaking legal studies at the University of Hong Kong.

He graduated with a Bachelor of Laws degree and then took his Bar Exams in London, where he was called to the Bar at Lincoln’s Inn. On his return, he was called to the Bar in Hong Kong in1978 and he has practiced here ever since, as Counsel and later as Senior Counsel, for over 30 years.

In 2010, he was appointed a Judge of the High Court of Hong Kong and was made the Judge in charge of the Personal Injury from 2010 up to the present, and also the Judge in charge of the Commercial List from 2012 to 2014. He was also appointed as Panel Judge under the Interception of Communications and Surveillance Ordinance from 2014 to 2020.

In 2020, he was awarded the prestigious Silver Bauhinia Star in recognition of his meritorious and dedicated service to the Judiciary and Hong Kong community.