Rebecca Mammen John was designated as a Senior Advocate in 2013 and has been practising exclusively on the criminal side in the Supreme Court of India, High Court of Delhi and in the Trial Courts of Delhi for more than three decades. She has conducted a wide range of criminal trials and argued appeals dealing with offences under the Indian Penal Code, Unlawful Activities (Prevention) Act, Prevention of Corruption Act and other special statutes.
Over the years, she has represented accused persons as well as victims. She has successfully defended individuals accused of terror crimes in India including the Marxist ideologue Kobad Ghandy and a former student from Kashmir, Mohd. Rafeeq Shah, and is presently representing human rights activists in trials arising out of the 2020 Delhi Riots. Amongst the other cases to her credit are the Jain Hawala case of 1996, the 2G spectrum case, the Aarushi Talwar murder case, the Shreesanth IPL match fixing case, the Hashimpura massacre case – where she appeared for the families of 44 Muslim men who were shot dead by the Provincial Armed Constabulary of the Uttar Pradesh Police, in one the worst cases of custodial violence in India.
Rebecca Mammen John also successfully defended Priya Ramani – a journalist who had made allegations against her former editor during the #MeToo India movement in October 2018 – in a criminal defamation complaint filed against her. She has been appointed as the Special Public Prosecutor, in the Ankit Saxena murder trial – involving the brutal murder of a young man, for being in a relationship with a woman from another community. She is a member of the Internal Complaints Committee of the Delhi High Court dealing with complaints under the Sexual Harassment of Women at Workplace (Prevention, Prohibition and Redressal) Act, 2013. She is also a statutory member of the Delhi High Court Legal Services Committee.