On 15 April 2011, a two-judge bench of the Supreme Court — Justice R.V. Raveendran writing — supplied the first authoritative analytical framework for arbitrability under the 1996 Act. The judgment installed the in rem / in personam taxonomy, enumerated six classic non-arbitrable categories, and held that a suit for enforcement of a mortgage by sale under Section 67 of the Transfer of Property Act 1882 is non-arbitrable. Booz Allen is the foundational anchor on which Vidya Drolia's four-fold test and Cox & Kings's group-of-companies doctrine were later built.
On 14 December 2020 a three-judge bench of the Supreme Court, in Vidya Drolia v. Durga Trading Corporation, restated and tightened the in rem / in personam taxonomy of Booz Allen into a structured four-fold test for non-arbitrability, held tenancy disputes under the Transfer of Property Act arbitrable, overruled N. Radhakrishnan on the arbitrability of fraud, and recalibrated the standard of judicial review under Sections 8 and 11 in favour of competence-competence. A close reading of Justice Sanjiv Khanna's lead judgment, Justice Ramana's concurring opinion, the doctrinal architecture and what the bar should plead in the post-Vidya Drolia world.