The petition of Serum Institute of India will be heard in the Supreme Court today. SII has challenged the amendment in the Income Tax Act. In fact, in 2016, a sub-clause was added by amending Section 2(24) of the Finance Act, 2015, which defines income. Serum Institute had appealed against this in the Bombay High Court, which was rejected by the High Court on 4 December 2023.