The Supreme Court today will hear the petitions filed by Congress and Janata Dal (Secular) against the Governor Vajubhai Vala's decision to invite BJP and BS Yeddyurappa to form the government in the state. A bench of Justices AK Sikri, A Bobde, and Ashok Bhushan will also examine the letters, dated May 15 and 16, submitted by BS Yeddyurappa to Karnataka Governor.