A Supreme Court panel resumed hearings Wednesday on petitions aimed at overturning the $475 million Bhopal gas leak settlement as more than 500 protesters demonstrated outside the courthouse demanding the accord be rejected.

The three petitions before the five-man panel of India's highest court contested as unconstitutional a 1985 law pushed through Parliament by Prime Minister Rajiv Gandhi's Congress (I) Party making the government the sole legal representative of survivors of history's worst industrial disaster.