Oil company Exxon Mobil, the biggest intergrated oil company in the world, has faced payment damages to more than 10,000 petrol station owners for overcharging on the cost of its fuel.
The US company is to pay back more than $1.3bn.
Exxon was told it would have to pay damages to dealers who bought supplies from it between 1983 and 1994.
A spokeswoman for Exxon said the company would appeal against the decision.
"We were seeking clarification on a number of legal issues that we thought were not resolved by the appeals process," the spokeswoman said.
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Exxon Must Compensate For Damage
Oil company Exxon Mobil, the biggest intergrated oil company in the world, has faced payment damages