Where an insurer denied coverage and failed to defend the insured, the insurer was later estopped from asserting policy defenses to indemnification.The 7th U.S. Circuit Court of Appeals affirmed a decision by U.S. District Judge Samuel Der-Yeghiayan.Chicago Abstract was a title insurance agency operating in Cook County. Chicago Abstract was an agent for First American, providing property owners and lenders with real estate closing, loan closing and title and escrow services.In 2008, Title Industry Assurance Co. R.R.G …