In the Illinois Supreme Court’s temporary home in the Bilandic Building, the seven justices honored Thomas P. Sullivan this week with the George N. Leighton Award. A lawyer at Jenner & Block LLP since 1954 and a former top federal prosecutor in Chicago, Sullivan has spent the past 59 years working civil and criminal cases at various court levels. Given annually by the high court’s Historic Preservation Commission, the Leighton Award celebrates the achievements and impact on law and society by …