Should new condo owner be responsible for back assessment legal fees?

My husband and I recently went into a contract for a condo unit in Chicago. It was a messy foreclosure that Freddie Mac owned. We recently received the condo assessment letter from the condo association, telling us that we will need $12,567 due at closing! Our attorney told us we would have to pay the six months of back assessments, which we are fine with. However, $9,700 is for ‘Legal Fees – Collections’.

When the invoices finally came, it's clear that a majority of the ‘Legal Fees – Collections’ are for appearances in court. We are under the impression that we should not be responsible for them. The following are examples of invoice charges: appearance; preparing correspondence to client ($355), prepare for plantiff's jury; prepare plaintiff's statement of the case and jury instructions ($470). Are we liable for the $9,700 even if majority of invoices are for appearances in court? These invoices date back to 2008!