Are there any law firms in chicago?
You will need to contact the Law Society of Illinois and inquire as to whether the specific lawyer who offered to represent your matter is a member in good standing. However there seems to be a firm matching your information at http://www.manta.com/coms2/dnbcompany_6pzqjq and http://www.monstersandcritics.com/news/business/news/article_1416531.