Were all of these charges the result of a single incident, or did you get arrested three times?
Illinois, unlike some states, does not permit reduction of a felony conviction to a misdemeanor and does not permit any conviction to be expunged. Some Class 4 convictions are eligible for sealing but not Class 3s. That is the bad news.
The good news is that you may not have a conviction at all. Although you were found guilty, 550/10 probation completed is not a "conviction" under Illinois law. That might make your charges eligible to be expunged. Assuming that you are eligible for expungement, it is still up to the judge whether or not to grant it. That is why I asked whether this is all one incident.
Illinois expungement procedure was designed to be simple enough that one can navigate it successfully without an attorney. Sometimes it is, sometimes it isn't.. I think having an attorney is a good idea. In Cook County all cases arising out of the city of Chicago require a court appearance. Cases arising out of arrests outside of Chicago only require a court appearance if the judge orders one.
Speak to a criminal attorney in your area, as there are motions to seek reductions from felonies to misdemeanors, and expungements of misdemeanors as well; especially if the convictions are almost 10 years old. I truly wish you the best of luck in this matter! As an aside, if you found my direction helpful, and if you feel appropriate; could you be so kind as to designate my answer as the “best” answer to your question?
I agree with Attorney Sachs' answer. Only an experienced criminal defense lawyer can review and analyze the record in this case and then advise you of your options.
Of course, every answer is based on the question asked and requires a more complete context. This answer should not be relied upon to make a legal decision. Seek the advice of an experienced criminal defense attorney before acting. Law Offices of Raymond G. Wigell, Ltd. Defenders of the Constitution since 1975/ Aggressive Creative Defense Strategies/ Website: www.waaltd.com 24/7 --(708) 481-4800.
Your description of the events of your dispositions is not clear enough for any of us to give you a definitive answer. It appears as though your sentence was for Section 10 probation on the class 4, but a conviction on the class 3. If the charges came from the same incident it doesn't really make sense that they would impose Section 10 on some of the charges and conviction on the rest. You need to have an attorney review the actual dispositions. It is most likely that the class 3 was reduced and the sentence was for Section 10 probation on all of the charges, and upon successful completion of the probation and after waiting the time period thereafter you would be eligible for expungement. You need to have an attorney review the actual dispositions carefully.