Chicago Criminal Defense Attorney

Chicago Criminal LawyerIf you or a loved one has been charged with a crime, you need an experienced Chicago criminal defense attorney on your side. With over 20 years experience, former prosecutor Gus Kostopoulos will aggressively protect your freedom.

Before becoming a criminal defense attorney, Gus served as an Assistant State’s Attorney. As a prosecutor, he rose to the position of First Chair of a courtroom, where he was in charge of a team of prosecutors and handled thousands of cases. Gus uses this experience to help his clients achieve the best possible outcome.

Gus Kostopoulos – Chicago Criminal Lawyer with 20 Years Experience

If you’ve been arrested or under investigation in the Chicagoland area, then call our law firm today to find out how we can help. We handle all criminal matters ranging from misdemeanors and DUI, to felonies like sex crimes and homicide. We are available throughout Cook County and Illinois.

After an arrest, you may feel like you’ve lost control of your life. Gus can help you get your life back by protecting your rights and attacking the prosecution’s case against you. Call us 24/7 for a free consultation.

How a Former Prosecutor Can Help Protect Your Freedom

As a former prosecutor, Gus has knows how the prosecution builds a case against you. He knows how they investigate your case, the tactics they use to pressure you into accepting a plea deal, and more importantly, what shortcuts they take. This allows him to challenge every aspect of the prosecution’s case against you.

Gus prides himself on an aggressive pre-investigation process. His goals is to minimize the charges or get them dismissed altogether. Instead of giving the prosecution time to build a case against you, Gus starts working on your case from the moment you hire him. From day one, he

  • Reviews the evidence,
  • Reaches out to the detectives investigating your case, and
  • Uses his own team of investigators to challenge any evidence collected by the prosecution.

Visit our Chicago, IL Criminal Law Office

Kostopoulos Law Group is located at 125 Wacker S Wacker Drive Suite 300 A, Chicago, IL 60606.


Free consultation – 24/7
Call 855-594-6529

Recent Victories


Practice Areas

Recent Case Results

Cook County Court: Client charged with domestic battery. During cross-examination, Gus was able to show that the accuser’s testimony was not credible. RESULT: The court ruled for our client and dismissed the case. TRIAL VICTORY.

Cook County Court: Our client was charged with distribution of a controlled substance. Our client was facing a lengthy prison sentence and steep fines. RESULT: After a lengthy trial, the court returned a NOT GUILTY verdict. TRIAL VICTORY.

Cook County Court: Client charged with DUI. Our client was accused of causing an accident, failing all Field Sobriety Tests and blowing more than twice the limit (.186). Gus challenged the breathalyzer results and pointed out the errors in the field sobriety test. RESULT: Found NOT GUILTY at trial. TRIAL VICTORY.

Defense Attorney with Trial Experience

If your case must go to trial, then you need a lawyer with a proven track record of trial victories. Both as a former prosecutor and criminal attorney, Gus has established himself as a successful courtroom litigator who can take a case before a jury and win.

His courtroom skills serve you well in and out of the courtroom. This is because the prosecution is more likely to offer a favorable plea agreement if they know that you’re represented by an experienced litigator. Don’t face criminal charges on your own. Find out how we can assist you so you can get back to your life.

When facing criminal charges, the quality of your legal representation will impact the outcome of your case. Kostopoulos Law Group will use its unparalleled experience to help you achieve the NOT GUILTY verdict you deserve.

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Gus Kostopoulos, Chicago Criminal Lawyer

Attorney Profile

Gus Kostopoulos is an experienced attorney who has successfully litigated thousands of criminal cases. He has earned a reputation as a tough attorney who achieves outstanding results.

Experience you can trust

Aggressive Pre-Trial Strategy

We begin to work on your case from the moment you hire us. That includes:

Investigating the crime scene
Using our private investigators to collect evidence and interview witnesses
Reach out to the detective investigating your case
Communicate to with the prosecutor’s office to have the charges reduced or dismissed

What our clients
are saying

How Does Hiring a Top Rated Attorney Help You?

After an arrest, the most important thing you can do is to hire an attorney to protect your freedom. One of those rights includes the right to remain silent. By protecting your right to remain silent, your attorney forces the prosecutor to prove their case against you. Don’t let the police and prosecution build a case against you based on your statements. Remember, you are innocent until proven guilty.

As a former prosecutor, Gus knows the evidence and experts the prosecution will use against you. You can rest assured that Gus will aggressively attack any so-called “expert” opinions the prosecution attempts to use against you.

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National Trial Lawyers

Criminal Cases We Handle

Gus has over 20 years experience handling all criminal cases. We provide more information on the more common cases we see in our office. If you need assistance with any criminal matter, call us 24/7 for immediate assistance. Don’t speak to the police until you’ve spoken to us. The police are not on your side. They have one goal – get evidence and statements that they can use against you.

Sex crimes are among the most serious criminal matters in Chicago. Simply being accused of a sexually-based crime can be devastating. You’ll be subject to harsh social stigmas and your reputation will be ruined. If you’re convicted, you can spend serious time behind bars. You’ll have a criminal record and may even be required to register as a sex offender. Have you been accused of a sex crime in Chicago? You need to speak with an experienced criminal defense attorney today.

Our attorneys have successfully defended clients against charges for a variety of sex crimes, including:

You can only be convicted of a sex crime if the state can prove that you are guilty beyond a reasonable doubt. This can be difficult if the state lacks physical evidence to support its case against you. Many sex crime cases rely heavily on circumstantial evidence and witness (or victim) testimony.

Our attorneys will fight to prove that the state’s evidence is insufficient to support a finding of guilt. Undermining that state’s case can be very effective in defeating criminal charges. Without solid evidence, the state may be forced to offer a plea or drop the charges.

It is illegal to possess, purchase, sell, or manufacture controlled substances within the state of Illinois. In Chicago, police have made it a priority to investigate and charge drug crimes. Under the Illinois Controlled Substances Act, drug crimes can carry incredibly harsh criminal penalties. Some even require mandatory imprisonment and expensive fines. Relatively minor infractions involving marijuana may be classified as misdemeanors. However, most drug crimes in Chicago will be charged at the felony level.

When you are arrested for a drug crime in Chicago you must remain silent. The only thing you should say to police is that you want to speak with an attorney. Our lawyers have successfully handled some of the most complex drug crime cases in Chicago. We have defended clients against a variety of charges, including:

Just because you’ve been accused of a drug crime in Chicago doesn’t mean that you’ll be convicted. Our attorneys will aggressively defend you against any drug charges that you may face. We will investigate your alleged crime and determine if the state obtained evidence in violation of your rights. With this information, we will determine where we can attack the state’s case against you. If the state cannot prove that you are guilty of all elements of a drug crime you cannot be convicted.

Theft occurs when you take property that belongs to someone else without permission. In Illinois, 720 ILCS 5/16 broadly defines theft to include larceny, fraud, and embezzlement. The common theme of these crimes is taking property without permission. You can face charges for an act of theft if you take property with the intent to keep it from its owner. How serious are theft crimes in Chicago? It depends on the value of the stolen property. Petty theft, which is usually a misdemeanor, involves property valued at less than $950. Grand theft, which can be a felony, involves property valued in excess of $950.

The stakes can be different, however, if you take (or try to take) property from a store. Retail theft, as defined in 720 ILCS 5/16-25, can be a felony if the property involved is worth more than $500. Unlike other theft crimes, you don’t actually have to remove property from the store. You can be guilty of shoplifting if you intend to commit the crime.

Drinking and driving in Chicago can have devastating consequences for you and your family. It is against state law to operate a motor vehicle while under the influence of drugs or alcohol. There are two primary ways you can be charged with DUI in violation of 625 ILCS 5/11-501. The first is if your BAC exceeds the legal limit of .08 percent. The second is if an officer believes you are intoxicated and incapable of driving safely.

A first-time DUI is typically a misdemeanor. However, it can result in up to one year in jail and the loss of your driving privileges for 6 months. You can lose your license for 3 years if you have prior convictions or refuse to cooperate with police. A DUI can also be a felony. You may be charged with felony DUI if you drive with a minor in the vehicle or hurt another person.

Evidence in Chicago criminal DUI cases should always be challenged. The chances of conviction are slim if the state doesn’t have evidence to support its case against you. Our attorneys know how to handle complex DUI matters and get the best possible outcome in your case. Call us today to schedule a free case assessment.

Illinois is tough on crime when it comes to domestic violence. Acts of domestic violence, as defined in 750 ILCS 60, can include:

Domestic violence is a very specific category of abuse. It requires victims and defendants to share a close relationship or bond. This includes spouses, parents, children, dating partners, and roommates.

Anyone accused of domestic violence should speak with a lawyer as soon as possible. False allegations aren’t uncommon. This is often true if you are in the middle of a divorce or family dispute. Many domestic violence cases, particularly those involving false claims, lack physical evidence.

Our attorneys will highlight the fact that the state doesn’t have the proof it needs to prove its case against you. This will help you avoid the very harsh consequences of a domestic violence conviction. Contact us today to schedule a free case assessment.

There is perhaps no more serious crime than taking the life of another person. In Illinois, murder is broken down into two different crimes: first-degree murder and second-degree murder.

First-degree murder [720 ILCS 5/9-1] occurs when you intentionally and purposely kill another person. You can also face first-degree murder charges if you kill another person while committing a felony. If convicted, you’ll face a minimum of 20 years behind bars. Second-degree murder [720 ILCS 5/9-2] occurs when you kill another person in a heat of passion after being provoked. If convicted, you will face between 4 and 20 years in prison.

How can you tell the difference between degrees of homicide in Illinois? First-degree murder tends to be premeditated and thought out. Second-degree murder must be the result of an immediate provocation.

If you are facing homicide charges in Illinois you need the help of an experienced lawyer. Remember, the state must be able to prove that you are guilty of the crime beyond a reasonable doubt. A well-constructed defense can prevent the state from satisfying this high burden of proof. In certain situations, affirmative defenses can also be helpful. This strategy involves admitting to the crime, but offering a legal explanation for your actions. This can help to minimize the fallout from your arrest.

Call our Chicago criminal defense team today to schedule your free consultation. Our aggressive approach to your defense will help you to secure the best outcome in your case.


Speak to a Chicago Criminal Defense Lawyer Today

We know that there are many criminal lawyers in Chicago, IL to choose from. By hiring us, you will have a former prosecutor in your corner.

Don’t settle for less when your liberty, family, and life are on the line. Call Chicago criminal defense attorney Gus Kostopoulos today to discuss your case. We offer a free consultation and are available 24/7.

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