• Experienced Criminal Defense
    Legal Representation in the Greater Chicago Area & Surrounding Counties

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Criminal Defense

If you have been charged with a serious crime, you need help. Don’t lie down and let the police or the state run over you. Being arrested and facing criminal charges is a terrifying experience. We will guide you through it.

DUI/DWI Defense

A DUI charge is serious. You have to move fast! We help minimize and often prevent any damage to your license and criminal background. We attack weaknesses in the DUI charges against you – giving you a great DUI defense.

Case Results

The attorneys at John W. Callahan, Ltd., put decades of DUI charge and Criminal Defense experience to work helping our clients. Read some of the reviews our clients have posted about our services and find out how we can help with your case.


Criminal Defense Law Firm Helping People Accused of Criminal Charges and DUI Offenses

At the DUI Defense and Criminal Defense law firm of John W. Callahan, Ltd., we take pride in the fact that we treat every client as if they are our only client. The personal attention and 24 hour availability for our clients to contact us reflects our deep, personal commitment to giving our clients the best fight to beat their case.  Are you stressed about being arrested by the police or has a family member been arrested for a DUI or charged with a criminal sex crime?  Challenges that other lawyers may consider too intimidating to overcome are something we welcome.  We have overcome impossible odds before in winning felony jury trials on sex cases and we are ready to do it again; from felony sex charges to misdemeanor DUI.  Over and over again, we obtain successful results for our clients in DUI charges and criminal matters due to the hard work and attention to detail that each case requires.  It is this attention to detail that enables us to beat cases that other lawyers found unbeatable.  From the moment you meet with us about your DUI arrest, criminal drug charge or felony sex investigation, we look at the details of every report and we will subpoena records to try to minimize damage and ease your burden.

We offer free consultations so if you have been arrested or if you are being investigated for a criminal offense, call us at 1-877-335-6697 to speak with an experienced criminal defense trial attorney each of whom have between 15 - 20 years of experience handling criminal matters. You can also e-mail us us or use our contact form on this page to get a quick reply.

DUI Charge - Drug Charges - Sex Crime Investigation

If you or a family member has been charged with a crime such as driving under the influence of alcohol, a drug charge or sex investigation relating to alleged improper contact or illegal pornography, you need answers fast.  We pride ourselves on answering calls anytime during the week and on weekends as the need arises.  When you need help, call us right away!  We will talk with you about your case on the phone and the initial office consultation is free so it is important to get experienced criminal defense advice right away.

Over the course of the past 20 years, we have made a point of rising above difficult challenges and beating criminal charges for our clients. Along the way, we have gained a wide range of accolades, experiences and accomplishments, including yearly client satisfaction awards as well as numerous satisfied clients who shower us with five star reviews on an almost weekly basis.

If you are looking for a lawyer who can handle your criminal case or if you have been contacted by the police about a potential criminal investigation, John W. Callahan, Ltd. concentrates only in criminal defense and DUI charges. We don't handle personal injury and we don't handle contracts or divorce.  All our defense law team does every single day is represent clients charged with criminal matters and DUI.  Our legal defense team includes a former criminal prosecutor, which means we have firsthand insight into how the other side approaches the serious cases that we handle. John W Callahan himself has practiced exclusively criminal defense law for the past twenty years.  We know how to defend against criminal charges and we know how to negotiate the best deal for our clients.

Experienced Defense Lawyer 

Among our criminal defense lawyers, John W Callahan is a member of Mensa International who, like the rest of the team, prides himself on his ability to apply his logic and intelligence to the most complex legal challenges in order to find answers that others may not have found.  We also have Bob Stanker, a former Cook County and DuPage County prosecutor who will utilize that experience to work for your best outcome.

Schaumburg Criminal Defense - Naperville DUI Defense

Our criminal defense and DUI defense law firm is available to offer our services to people accused of crimes in Schaumburg, Chicago, Naperville, Wheaton, and the surrounding counties of Illinois including Cook, Dupage, Lake, Kane and Will counties.

If you or someone you care about has been accused of a crime and needs an aggressive and experienced defense lawyer, or if you have been arrested for a DUI, or questioned by the police for a sex offense, we encourage you to get in touch with us as soon as possible. Whether you need an attorney familiar with defense against drunk driving charges, protection from drug charges or any other criminal matter, we can help. You need to get started right away. We will utilize all of our talents and give you every opportunity to help protect your future.

Call us at 1-877-335-6697 to speak immediately with an experienced criminal defense lawyer. You can also e-mail us.

Have Questions About A Criminal Defense Issue?

Reach out to our highly experienced criminal defense team.
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Practice Areas


You need aggressive DUI Defense to protect your license and your driving record. You also want a truly experienced DUI firm to fight for you!


If you are facing a federal or state charge of sexual offense, we have the experience and can guide you through this difficult process.


It is imporatnt that you know each and every question you will be asked at a license reinstatement hearing. We give you the experience of hundreds of successful hearings.


Decades of felony defense experience with hundreds of satisfied clients. Our goal is always to minimize damage to your life.


If you have been contacted by the police or FBI regarding a sexual offense, you need help BEFORE you talk to the police.


From misdemeanor drug charges to prescription medicine charges, we know search and seizure law to help fight your case.


If you are being investigated for any criminal offense, before you talk to the police you should talk with us.


If you are charged with stealing from a store, we will fight to dismiss the charges and keep your record clean.


Domestic Battery requires an aggressive defense to reduce potential punishment and avoid jail if possible.