Kostas Kostopoulos's Reviews

Avvo Review Score

4.8 /5.0

20 Client Reviews

Showing 1 - 5 of 20 reviews

Posted by anonymous | March 02, 2025 | Hired Attorney | Lawsuits & Disputes

Please look elsewhere and hire someone else

Please do your research before hiring Gus. Hiring him was the worst decision of my life. He was ill-prepared, botched the work, lied at times and mishandled the case. Consider your life and ramifications of hiring him.

Posted by Sharon | August 18, 2021 | Hired Attorney

Great Lawyer

Gus was an amazing lawyer him and his team were truly impressive they were very professional and very helpful my experience with them was nothing but fantastic

Posted by Crystal S. | July 09, 2020 | Hired Attorney | Litigation

Fantastic Lawyer

Gus Kostopoulos did a fantastic job managing our case. He is prompt, assertive, and extremely knowledgeable. He is far superior than anyone else we have ever dealt with. We enjoyed our experience with him. He made everything so simple and seamless. On the day of trial he was able to win our case in t...he most perfect favorable conditions!

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Posted by Ryan | February 09, 2020 | Hired Attorney | Criminal Defense

The Best Of the Best

Kosopolous Law Group. These guys are seriously top notch. I was arrested For Misdemeanor Domestic Violence in Naperville. After interviewing 4 lawyers in the area and doing my research I felt I'd get the best outcome with Gus and his team. He provided me with the knowledge and communication I needed... as I had plenty of sleepless nights worrying about my outcome. The end result..GUS was able to get my cased dismissed! Honestly do yourself a favor and save the time and effort looking for another Criminal Defense Lawyer and hire GUS!

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Posted by Anderson | December 11, 2018 | Hired Attorney | Lawsuits & Disputes

Great Attorney of the Law

Mr. Gus Kostopoulos made a great job getting my case dismissed, by the time that a case started I have no attorney because I never needed one before so I friend of mine indicated his services. I called and he received me in a meeting right the way to answer all my doubts and took care of my case prec...ise, fast, carefully and conducted the case very well achieving a positive result in my favor.

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Kostas Kostopoulos's Lawyer Endorsements

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Andy Sotiropoulos

Unknown lawyer | Dec 30

Relationship: Fellow lawyer in community

"One of the top attorneys in the entire state. Brilliant legal mind. Very well respected by judges and fellow attorneys state wide. Endorse wholeheartedly."

Michael Orescanin

Criminal defense lawyer | Jun 25

Relationship: Fellow lawyer in community

"Gus has a lot of knowledge, and is excellent at getting to the heart of the legal issue and zealously advocating for his clients"

Frank Scarpino

Criminal defense lawyer | Apr 24

Relationship: Fellow lawyer in community

"I endorse this lawyer. Mr. Kostopoulos is more like a chess player. He thinks five moves ahead in all of his cases. Great lawyer."

Audriana Anderson

Criminal defense lawyer | Jan 10

Relationship: Fellow lawyer in community

"I have known Gus for approximately 20 years. He is dedicated to his clients, is extremely hard-working, and has a lot of experience."

Michael Young

Criminal defense lawyer | Oct 31

Relationship: Fellow lawyer in community

"Attorney Kostopoulos is an excellent attorney."

Moe Ahmad

DUI and DWI lawyer | Jun 30

Relationship: Worked together on matter

"I endorse this lawyer. Gus is a great lawyer who fights hard for his clients. He is compassionate and cares deeply about his clients. I have the upmost respect for Gus."

Katarzyna Naugle

Criminal defense lawyer | May 03

Relationship: Fellow lawyer in community

"I endorse this lawyer."

James Nelson

Criminal defense lawyer | May 02

Relationship: Fellow lawyer in community

"Mr. Kostopoulos is extremely knowledgeable and always prepared. He is always willing to do what is needed for his client. I highly recommend and endorse this lawyer."

Marnie Slavin

Criminal defense lawyer | Apr 30

Relationship: Opposing Counsel on matter

"I can honestly say that Mr. Kostopoulos is an amazing attorney. He is highly knowledgeable, has great client relationships, and is well respected by other lawyers and judges. Anyone would do well to have Mr. Kostopoulos as their attorney."

John Casey

Criminal defense lawyer | Apr 28

Relationship: Fellow lawyer in community

"I have known Gus Kostopoulos for over 15 years. I have worked with him and against him. He is an worthy adversary and skilled litigator. I easily recommend him when clients ask me for a referral."

Phillip Haddad

Criminal defense lawyer | Apr 25

Relationship: Fellow lawyer in community

"Mr. Kostopoulos is an excellent attorney. He is my first point of contact when I have any questions about criminal defense. A very highly respected lawyer. I endorse this lawyer."

Craig Boston

Criminal defense lawyer | Apr 24

Relationship: Fellow lawyer in community

"I met Gus when I worked as a DuPage County Assistant State's Attorney. He was always very professional and always did a good job for his clients. I have known him for years now, and he continues to work hard for his clients. Therefore, I endorse this lawyer."

David Freidberg

Criminal defense lawyer | Apr 24

Relationship: Fellow lawyer in community

"I have known Gus Kostopolous for many years now and can highly recommend him for criminal defense and DUI litigation. I personally refer cases to Gus on a constant basis and I would not trust any client to someone I cannot highly endorse."

Alexander Sendlak

Criminal defense lawyer | Apr 22

Relationship: Fellow lawyer in community

"Mr. Kostopoulos is a regular at the DuPage courthouse. I endorse his work as a criminal defense attorney."

Patrick Weiland

Criminal defense lawyer | Apr 22

Relationship: Fellow lawyer in community

"Gus is a skilled attorney who is well respected in the legal community. His clients are in good hands."

Dominick Dolci

Criminal defense lawyer | Apr 22

Relationship: Fellow lawyer in community

"Gus Kostopoulos is a great lawyer who is highly respected in the legal community. I consider Gus a long-time friend and endorse him as a criminal defense attorney."

Thomas Boggess

Criminal defense lawyer | Apr 21

Relationship: Fellow lawyer in community

"Gus is an excellent attorney with the knowledge and skills to obtain the best possible results for his clients. He is well liked and respected in the legal community. I endorse this lawyer."

Aljonon Coleman

DUI and DWI lawyer | Apr 20

Relationship: Worked together on matter

"I have known Kostas Kostopoulos for nearly a decade. Over the years, I have found him to be a very reliable and result oriented attorney. He works hard to obtain his client's desired outcome. He has the experience and skill to overcome the most challenging obstacles."

Aaron Reinke

Criminal defense lawyer | Apr 18

Relationship: Co-worker

"I happily endorse Kostas Kostopoulos, as he is a strong advocate for his clients and upstanding member of the legal community."

Matthew Fakhoury

Criminal defense lawyer | Apr 18

Relationship: Fellow lawyer in community

"As a former prosecutor, Gus Kostopolos knows the DuPage Court system inside and out. He is well respected by all the judges and prosecutors and gets deals for his clients that no other attorney in DuPage can. I endorse this lawyer."

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Frank Scarpino

Criminal defense lawyer

Audriana Anderson

Criminal defense lawyer

Michael Young

Criminal defense lawyer