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William Lowell Opal
About William
Biography
No matter what type of case I am handling, I pride myself on client communication. I file nothing on a client's behalf without giving the client an opportunity to review and understand each facet of every document. In court, I make sure the client is prepared to face the judge, and knows what to expect before each court appearance.
I also have extensivecourtroom experience. I have tried over 200 bench trials and 30 jury trials in my career. I am comfortable in any courtroom, whether it be a family law or criminal matter. I am not afraid to step into any courtroom and take a matter to trial/hearing to ensure that my clients receive favorable outcomes.
Please contact me for a free consultation at or at
Practice Areas
4
Practice Areas
Fees and Rates
Cost
Hourly Rates
$ 400-400 per hour
Retainer
Sometimes
Payment Methods
- Cash
- Check
- Credit Card
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Chat withLicenses
Licensed in Michigan for 5 years
State: Michigan
Acquired: 2020
No misconduct found
Licensed in Florida for 14 years
State: Florida
Acquired: 2011
No misconduct found
Licensed in Illinois for 18 years
State: Illinois
Acquired: 2007
No misconduct found
Location
Opal O'Brien LLC
310 S. County Farm Rd., Suite D, Wheaton, IL, 60187
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William Lowell Opal's Reviews
Showing 1 - 5 of 85 client reviews from Avvo
Posted by Tim | May 22, 2025 | Hired Attorney
This review is from a person who hired this attorney.
'Knows his stuff'
Bill was amazing throughout my entire divorce process. He was on top of anything and everything thrown our way and made the process seamless.
Posted by Lauren | January 2, 2025 | Hired Attorney
This review is from a person who hired this attorney.
Angel in disguise!
There are no words that come close to describing Bill and his team. What I can say, in MY OWN WORDS, is I would donate my left (or right) kidney, without hesitation! I was in a SEVERE mess, due to a PRIOR attorney's lack of commitment to my case. I had lost all hope, faith, strength & will-power to k...
Posted by anonymous | December 26, 2024 | Hired Attorney
This review is from a person who hired this attorney.
Efficient, communicative and effective!
Bill helped me through my divorce process. He made the process super clear and easy, was helpful at answering any questions and helped me get what I needed out of the process. Would highly recommend
Posted by Steve | May 1, 2024 | Hired Attorney
This review is from a person who hired this attorney.
Prenup agreement
Bill explained his role in reviewing a prenup agreement and made the process very comfortable. He seemed to work well with my then-fiancee's attorney, whose office referred me to him.
Posted by Alan | April 30, 2024 | Hired Attorney
This review is from a person who hired this attorney.
Phifer Alan
Mr.Opal was outstanding and amazing his firm is top notch!! Mr Opal and his legal team kept me the loop of everything that was going on. I live in Florida,I look forward to meeting him and his staff when I vist!
William Lowell Opal's Lawyer Endorsements
"Bill is an excellent attorney in all regards. I do not know anyone more hardworking that Bill. What impresses me most about Bill is his compassion for his clients. I know Bill prides himself on communicating with his clients at all hours, even in the middle of the night if need be, so that they always feel comfortable and they always know what is going on. This is vital for individuals charged with crimes and also for those going through the difficult process of divorce. There are many attorneys out there who are primarily interested in making money off of their clients. Bill is not one of those attorneys, he genuinely cares about his clients and obtaining the best possible results for them. I would highly recommend Bill to anyone looking for a criminal defense or divorce attorney!"
"I have opposed Bill in divorce litigation. He is smart, thoughtful, and reasonable--a forceful advocate without unnecessarily incurring fees by exacerbating litigation where the cost/benefit does not warrant it."
"I have worked with Bill on several matters in the past. I have always found him to be a very knowledgeable and skilled advocate for his clients. I always enjoy working against Bill on resolving a family law issue."
"When I have an issue revolving around family matter I come to William Opal because I know he has likely experienced the issue I am having."
"I would highly recommend Attorney Opal as he is a zealous advocate on behalf of his clients and an excellent attorney."
"Excellent lawyer; strong negotiator; and, fair with his billing."
"I endorse this lawyer."
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"Bill is an outstanding attorney and my go-to-guy for all family law matters. He is a true professional with impeccable integrity."
"I endorse this lawyer."
"I endorse this lawyer."
"Bill is a fantastic lawyer who is always willing to make sure that his client's matters are represented the right way from the minute he comes in on the case. Whether it is a criminal or family law matter, Bill is a zealous advocate who takes the time to make that the client understands what is going on and is comfortable with the plan for their representation. He keeps the client informed and always treats their case with the respect and attention it deserves."
"I endorse this lawyer."
"I endorse this lawyer. Bill is one of the very smartest and best lawyers in the courthouse. He is tough and aggressive as well. The Judges love this guy! i would highly recommend him to people in need of a great Lawyer."
"I endorse this lawyer."
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Experience
Honors
2016
Rising Star, Super Lawyers Magazine
2011
Outstanding Misdemeanor Prosecutor, DuPage County State's Attorney's Office
2007
Business Law Review, University of Miami School of Law
2004
Magna Cum Laude, University of Notre Dame
N/A
Dean's List, University of Notre Dame
Work Experience
2015 - Present
Partner, Opal O'Brien LLC
2012 - 2015
Attorney, Roberts PC
2007 - 2012
Assistant State's Attorney, DuPage County State's Attorney Office
2005 - 2005
Judicial Extern, Second District Court Of Appeal
2005 - 2007
Law Clerk, DuPage County State's Attorney's Office
2000 - 2004
Law Clerk, Norton, Mancini, Weiler & DeAno
Associations
2015 - Present
Illinois State Bar AssociationMember
2015 - Present
Federal Trial Bar for the Northern District of IllinoisMember
2011 - Present
DuPage County Bar AssociationMember
2014 - 2015
DuPage American Inn of CourtMember
2013 - 2014
DuPage County Bar Association, Planning CommitteeBoard Member
2008 - 2014
Link UnlimitedVolunteer
Education
2007
University of Miami School of Law
JD - Juris Doctor
2004
University of Notre Dame
BA - Bachelor of Arts
Speaking Engagements
2016
NVHS Law Classes
Civil/Criminal Law
2015
February 2015 CLE Meeting
Non-Lawyer Ownership of Law Firms
2015
DuPage County Bar Association
Criminal Law for Paralegals
2014
Substance Abuse Panel
Law & Consequences
2014
Family Law Intake 101
Family Law Intake
2014
Benet Academy - Entire School
Teenage Pitfalls
2014
Alumni Speaker Series
Legal Profession - Trial Attorney
2013
Young Lawyer's Division
Moving Up and Moving On
2011
Trial Techniques
Cook County & Collar Counties State’s Attorney DUI Training
2010
Probationary Trooper Joint Training Day
DUI Tips and Techniques
2009
DuPage County Police Association
Recent Trends in DUI Law and the 2009 Changes
2009
2009 Railroad Safety Education and Enforcement Workshop
Legal Perspectives on Railroad Safety
Publications
2015
Illinois Trial Court Divorce Digest
Exclusive Possession Denied
2014
Illinois Trial Court Divorce Digest
Interest Not Applicable
Languages
English
Activity
Legal Answers
Legal Answers
Q&A
Do i have father's rights if i didn't sign the B.C. but my last name is the last name of my girl on the certificate? thank you
14 Oct 2015
Q&A
A Mother with Joint Legal Custody is coaching her 7 year old daughter to lie when she gets to her Father's home.
13 Oct 2015
Q&A
Can my Attorney order my ex-husband to pay the second retainer?
23 Aug 2015