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About me

     Jon F. Erickson has been a successful lead trial attorney in some of Chicago’s most challenging courtrooms for the past 24 years. As an author, litigator and advisor, Jon F. Erickson has developed an expertise in criminal defense and civil rights law and is considered a leader in DUI defense. 


     Jon F. Erickson has handled over 127 federal civil rights cases, 42 USC Sec. 1983, in the in the United States District Court for the Northern District of Illinois and has secured millions of dollars in damage awards for his civil rights clients.


     Jon F. Erickson has obtained not-guilty verdicts in hundreds of criminal criminal cases -- many high profile cases. In November of 2010, Erickson & Oppenheimer, Ltd. obtained a Not Guilty on 1st Degree Murder for U.S.A. National Boxing Champion, Semajay Thomas and has since won a Not Guilty Jury Verdicts  in an “unheard-of” 3 consecutive 1st Degree Murder trials. 


     Jon F. Erickson has represented thousands of criminal defendants and has served as lead trial cousnel in thousands of bench and jury trials. Jon F. Erickson has obtained not-guilty verdicts in hundreds of criminal criminal cases -- many high profile cases. In November of 2010, Erickson & Oppenheimer, Ltd. obtained a Not Guilty on 1st Degree Murder for U.S.A. National Boxing Champion, Semajay Thomas and has since won a Not Guilty Jury Verdicts  in an “unheard-of” 3 consecutive 1st Degree Murder trials. 


     Erickson honed his DUI trial skills as a lawyer with the Cook County Public Defender's Office where from 1991 to 1993 he handled thousands of DUI cases.     Since then, he has successfully defended hundreds of people accused of DUI, including the high-profile federal Section 1983 civil suit for false DUI arrest against Chicago DUI cop Richard Fiorito.  Erickson's work resulted the removal of the officer from the street, the mass dismissal of over 134 DUI cases in 2009, and a settlement of $450,000.


      In a federal drug conspiracy trial in Western Michigan, Erickson represented a man who a United States Federal District Judge Gordon J. Quist called “… probably the biggest drug dealer in the United States of America.” 


    Erickson served as a legislative aide to Illinois State Representative Larry McKeon, specializing in criminal and civil rights legislation and in 2003, served on Illinois Attorney General Lisa Madigan’s Transition Team and advised General Madigan on civil rights and domestic violence issues. He has guest-lectured on Illinois’ Hate Crime laws at the annual Illinois Victim’s Assistance Academy.  


     Erickson served on an advisory committee on civil rights issues to then Congressman Rahm Emanuel and from 2009 to the present, has served Congressman Mike Quigley in the same capacity.


     Erickson is currently working with state legislators to eliminate the iniequities in Illiniois's TASC and Drug Probation statutes.


Languages spoken: Spanish, English

Photos and videos

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Practice areas


  1. Criminal Defense: 50%
    26 years, 5 thousand cases
  2. Civil Rights: 25%
    11 years, 127 cases
  3. DUI & DWI: 20%
    26 years, 3 thousand cases
  4. Personal Injury: 5%
    15 years, 15 cases


Payment types:

Cash, Check, Credit card

Attorney endorsements

9 total 

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  • James Anthony Shapiro

    Jon Erickson is one of the finest DUI defense lawyers in Chicago. He practiced in front of me for over five years when I was a judge, and for many years before that as a fellow defense lawyer. He was always a well-prepared, zealous advocate. He has handled several high-profile cases, including a murder case where the defendant ran over a cabdriver with his own cab. Those accused of crimes, including but not limited to DUI, would be well advised to retain Jon.


    James Shapiro Criminal defense Attorney
    Relationship: Fellow lawyer in community

  • No photo

    I have known Jon Forrest Erickson for more than four years. Jon studies the issues his clients face in court, prepares an aggressive defense, and produces successful results for his clients. I highly recommend Jon to anyone needing assistance with a DUI. Bradley D. Birge', Esq.


    Bradley Birge Business Attorney
    Relationship: Fellow lawyer in community

Contact info

Erickson & Oppenheimer

118 S. Clinton
Suite 200
Chicago, IL, 60601


ILActive And Authorized To Practice Law199005/11/2016
We have not found any instances of professional misconduct for this lawyer.
Avvo contributions
Legal answers
Award nameGrantorDate granted
Top 100 Trial LawyersNational Trial Lawyers Association2015
Top 100 Criminal Defense Lawyers in IllinoisAmerican Society of Legal Advocates2014
Top 100 Trial LawyersNational Trial Lawyers2014
Top 100 DUI Attorneys in Chicagoland AreaThe National Advocacy for DUI Defense2014
Best Brief AwardNational Moot Court Competition1988
Work experience
TitleCompany nameDuration
Managing PartnerErickson & Oppenheimer, Ltd.2003 - Present
Advisory Board Member Civil Rights IssuesCongressman Mike Quigley2009 - 2014
Managing PartnerCivil Rights Center2008 - 2010
Founding PartnerLaw Offices of Jon F. Erickson2000 - 2003
Legislative AidIllinois State Representative Larry McKeon1997 - 2000
Assistant Public DefenderPublic Defender Of Cook County, Il.1990 - 2001
Law ClerkAttorney General Of Illinois1989 - 1989
Law ClerkMass, Miller & Josephson1988 - 1998
Association namePosition nameDuration
Illinois Association of Criminal DefenseAttorney Member2014 - Present
American Society of Legal AdvocatesAssociation Member2014 - Present
Illinois Trial Lawyers AssociationAttorney Member2014 - Present
Lesbian and Gay Bar Association of ChicagoAttorney Member2010 - Present
Federal Trial BarMember2006 - Present
National Police Accountability ProjectMember2006 - Present
Illinois State Bar AssociationMember2003 - Present
Cook County Bar AssociationAttorney Member1991 - Present
Chicago Bar AssociationAttorney Member1990 - Present
Chicago Council of LawyersAttorney Member2010 - 2013
Congressman Rahm Emanuel's Advisory BoardBoard Member2003 - 2009
Cook County State's Attorney's Domestic Violence Advisory BoardBoard Member1995 - 1996
Legal cases
Case nameOutcome
People v. Semajay ThomasFinding Not Guilty
Dean v. City of Chicago and Officer Fiorito$450,000 to 2 drivers falsely charged with DUIs
Markee Cooper v. City of ChicagoJury Verdict for Plaintiff; $550,000.00
See all legal cases 
Publication nameTitleDate
Grab MagazineStreet Search2014
Illinois Compiled StatutesIllinois Immediate Protection Act1997
School nameMajorDegreeGraduated
John Marshall Law School, ChicagoLawJD - Juris Doctor1990
Trinity College, DublinInternational Human RightsCertificate of Completion1988
Northern Illinois University College of LawPolitical ScienceBS - Bachelor of Science1985
Speaking engagements
Conference nameTitleDate
Professor Rogelio Laso TortsLegal Career Strategies2011
Illinois Victim's Assistance AcademyHate Crime2002