Atty. John Leon Sullivan
John Leon Sullivan is a lawyer practicing criminal defense, litigation, federal crime. John has been licensed for 51 years.
Criminal Defense & More Attorney · Serving Glencoe, IL · 51+ Years Experience
Profile Summary
About John Leon Sullivan at a Glance
John Leon Sullivan is a criminal defense, federal crimes, and litigation attorney based in Glencoe, Illinois. They have 51+ years of legal experience, licensed to practice since 1975. Admitted to practice in Illinois (1975). Serves clients in Glencoe, IL and the surrounding metropolitan area.
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About John Leon Sullivan
- John Leon Sullivan is a lawyer practicing criminal defense, litigation, federal crime
- John has been licensed for 51 years
- John practices in Glencoe, IL
Practice Areas Explained
John Leon Sullivan's Areas of Legal Practice
Each practice area below reflects the types of cases John Leon Sullivan handles, with a practical overview of what that area of law involves and how it may apply to your situation in Glencoe.
Criminal Defense in Glencoe
A criminal defense attorney protects your rights from arrest through trial. Find experienced lawyers handling DUI, drug, federal, theft, and violent-crime charges.
John Leon Sullivan is one of 212,605 criminal defense attorneys indexed nationally. Browse criminal defense attorneys in Illinois →
Federal Crimes in Glencoe
John Leon Sullivan is one of 6,716 federal crimes attorneys indexed nationally. Browse federal crimes attorneys in Illinois →
Civil Litigation in Glencoe
Civil litigation attorneys for breach of contract, business disputes, civil rights, and class action lawsuits.
John Leon Sullivan is one of 450,750 litigation attorneys indexed nationally. Browse litigation attorneys in Illinois →
Jurisdictional Context
Why Local Counsel Matters in Glencoe
Practicing law in Illinois. Legal matters in Illinois are governed by state-specific rules of civil and criminal procedure, statutes of limitations, and substantive law. Cases originating in Glencoe are typically filed in the local municipal court or the appropriate Illinois state district court, depending on subject matter and amount in controversy. An attorney licensed in Illinois brings working knowledge of local procedural deadlines, judicial practices in this venue, and the substantive law that applies to cases brought here. Out-of-state attorneys generally cannot represent clients in Illinois courts without local counsel or pro hac vice admission.
Glencoe Courts and Legal Process
Choosing a Glencoe-based attorney means your counsel already knows the local docketing timelines, preferred filing formats, and how individual judges typically rule on procedural motions — details that only come from practicing in this jurisdiction day after day. That local familiarity can translate to better strategy, faster filings, and fewer costly surprises.
Looking for additional Illinois attorneys? Browse all attorneys in Glencoe or all attorneys in Illinois.
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Professional Profile
Why Clients in Glencoe Choose John Leon Sullivan
Selecting an attorney is one of the most consequential decisions you can make when a legal matter arises. Below are the core qualities that distinguish John Leon Sullivan's practice in the field of criminal defense, federal crimes, and litigation.
Decade-Tested Legal Experience
John Leon Sullivan brings 51+ years of hands-on legal practice — enough to have navigated the recurring fact patterns, procedural traps, and negotiation dynamics that shape case outcomes.
Broad Practice Area Coverage
Covering criminal defense, federal crimes, and litigation, John Leon Sullivan can address the full spectrum of a client's legal needs without requiring referrals to separate specialists for each issue.
Local Presence in Glencoe
A Glencoe-based practice means John Leon Sullivan attends hearings in the same courthouses, knows the local clerks, and understands the unwritten scheduling norms that affect every case filed here.
Search Reference
How People Find John Leon Sullivan Online
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John Leon Sullivan's Practice Areas & Specializations
Bar Admissions & Licensed Jurisdictions
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