Atty. Peter Sullivan

Atty. Peter Sullivan

Peter Sullivan is a lawyer practicing matrimonial law, trial practice, appellate practice and 2 other areas of law. Peter received a B.A. degree from University of Massachusetts in 1977, and has been licensed for 38 years.

Chicago Chicago 38 yrs experience 38 year
Call (872) 350-0121 Book Appointment

Appellate Practice & More Attorney · Serving Chicago, IL · 38+ Years Experience

Profile Summary

About Peter Sullivan at a Glance

Peter Sullivan is a Member based in Chicago, Illinois, practicing at Attorney Sullivan & Associates LLC. They have 38+ years of legal experience, licensed to practice since 1988. Their practice focuses on family law, litigation, adr, and appellate. Admitted to practice in New York (1988), U.S. District Court, Southern District of New York (1988), U.S. District Court, Eastern District of New York (1988), and U.S. Court of Appeals, Second Circuit (1994). Educated at Fordham University School of Law (J.D., 1987) and University of Massachusetts (B.A., 1977). Recognitions include AV Preeminent. Active member of The Association of the Bar of the City of New York. Serves clients in Chicago, IL and the surrounding metropolitan area.

Verified attorney profile · Updated October 2026

About Peter Sullivan

  • Peter Sullivan is a lawyer practicing matrimonial law, trial practice, appellate practice and 2 other areas of law
  • Peter received a B.A. degree from University of Massachusetts in 1977, and has been licensed for 38 years
  • Peter practices at Attorney Sullivan & Associates LLC in Chicago, IL

Practice Areas Explained

Peter Sullivan's Areas of Legal Practice

Each practice area below reflects the types of cases Peter Sullivan handles, with a practical overview of what that area of law involves and how it may apply to your situation in Chicago.

Family Law in Chicago

Family law attorneys handle divorce, child custody, child support, adoption, prenups, and protective orders. Find verified family lawyers near you.

Peter Sullivan is one of 185,688 family law attorneys indexed nationally. Browse family law attorneys in Illinois →

Civil Litigation in Chicago

Civil litigation attorneys for breach of contract, business disputes, civil rights, and class action lawsuits.

Peter Sullivan is one of 450,751 litigation attorneys indexed nationally. Browse litigation attorneys in Illinois →

Mediation & Arbitration in Chicago

Mediators and arbitrators for civil, commercial, family, and employment dispute resolution.

Peter Sullivan is one of 73,315 adr attorneys indexed nationally. Browse adr attorneys in Illinois →

Appellate Practice in Chicago

Appellate attorneys for civil and criminal appeals at state and federal court.

Peter Sullivan is one of 85,572 appellate attorneys indexed nationally. Browse appellate attorneys in Illinois →

Jurisdictional Context

Why Local Counsel Matters in Chicago

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 Chicago 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.

Chicago Courts and Legal Process

Choosing a Chicago-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 Chicago or all attorneys in Illinois.

Frequently Asked

Common Questions About Peter Sullivan

Where is Peter Sullivan's law office located?
Peter Sullivan's law practice is located in Chicago, Illinois. The firm is Attorney Sullivan & Associates LLC. You can contact the office directly through this profile page.
What practice areas does Peter Sullivan handle?
Peter Sullivan focuses on family law, litigation, adr, appellate. Each practice area listed reflects experience handling cases of that type in Illinois.
How long has Peter Sullivan practiced law?
Peter Sullivan has 38+ years of legal experience and has been licensed since 1988.
Where did Peter Sullivan go to law school?
Peter Sullivan earned their education at (J.D., 1987); (B.A., 1977).
How can I contact Peter Sullivan for a consultation?
You can contact Peter Sullivan directly through this profile page. Click "Ask the Attorney" to submit a question, or "Schedule a Consultation" to book a meeting. Most claimed-profile attorneys respond within one business day.
What awards or recognition has Peter Sullivan received?
Peter Sullivan's notable recognition includes: AV Preeminent.

Professional Profile

Why Clients in Chicago Choose Peter 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 Peter Sullivan's practice in the field of family law, litigation, adr, and appellate.

Decade-Tested Legal Experience

Peter Sullivan brings 38+ years of hands-on legal practice — enough to have navigated the recurring fact patterns, procedural traps, and negotiation dynamics that shape case outcomes.

Multi-State Bar Admission

Licensed in New York, U.S. District Court, Southern District of New York, and U.S. District Court, Eastern District of New York, Peter Sullivan can represent clients in cases that span state lines or require counsel in multiple jurisdictions.

Broad Practice Area Coverage

Covering family law, litigation, and adr, Peter Sullivan can address the full spectrum of a client's legal needs without requiring referrals to separate specialists for each issue.

Local Presence in Chicago

A Chicago-based practice means Peter Sullivan attends hearings in the same courthouses, knows the local clerks, and understands the unwritten scheduling norms that affect every case filed here.

Case Types

Common Legal Issues Peter Sullivan Handles in Chicago

Below is a representative sample of the types of matters Peter Sullivan has experience with under Illinois law. If your situation involves one of these case categories, this attorney may be well positioned to help you understand your options.

Divorce and property division
Family Law
Child custody and support
Family Law
Spousal support (alimony)
Family Law
Prenuptial agreements
Family Law

This list is illustrative, not exhaustive. Contact Peter Sullivan directly to discuss the specifics of your situation.

Search Reference

How People Find Peter Sullivan Online

Prospective clients searching for legal help in Chicago commonly use a combination of the attorney's name and their specific legal need. The following search terms frequently lead people to this profile and to attorneys like Peter Sullivan.

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If any of the above matches what you searched for, you've found the right profile. Use the contact options at the top of this page to get in touch with Peter Sullivan directly.

Education & Law School Background

J.D.
Fordham University School of Law
- 1987
B.A.
University of Massachusetts
- 1977

Awards & Professional Honors

AV Preeminent

Bar Admissions & Licensed Jurisdictions

New York
Admitted: 1988
U.S. District Court, Southern District of New York
Admitted: 1988
U.S. District Court, Eastern District of New York
Admitted: 1988
U.S. Court of Appeals, Second Circuit
Admitted: 1994
Illinois
Admitted: 2006

Client Reviews & Ratings — Peter Sullivan

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