Atty. Patrick John Ahern
Patrick John Ahern is a lawyer practicing antitrust and competition law, corporate compliance, litigation and 4 other areas of law. Patrick received a B.A. degree from Georgetown University in 1981, and has been licensed for 42 years.
Antitrust And Competition Law & More Attorney · Serving Chicago, IL · 42+ Years Experience
Profile Summary
About Patrick John Ahern at a Glance
Patrick John Ahern is a Partner based in Chicago, Illinois, practicing at Baker And Mckenzie Llp. They have 42+ years of legal experience, licensed to practice since 1984. Their practice focuses on business, litigation, and health care. Admitted to practice in Illinois (1984), U.S. District Court, Northern District of Illinois (1985), U.S. Court of Appeals, Seventh Circuit (1992), and U.S. Court of Appeals, Sixth Circuit (1993). Educated at University of Illinois College of Law (J.D., 1984) and Georgetown University (B.A., 1981). Recognitions include BV Distinguished. Serves clients in Chicago, IL and the surrounding metropolitan area.
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About Patrick John Ahern
- Patrick John Ahern is a lawyer practicing antitrust and competition law, corporate compliance, litigation and 4 other areas of law
- Patrick received a B.A. degree from Georgetown University in 1981, and has been licensed for 42 years
- Patrick practices at Baker & McKenzie LLP in Chicago, IL
Practice Areas Explained
Patrick John Ahern's Areas of Legal Practice
Each practice area below reflects the types of cases Patrick John Ahern handles, with a practical overview of what that area of law involves and how it may apply to your situation in Chicago.
Business & Corporate Law in Chicago
Business attorneys advise founders and growing companies on entity formation, contracts, financing, M&A, and dispute resolution.
Patrick John Ahern is one of 497,491 business attorneys indexed nationally. Browse business attorneys in Illinois →
Civil Litigation in Chicago
Civil litigation attorneys for breach of contract, business disputes, civil rights, and class action lawsuits.
Patrick John Ahern is one of 450,751 litigation attorneys indexed nationally. Browse litigation attorneys in Illinois →
Health Care Law in Chicago
Health care attorneys for HIPAA, Medicare, Medicaid, regulatory compliance, and medical licensing matters.
Patrick John Ahern is one of 66,157 health care attorneys indexed nationally. Browse health care 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.
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Professional Profile
Why Clients in Chicago Choose Patrick John Ahern
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 Patrick John Ahern's practice in the field of business, litigation, and health care.
Decade-Tested Legal Experience
Patrick John Ahern brings 42+ 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 Illinois, U.S. District Court, Northern District of Illinois, and U.S. Court of Appeals, Seventh Circuit, Patrick John Ahern can represent clients in cases that span state lines or require counsel in multiple jurisdictions.
Broad Practice Area Coverage
Covering business, litigation, and health care, Patrick John Ahern 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 Patrick John Ahern 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 Patrick John Ahern Handles in Chicago
Below is a representative sample of the types of matters Patrick John Ahern 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.
This list is illustrative, not exhaustive. Contact Patrick John Ahern directly to discuss the specifics of your situation.
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How People Find Patrick John Ahern Online
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Patrick John Ahern's Practice Areas & Specializations
Education & Law School Background
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