Atty. Thomas Mark Williams
Atty. Thomas Mark Williams is a lawyer practicing trademark infringement, litigation, false patent marking and 2 other areas of law.
False Patent Marking & More Attorney · Serving Chicago, IL · 43+ Years Experience
Profile Summary
About Thomas Mark Williams at a Glance
Thomas Mark Williams is a trademark, ip, and litigation attorney based in Chicago, Illinois. They have 43+ years of legal experience, licensed to practice since 1983. Admitted to practice in Wisconsin (1983) and Illinois (1996). Educated at University of Wisconsin - Madison (B.A. Behavioral, 1993) and University of Illinois J.D. 1996 Law Review (—). Recognitions include Peer Reviewed. Serves clients in Chicago, IL and the surrounding metropolitan area.
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About Thomas Mark Williams
- Atty. Thomas Mark Williams is a lawyer practicing trademark infringement, litigation, false patent marking and 2 other areas of law
- Thomas received a B.A. degree from University of Wisconsin - Madison in 1993, and has been licensed for 43 years
- Thomas practices in Chicago, IL
Practice Areas Explained
Thomas Mark Williams's Areas of Legal Practice
Each practice area below reflects the types of cases Thomas Mark Williams handles, with a practical overview of what that area of law involves and how it may apply to your situation in Chicago.
Trademark Law in Chicago
Thomas Mark Williams is one of 23,086 trademark attorneys indexed nationally. Browse trademark attorneys in Illinois →
Intellectual Property in Chicago
IP attorneys protect inventions, brands, and creative work through patent prosecution, trademark registration, copyright, and trade-secret enforcement.
Thomas Mark Williams is one of 105,285 ip attorneys indexed nationally. Browse ip attorneys in Illinois →
Civil Litigation in Chicago
Civil litigation attorneys for breach of contract, business disputes, civil rights, and class action lawsuits.
Thomas Mark Williams is one of 450,751 litigation attorneys indexed nationally. Browse litigation 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 Thomas Mark Williams
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 Thomas Mark Williams's practice in the field of trademark, ip, and litigation.
Decade-Tested Legal Experience
Thomas Mark Williams brings 43+ 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 Wisconsin and Illinois, Thomas Mark Williams can represent clients in cases that span state lines or require counsel in multiple jurisdictions.
Broad Practice Area Coverage
Covering trademark, ip, and litigation, Thomas Mark Williams 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 Thomas Mark Williams 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 Thomas Mark Williams Handles in Chicago
Below is a representative sample of the types of matters Thomas Mark Williams 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 Thomas Mark Williams directly to discuss the specifics of your situation.
Search Reference
How People Find Thomas Mark Williams Online
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Thomas Mark Williams's Practice Areas & Specializations
Education & Law School Background
Awards & Professional Honors
Bar Admissions & Licensed Jurisdictions
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