Atty. William J. Katt

Atty. William J. Katt

William J. Katt is a lawyer practicing international law, medical malpractice, construction / development and 3 other areas of law.

Milwaukee Milwaukee 47 yrs experience 47 year
Call (608) 514-7981 Book Appointment

Profile Summary

About William J. Katt at a glance

William J. Katt is a Regional Managing Partner based in Milwaukee, Wisconsin, practicing at Wilson Elser. They have 47+ years of legal experience, licensed to practice since 1979. Their practice focuses on medical malpractice, product liability, insurance, aviation, and international. Admitted to practice in Wisconsin (1979), Illinois (2002), and Minnesota U.S. District Court, Eastern District of Wisconsin U.S. District Court, Western District o (2010). Educated at Marquette University Law School (J.D., 1979) and Calvin College (B.A., 1976). Recognitions include AV Preeminent. Active member of Memberships & Affiliations DRI International Air & Transportation Safety Bar Association International Association of Defense Counsel, Member Product Liability Committee, 1997-current Calvin College, Board of Trustees. Serands clients in Milwaukee, WI and the surrounding metropolitan area.

Verified attorney profile · Updated June 2026

About

  • William J. Katt is a lawyer practicing international law, medical malpractice, construction / development and 3 other areas of law
  • William received a B.A. degree from Calvin College in 1976, and has been licensed for 47 years
  • William practices at Wilson Elser in Milwaukee, WI

Practice Areas Explained

William J. Katt's Areas of Practice

Each practice area below reflects the types of cases William J. Katt handles, with a brief overview of what that area of law covers.

Medical Malpractice

Medical malpractice lawyers represent patients harmed by negligent doctors, hospitals, and other providers. Free case review, no fee unless you win.

William J. Katt is one of 49,086 medical malpractice attorneys indexed nationally. Browse medical malpractice attorneys in Wisconsin →

Product Liability

William J. Katt is one of 66,193 product liability attorneys indexed nationally. Browse product liability attorneys in Wisconsin →

Insurance Law

Insurance attorneys for coverage disputes, bad faith claims, denied claims, and policy disputes.

William J. Katt is one of 121,912 insurance attorneys indexed nationally. Browse insurance attorneys in Wisconsin →

Aviation Law

Aviation attorneys for aircraft accidents, FAA regulation, pilot defense, and aviation industry matters.

William J. Katt is one of 9,225 aviation attorneys indexed nationally. Browse aviation attorneys in Wisconsin →

International Law

International law attorneys for cross-border transactions, trade, foreign investment, and treaties.

William J. Katt is one of 40,133 international attorneys indexed nationally. Browse international attorneys in Wisconsin →

Jurisdictional Context

Why local counsel matters in Wisconsin

Practicing law in Wisconsin. Legal matters in Wisconsin are governed by state-specific rules of civil and criminal procedure, statutes of limitations, and substantive law. Cases originating in Milwaukee are typically filed in the local municipal court or the appropriate Wisconsin state district court, depending on subject matter and amount in controversy. An attorney licensed in Wisconsin brings working knowledge of local procedural deadlines, judicial practices in this andnue, and the substantive law that applies to cases brought here. Out-of-state attorneys generally cannot represent clients in Wisconsin courts without local counsel or pro hac vice admission.

Looking for additional Wisconsin attorneys? Browse all attorneys in Milwaukee or all attorneys in Wisconsin.

Frequently Asked

Common questions about William J. Katt

Where is William J. Katt's law office located?
William J. Katt's law practice is located in Milwaukee, Wisconsin. The firm is Wilson Elser. You can contact the office directly through this profile page.
What practice areas does William J. Katt handle?
William J. Katt focuses on medical malpractice, product liability, insurance, aviation, international. Each practice area listed reflects experience handling cases of that type in Wisconsin.
How long has William J. Katt practiced law?
William J. Katt has 47+ years of legal experience and has been licensed since 1979.
Where did William J. Katt go to law school?
William J. Katt earned their education at (J.D., 1979); (B.A., 1976).
How can I contact William J. Katt for a consultation?
You can contact William J. Katt 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 William J. Katt received?
William J. Katt's notable recognition includes: AV Preeminent.

Education

J.D.
Marquette University Law School
- 1979
B.A.
Calvin College
- 1976

Awards

AV Preeminent

Bar Admissions

Wisconsin
Admitted: 1979
Illinois
Admitted: 2002
Minnesota U.S. District Court, Eastern District of Wisconsin U.S. District Court, Western District o
Admitted: 2010

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