Atty. William Michael Janssen

Atty. William Michael Janssen

William Michael Janssen is a lawyer practicing commercial litigation, products liability litigation, drug and medical device litigation and 1 other area of law. William received a B.A. degree from Saint Joseph's University in 1983, and has been licensed for 40 years.

Charleston Charleston 40 yrs experience 40 year
Call (843) 642-8744 Book Appointment

Profile Summary

About William Michael Janssen at a glance

William Michael Janssen is a Prof., Charleston School of Law based in Charleston, South Carolina. They have 40+ years of legal experience, licensed to practice since 1986. Their practice focuses on business and litigation. Admitted to practice in Pennsylvania (1986), U.S. District Court, Eastern District of Pennsylvania (1987), U.S. Court of Appeals, Third Circuit (1988), and U.S. District Court, Western District of Pennsylvania (1989). Educated at Washington College of Law, American University (J.D., 1986) and Saint Joseph's University (B.A., 1983). Recognitions include AV Preeminent. Active member of Philadelphia and American Bar Associations International Association of Defense Counsel Defense Research Institute. Serands clients in Charleston, SC and the surrounding metropolitan area.

Verified attorney profile · Updated June 2026

About

  • William Michael Janssen is a lawyer practicing commercial litigation, products liability litigation, drug and medical device litigation and 1 other area of law
  • William received a B.A. degree from Saint Joseph's University in 1983, and has been licensed for 40 years
  • William practices in Charleston, SC

Practice Areas Explained

William Michael Janssen's Areas of Practice

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

Business & Corporate Law

Business attorneys advise founders and growing companies on entity formation, contracts, financing, M&A, and dispute resolution.

William Michael Janssen is one of 501,317 business attorneys indexed nationally. Browse business attorneys in South Carolina →

Civil Litigation

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

William Michael Janssen is one of 454,532 litigation attorneys indexed nationally. Browse litigation attorneys in South Carolina →

Jurisdictional Context

Why local counsel matters in South Carolina

Practicing law in South Carolina. Legal matters in South Carolina are governed by state-specific rules of civil and criminal procedure, statutes of limitations, and substantive law. Cases originating in Charleston are typically filed in the local municipal court or the appropriate South Carolina state district court, depending on subject matter and amount in controversy. An attorney licensed in South Carolina 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 South Carolina courts without local counsel or pro hac vice admission.

Looking for additional South Carolina attorneys? Browse all attorneys in Charleston or all attorneys in South Carolina.

Frequently Asked

Common questions about William Michael Janssen

Where is William Michael Janssen's law office located?
William Michael Janssen's law practice is located in Charleston, South Carolina. You can contact the office directly through this profile page.
What practice areas does William Michael Janssen handle?
William Michael Janssen focuses on business, litigation. Each practice area listed reflects experience handling cases of that type in South Carolina.
How long has William Michael Janssen practiced law?
William Michael Janssen has 40+ years of legal experience and has been licensed since 1986.
Where did William Michael Janssen go to law school?
William Michael Janssen earned their education at (J.D., 1986); (B.A., 1983).
How can I contact William Michael Janssen for a consultation?
You can contact William Michael Janssen 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 Michael Janssen received?
William Michael Janssen's notable recognition includes: AV Preeminent.

Education

J.D.
Washington College of Law, American University
- 1986
B.A.
Saint Joseph's University
- 1983

Awards

AV Preeminent

Bar Admissions

Pennsylvania
Admitted: 1986
U.S. District Court, Eastern District of Pennsylvania
Admitted: 1987
U.S. Court of Appeals, Third Circuit
Admitted: 1988
U.S. District Court, Western District of Pennsylvania
Admitted: 1989
U.S. District Court, Middle District of Pennsylvania
Admitted: 1995
U.S. Court of Appeals, Federal Circuit
Admitted: 1998
U.S. Supreme Court
Admitted: 2004
South Carolina
Admitted: 2015

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