Atty. William K. Koppenheffer

Atty. William K. Koppenheffer

William K. Koppenheffer is a lawyer practicing civil litigation, commercial law, real estate and 1 other area of law.

Lebanon Lebanon 47 yrs experience 47 year
Book Appointment

Profile Summary

About William K. Koppenheffer at a glance

William K. Koppenheffer is a Member based in Lebanon, New Hampshire, practicing at Janson & Koppenheffer. They have 47+ years of legal experience, licensed to practice since 1979. Their practice focuses on family law, business, real estate, and litigation. Admitted to practice in New Hampshire (1979), U.S. District Court, District of New Hampshire (1979), Vermont (1989), and U.S. District Court, District of Vermont (1989). Educated at Boston College Law School (J.D., 1979) and Dartmouth College (B.A., 1973). Recognitions include CV Notable. Active member of Grafton County (Treasurer, 1998), Vermont and New Hampshire Bar Associations. Serands clients in Lebanon, NH and the surrounding metropolitan area.

Verified attorney profile · Updated June 2026

About

  • William K. Koppenheffer is a lawyer practicing civil litigation, commercial law, real estate and 1 other area of law
  • William K. received a B.A. degree from Dartmouth College in 1973, and has been licensed for 47 years
  • William K. practices at Janson & Koppenheffer in Lebanon, NH

Practice Areas Explained

William K. Koppenheffer's Areas of Practice

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

Family Law

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

William K. Koppenheffer is one of 187,066 family law attorneys indexed nationally. Browse family law attorneys in New Hampshire →

Business & Corporate Law

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

William K. Koppenheffer is one of 501,317 business attorneys indexed nationally. Browse business attorneys in New Hampshire →

Real Estate Law

Real estate attorneys handle home purchases, sales, commercial transactions, title disputes, and landlord-tenant matters.

William K. Koppenheffer is one of 316,149 real estate attorneys indexed nationally. Browse real estate attorneys in New Hampshire →

Civil Litigation

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

William K. Koppenheffer is one of 454,532 litigation attorneys indexed nationally. Browse litigation attorneys in New Hampshire →

Jurisdictional Context

Why local counsel matters in New Hampshire

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

Looking for additional New Hampshire attorneys? Browse all attorneys in Lebanon or all attorneys in New Hampshire.

Frequently Asked

Common questions about William K. Koppenheffer

Where is William K. Koppenheffer's law office located?
William K. Koppenheffer's law practice is located in Lebanon, New Hampshire. The firm is Janson & Koppenheffer. You can contact the office directly through this profile page.
What practice areas does William K. Koppenheffer handle?
William K. Koppenheffer focuses on family law, business, real estate, litigation. Each practice area listed reflects experience handling cases of that type in New Hampshire.
How long has William K. Koppenheffer practiced law?
William K. Koppenheffer has 47+ years of legal experience and has been licensed since 1979.
Where did William K. Koppenheffer go to law school?
William K. Koppenheffer earned their education at (J.D., 1979); (B.A., 1973).
How can I contact William K. Koppenheffer for a consultation?
You can contact William K. Koppenheffer 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 K. Koppenheffer received?
William K. Koppenheffer's notable recognition includes: CV Notable.

Education

J.D.
Boston College Law School
- 1979
B.A.
Dartmouth College
- 1973

Awards

CV Notable

Bar Admissions

New Hampshire
Admitted: 1979
U.S. District Court, District of New Hampshire
Admitted: 1979
Vermont
Admitted: 1989
U.S. District Court, District of Vermont
Admitted: 1989

Reviews

3.0
1 Review
5 0
4 0
3 0
2 0
1 0
These reviews belong to platform users; they do not constitute advertisement or promotion for the attorney. Opinions are published for informational purposes only.

No reviews yet.