Atty. Katherine A Trefz

Atty. Katherine A Trefz

Ms. Katherine A Trefz is a lawyer practicing government, litigation, corporate & incorporation.

Washington Washington 17 yrs experience 17 year
Call (771) 244-1984 Book Appointment

Profile Summary

About Katherine A Trefz at a glance

Katherine A Trefz is an Associate based in Washington, District of Columbia, practicing at Williams And Connolly Llp. They have 17+ years of legal experience, licensed to practice since 2009. Their practice focuses on formation, litigation, and government. Admitted to practice in California (2009) and District of Columbia (2010). Educated at University of California, Berkeley School of Law (J.D., 2008) and University of Southern California (B.A University, 2005). Serands clients in Washington, DC and the surrounding metropolitan area.

Verified attorney profile · Updated June 2026

About

  • Ms. Katherine A Trefz is a lawyer practicing government, litigation, corporate & incorporation
  • Katherine received a degree from University of Southern California in 2005, and has been licensed for 17 years
  • Katherine practices at Williams & Connolly LLP in Washington, DC

Practice Areas Explained

Katherine A Trefz's Areas of Practice

Each practice area below reflects the types of cases Katherine A Trefz handles, with a brief overview of what that area of law covers.

Business Formation

Katherine A Trefz is one of 35,584 formation attorneys indexed nationally. Browse formation attorneys in District of Columbia →

Civil Litigation

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

Katherine A Trefz is one of 454,532 litigation attorneys indexed nationally. Browse litigation attorneys in District of Columbia →

Government & Administrative Law

Attorneys for administrative law, agency hearings, government contracts, licensing, and public benefits.

Katherine A Trefz is one of 132,225 government attorneys indexed nationally. Browse government attorneys in District of Columbia →

Jurisdictional Context

Why local counsel matters in District of Columbia

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

Looking for additional District of Columbia attorneys? Browse all attorneys in Washington or all attorneys in District of Columbia.

Frequently Asked

Common questions about Katherine A Trefz

Where is Katherine A Trefz's law office located?
Katherine A Trefz's law practice is located in Washington, District of Columbia. The firm is Williams And Connolly Llp. You can contact the office directly through this profile page.
What practice areas does Katherine A Trefz handle?
Katherine A Trefz focuses on formation, litigation, government. Each practice area listed reflects experience handling cases of that type in District of Columbia.
How long has Katherine A Trefz practiced law?
Katherine A Trefz has 17+ years of legal experience and has been licensed since 2009.
Where did Katherine A Trefz go to law school?
Katherine A Trefz earned their education at (J.D., 2008); (B.A University, 2005).
How can I contact Katherine A Trefz for a consultation?
You can contact Katherine A Trefz 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.

Education

J.D.
University of California, Berkeley School of Law
- 2008
B.A University
University of Southern California
- 2005

Bar Admissions

California
Admitted: 2009
District of Columbia
Admitted: 2010

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