Margaret H. "Peg" Warner

Margaret H. "Peg" Warner

Commercial Litigation Insurance Law Litigation - Insurance
Recognized in Best Attorney USA since 2008

About Margaret

Margaret H. "Peg" Warner: Experienced Litigation Attorney in Washington, D.C.

Peg Warner is a distinguished litigation attorney with extensive experience spanning over 30 jurisdictions across state and federal courts. Her legal career has encompassed a broad spectrum of practice areas including antitrust, commercial, class action, environmental, healthcare, insurance, mass tort, product liability, and reinsurance disputes.

Practice Areas

  • Commercial Litigation
  • Insurance Law
  • Litigation - Insurance

Peg Warner has successfully taken numerous cases to verdict or judgment before juries, judges, and arbitration tribunals. Many of her notable cases have involved high-profile public policy issues such as Agent Orange litigation from the 1980s, environmental and Superfund litigation concerning sites like Love Canal and the Hudson River in the 1990s, as well as recent controversies including sexual abuse, 9/11, antitrust, healthcare, ERISA, and COVID-19 cases.

Education & Credentials

  • B.S., Environmental Science, University of Notre Dame, 1985
  • J.D., Georgetown University Law Center, 1990

Peg Warner is admitted to practice in the United States. She has been recognized as a 'Recognized Attorney' by Best Attorney USA since 2008. Her distinguished career includes service at McDermott Will & Schulte.

Affiliations

  • McDermott Will & Schulte, Current Firm

Contact Me

Login Required

Please login to contact this attorney

Login to Contact

Reviews

4.6 / 5

39 Reviews

1,059 Profile Views

F

Freddie Casper

Jan 28, 2026

If you're feeling lost with a Commercial Litigation law issue in District of Columbia, call Margaret H. "Peg" Warner now

I don't usually write reviews, but the help I got from Margaret H. "Peg" Warner during my Commercial Litigation law case in District of Columbia deserves to be shared. It was a messy situation, and I...

S

Shelley Schaefer

Jan 28, 2026

Many thanks to Margaret H. "Peg" Warner for the hard work and dedication to my legal matter

If you need a Commercial Litigation law lawyer, Margaret H. "Peg" Warner is the one to call. Great job and very responsive team. They kept me in the loop and always had time to explain the details of...

J

Janice Orn

Jan 28, 2026

Reliable lawyer you can count on - Margaret H. "Peg" Warner provided excellent service throughout

I've worked with a few lawyers in Washington over the years, but Margaret H. "Peg" Warner stands out for their honesty and thoroughness. They were clear about the process and kept me updated at all ti...

T

Tomas Marquardt

Jan 28, 2026

Highly recommend Margaret H. "Peg" Warner for anyone needing expert Commercial Litigation law help in District of Columbia

I was really stressed about my case in Washington, but Margaret H. "Peg" Warner made everything so smooth and stress-free. Seriously, the best decision I've made lately was hiring them. They handled e...

V

Virginia Raynor

Jan 28, 2026

So happy with the results of my case thanks to the hard work of Margaret H. "Peg" Warner and staff

Honestly, I can't thank Margaret H. "Peg" Warner enough for everything they've done for me. They really know their stuff when it comes to Commercial Litigation law and it shows in the results. 10/10 w...