KM

Keil M. Mueller

Portland, OR

Trusted business attorney serving Portland.

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Keil M. Mueller is an attorney based in Portland, OREGON. The practice focuses on Business, Class Action, and Litigation.

Based in
Portland, OREGON
Experience
attorney
Known for
Business · Class Action · Litigation
  • Handles Business, Class Action, and Litigation matters from Portland, OREGON.
  • Recognized with Best Lawyers in America — Commercial Litigation (2026).

About Keil M. Mueller: Keil M. Mueller is an attorney based in Portland, OREGON. The practice focuses on Business, Class Action, and Litigation.

Areas of practice

Practice focus

Keil M. Mueller represents clients in Portland, Oregon across the following areas of law. Each area links to other verified attorneys with the same focus.

Biography

About Keil M. Mueller

Keil Mueller is a resolute and tireless advocate for his clients’ interests.


With over 15 years of litigation experience, Keil has regularly represented government entities, investors, consumers, businesses and other Plaintiffs in a wide variety of complex legal matters and class actions. His practice focuses on issues related to securities and financial fraud, the environment, consumer class actions, and partner and shareholder disputes among others. Keil’s thoughtful but tenacious pursuit of his clients’ claims has contributed to significant courtroom victories and favorable settlements. He has successfully represented clients in matters of corporate malfeasance, taking on big companies such as AIG, Oppenheimer, FedEx Ground, JP Morgan Chase, and Bank of New York Mellon, just to name a few.

Currently, Keil is a key member of teams prosecuting claims on behalf of the State of Maryland, the State of Delaware, and the City of Seattle against multinational chemical manufacturer, Monsanto, and seeking to hold the corporate giant responsible for environmental contamination and other harms caused by Monsanto’s sale and marketing of PCBs. Prior to joining Keller Rohrback, Keil also was a member of the team that represented the State of Oregon in similar claims against Monsanto, which Monsanto recently agreed to settle for $698 million, the largest environmental settlement in Oregon’s history.


In addition to advocating for his clients, Keil serves as a board member of the Campaign for Equal Justice and of the Oregon Lawyer Chapter of the American Constitution Society.

Credentials

Education

  • New York University

    J.D. · 2008

Recognition

Awards & honors

  • Best Lawyers in America — Commercial Litigation

    2026

  • Best Lawyers in America — Litigation - Securities

    2026

  • Best Lawyers in America — Mass Tort Litigation / Class Actions - Plaintiffs

    2026

  • Best Lawyers in America — Additional Areas of Practice:

    2026

  • Best Lawyers in America — Litigation - Environmental

    2026

Locations

Office locations

Main office

601 SW Second Avnue, Suite 1900

Portland, Oregon 97204

Open in Google Maps

Client feedback

Client reviews

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Frequently asked

Common questions

  • What areas of law does Keil M. Mueller practice?

    Keil M. Mueller focuses on Business, Class Action, Litigation, and Product Liability.

  • Where is Keil M. Mueller located?

    Keil M. Mueller primarily serves clients in Portland, Oregon, with an office at 601 SW Second Avnue, Suite 1900.

  • Is Keil M. Mueller a verified attorney?

    Keil M. Mueller's profile is listed but has not yet been claimed by the attorney. Verification status is pending.

  • How can I schedule a consultation with Keil M. Mueller?

    You can book a consultation through LawyersListed directly from this page. Initial outreach can also be made by phone at 971-253-4600.