Atty. Keil 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.
Class Action / Complex Litigation & More Attorney · Serving Portland, OR · 20+ Years Experience
Profile Summary
About Keil Mueller at a Glance
Keil Mueller is a Partner based in Portland, Oregon, practicing at Keller Rohrback L.L.P.. They have 20+ years of legal experience, licensed to practice since 2006. Their practice focuses on class action, securities, and litigation. Admitted to practice in New York (2006), U.S. District Court, Southern New York (2006), U.S. District Court, Eastern New York (2006), and Oregon State Bar (2008). Educated at New York University School of Law (J.D., 2005) and Williams College (B.A. Philosophy, 1999). Active member of Professional and Civic Involvement American Bar Association, member American Constitution Society, Oregon Lawyer Chapter, board member , 2016-present. Serves clients in Portland, OR and the surrounding metropolitan area.
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About Keil 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
- Articles & Presentations •Presenter, Little Green Men: Protest and Federal Repression in Portland, American Constitution Society Oregon, Portland, Oregon (August 2020). •Oregon Civil Pleading and Litigation, Answers, Affirmative Defenses, Counterclaims, and Replies, 2020 Edition. •Trial Lawyers, You Say Yes
- I Say No. Ethical Issues in Multi-Plaintiff Settlements (2015). •Oregon Statutory Time Limitations, Chapter 10: Business Litigation, 2013 & 2017 Revisions. •Oregon Civil Pleading and Practice, Chapter 43: Attorney Fees, Cost Bills, and ORCP 17 Sanctions, 2012 Revision. •Oregon State Bar Litigation Journal, Avoiding Removal and Dismissal Under the Securities Litigation Uniform Standards Act of 1998 (2010)
- Recognitions Honors & Awards •The Best Lawyers in America, Portland, Oregon, 2026 (Recognized since 2019): •Commercial Litigation •Litigation - Securities •Mass Tort Litigation / Class Actions - Plaintiffs •Selected to Super Lawyers list in Super Lawyers - Oregon, 2020-2025 •Benchmark Litigation, 2015-2025 •Selected to Rising Stars list in Super Lawyers - Oregon, 2012-2016
Practice Areas Explained
Keil Mueller's Areas of Legal Practice
Each practice area below reflects the types of cases Keil Mueller handles, with a practical overview of what that area of law involves and how it may apply to your situation in Portland.
Class Action in Portland
Keil Mueller is one of 26,226 class action attorneys indexed nationally. Browse class action attorneys in Oregon →
Securities Law in Portland
Keil Mueller is one of 64,075 securities attorneys indexed nationally. Browse securities attorneys in Oregon →
Civil Litigation in Portland
Civil litigation attorneys for breach of contract, business disputes, civil rights, and class action lawsuits.
Keil Mueller is one of 450,750 litigation attorneys indexed nationally. Browse litigation attorneys in Oregon →
Jurisdictional Context
Why Local Counsel Matters in Portland
Practicing law in Oregon. Legal matters in Oregon are governed by state-specific rules of civil and criminal procedure, statutes of limitations, and substantive law. Cases originating in Portland are typically filed in the local municipal court or the appropriate Oregon state district court, depending on subject matter and amount in controversy. An attorney licensed in Oregon brings working knowledge of local procedural deadlines, judicial practices in this venue, and the substantive law that applies to cases brought here. Out-of-state attorneys generally cannot represent clients in Oregon courts without local counsel or pro hac vice admission.
Portland Courts and Legal Process
Choosing a Portland-based attorney means your counsel already knows the local docketing timelines, preferred filing formats, and how individual judges typically rule on procedural motions — details that only come from practicing in this jurisdiction day after day. That local familiarity can translate to better strategy, faster filings, and fewer costly surprises.
Looking for additional Oregon attorneys? Browse all attorneys in Portland or all attorneys in Oregon.
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Professional Profile
Why Clients in Portland Choose Keil Mueller
Selecting an attorney is one of the most consequential decisions you can make when a legal matter arises. Below are the core qualities that distinguish Keil Mueller's practice in the field of class action, securities, and litigation.
Decade-Tested Legal Experience
Keil Mueller brings 20+ years of hands-on legal practice — enough to have navigated the recurring fact patterns, procedural traps, and negotiation dynamics that shape case outcomes.
Multi-State Bar Admission
Licensed in New York, U.S. District Court, Southern New York, and U.S. District Court, Eastern New York, Keil Mueller can represent clients in cases that span state lines or require counsel in multiple jurisdictions.
Broad Practice Area Coverage
Covering class action, securities, and litigation, Keil Mueller can address the full spectrum of a client's legal needs without requiring referrals to separate specialists for each issue.
Local Presence in Portland
A Portland-based practice means Keil Mueller attends hearings in the same courthouses, knows the local clerks, and understands the unwritten scheduling norms that affect every case filed here.
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Keil Mueller's Practice Areas & Specializations
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Bar Admissions & Licensed Jurisdictions
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