Atty. John L. Dagley

Atty. John L. Dagley

Mr. Dagley has practiced law since 1990.

Houston Houston 36 yrs experience 36 year
Call (346) 771-7738 Book Appointment

Profile Summary

About John L. Dagley at a glance

John L. Dagley is a Partner based in Houston, Texas, practicing at Buck Keenan LLP. They have 36+ years of legal experience, licensed to practice since 1990. Their practice focuses on trusts, business, ip, securities, and litigation. Admitted to practice in Texas (1990) and U.S. District Court, Southern District of Texas (1990). Educated at Baylor University (J.D., 1990) and Baylor University (B.B.A., 1988). Recognitions include Peer Reviewed. Active member of Houston Bar Association State Bar of Texas Houston Young Lawyers Association. Serands clients in Houston, TX and the surrounding metropolitan area.

Verified attorney profile · Updated June 2026

About

  • Mr. Dagley has practiced law since 1990
  • After beginning his practice with Porter Hedges L.L.P., formerly Porter & Clements, L.L.P., Mr. Dagley practiced at Campbell Harrison & Dagley LLP for 21 years
  • He joined Buck Keenan LLP in January 2016
  • He earned his undergraduate degree in business administration from Baylor University in 1988 and his law degree from Baylor University in 1990.Since being licensed by the State Bar of Texas in 1990, Mr. Dagley has tried cases for plaintiffs and defendants and represented parties on appeal in state and federal courts and arbitrations throughout Texas
  • His clients have included individuals, small and mid-size businesses, Fortune 500 companies, and governmental entities
  • Mr. Dagley's practice areas include complex business disputes, fiduciary litigation, probate, trust and estate litigation, securities fraud, oil and gas litigation, insurance coverage and bad faith, trademark litigation, trade secrets and non-compete agreements, professional malpractice, employment, consumer fraud, personal injury/wrongful death, and trial and appellate procedural issues
  • In addition to numerous jury and bench trials and arbitrations since 1990, Mr. Dagley's 2015 cases included the jury trial of a Texas Securities Act dispute involving fuel oil contracts in Kurdistan and the arbitration of a contract dispute involving a profits interest in an oil and gas concession in Kurdistan
  • Mr. Dagley also regularly counsels clients about disputes or potential disputes outside the litigation context.Mr
  • Dagley has regularly presented individually and as a panel member at continuing legal education events, most recently at the State Bar of Texas 10th Annual Fiduciary Litigation Course in December 2015 on the topic of “Finding Fiduciaries in the Weeds,” regarding informal fiduciary relationships in Texas, and the Houston Bar Association Probate, Trusts and Estates Section November 2015 meeting and Innovations: Breaking Boundaries in Custody Litigation on the topic of “Caught in the Middle: Family Court, Probate Court and the Adult Disabled Child, the State Bar of Texas 9th Annual Fiduciary Litigation Course on the topic of “Standing at the Crossroads: The Intersection of the Family, Trust, Estates, and Business Organizations Codes,” and The StoneTurn Group Intellectual Property Roundtable on the topic of “Trade Dress Liability and Damages Issues.”

Practice Areas Explained

John L. Dagley's Areas of Practice

Each practice area below reflects the types of cases John L. Dagley handles, with a brief overview of what that area of law covers.

Trusts

John L. Dagley is one of 104,172 trusts attorneys indexed nationally. Browse trusts attorneys in Texas →

Business & Corporate Law

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

John L. Dagley is one of 501,317 business attorneys indexed nationally. Browse business attorneys in Texas →

Intellectual Property

IP attorneys protect inventions, brands, and creative work through patent prosecution, trademark registration, copyright, and trade-secret enforcement.

John L. Dagley is one of 106,079 ip attorneys indexed nationally. Browse ip attorneys in Texas →

Securities Law

John L. Dagley is one of 64,529 securities attorneys indexed nationally. Browse securities attorneys in Texas →

Civil Litigation

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

John L. Dagley is one of 454,532 litigation attorneys indexed nationally. Browse litigation attorneys in Texas →

Jurisdictional Context

Why local counsel matters in Texas

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

Looking for additional Texas attorneys? Browse all attorneys in Houston or all attorneys in Texas.

Frequently Asked

Common questions about John L. Dagley

Where is John L. Dagley's law office located?
John L. Dagley's law practice is located in Houston, Texas. The firm is Buck Keenan LLP. You can contact the office directly through this profile page.
What practice areas does John L. Dagley handle?
John L. Dagley focuses on trusts, business, ip, securities, litigation. Each practice area listed reflects experience handling cases of that type in Texas.
How long has John L. Dagley practiced law?
John L. Dagley has 36+ years of legal experience and has been licensed since 1990.
Where did John L. Dagley go to law school?
John L. Dagley earned their education at (J.D., 1990); (B.B.A., 1988).
How can I contact John L. Dagley for a consultation?
You can contact John L. Dagley 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 John L. Dagley received?
John L. Dagley's notable recognition includes: Peer Reviewed.

Education

J.D.
Baylor University
- 1990
B.B.A.
Baylor University
- 1988

Awards

Peer Reviewed

Bar Admissions

Texas
Admitted: 1990
U.S. District Court, Southern District of Texas
Admitted: 1990

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