Skip to main content
Founder & principal attorney

D. Colby AddisonTrial judgment. Judicial perspective.

Colby is an Oklahoma trial lawyer who represents people in serious-injury and civil-rights matters, employees and employers in workplace matters, and tribal governments on institutional questions that demand clear judgment.

D. Colby Addison

Practice

Work built around the record, the forum, and what is actually at stake.

The lawyer behind the work

Direct advice when the stakes are real.

Colby represents people in serious-injury, trucking, and civil-rights cases. He represents employees and employers in workplace matters and advises tribal governments on sovereignty, governance, gaming, business, and employment.

He has more than a decade of trial experience, has handled thousands of matters, has certified classes in litigation, and has recovered millions in settlements and verdicts. The work begins with a practical question: what can the evidence prove, and what should happen next?

His experience includes advising state and tribal legislative bodies, representing public agencies responsible for substantial assets, and serving as an Administrative Law Judge for the Oklahoma Civil Service Division. That prior adjudicative work informs how he organizes a record and tests a workplace claim.

His transactional experience includes leading the borrower-side legal work for nearly $100 million in financing for a tribal casino and hotel development. The work included negotiating the project's construction and development contracts, preparing borrower legal opinions, and carrying the financing through closing.

He currently serves as a Tribal Supreme Court Justice. That experience informs how he reads a record, assesses an argument, and separates the point that may matter from the noise around it.

Credentials and verification

Training and recognition that can be checked.

Education

  • J.D. — University of Oklahoma College of Law
  • B.S. — University of Oklahoma

Admissions

  • State of Oklahoma
  • U.S. Court of Appeals, Tenth Circuit
  • U.S. District Court, Western District of Oklahoma
  • U.S. District Court, Northern District of Oklahoma
  • U.S. District Court, Eastern District of Oklahoma
Verify with the Oklahoma Bar Association

Publication

Moore Monthly: “Know Your Rights,” a legal column on what Moore drivers should know after a car accident.

Read the column

Professional and academic service

  • Oklahoma Law Review
  • Board Member, Native CDFI-Aligned Lending Institution

Trial capability

Prepared for proof, not merely for negotiation.

Early work

Preservation letters, route and venue analysis, medical proof development, damages modeling, and witness work while the record can still be protected.

A disciplined record

A litigation file should show what happened, what was known, and why it matters—not leave the important work for the eve of a hearing.

Judgment under pressure

Trial practice, administrative adjudication, tribal appellate service, and public-sector advising shape how the firm evaluates the next move.

A clear point

The goal is not to add noise. It is to put the strongest supportable issue in the right forum with the evidence needed to carry it.

Contact the firm

Tell us what happened or what your organization needs to address.

Tell us what happened or what is in front of your organization. The firm will review fit and conflicts before discussing representation or strategy. Your initial consultation is free and confidential.

Start a conversation

Free initial consultation. No obligation.