LAWYER PROFILE
Colin O'Brien

Colin O'Brien

USA 2026

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Ranked in 1 practice area

About

Provided by Arnold & Porter

USA

Practice Areas

Colin O'Brien practices in complex commercial litigation and arbitration. Mr. O'Brien focuses on complex contract and operational disputes, contract negotiations, and strategic positioning for negotiation and litigation. He has handled a broad range of substantive matters, including natural gas and processing disputes, class action disputes, disputes over the scope of contractual performance and payment obligations, insurance coverage disputes, international mining disputes, and IP litigation. Mr. O’Brien also maintains an active pro bono practice with an emphasis on protecting the rights of the accused and civil rights generally.

Mr. O'Brien graduated first in his class at Washington University in St. Louis School of Law, where he was an Executive Editor on the Washington University Law Review. Prior to joining the firm, Mr. O'Brien worked at another global law firm and clerked for the Honorable David M. Ebel of the United States Court of Appeals for the Tenth Circuit.

Chambers Review

Provided by Chambers

Chambers Guide to the USA

Litigation: General Commercial - Colorado

Band 4
Band 4

Individual Editorial
Colin O'Brien has trial experience in federal and state courts and before arbitration panels. He also provides strategic pre-litigation counseling on complex contract, financial and regulatory disputes.

Strengths

Provided by Chambers

  • Colin puts everything into his representation of a client, he makes your problems his problems. He is dedicated, careful, thorough and thoughtful.

    Litigation: General CommercialChambers Guide to the USA
  • Colin is an excellent litigator.

    Litigation: General CommercialChambers Guide to the USA
  • Colin is outstanding. He is well organized and an effective advocate.

    Litigation: General CommercialChambers Guide to the USA
  • Colin is a hard worker who is creative and result-oriented.

    Litigation: General CommercialChambers Guide to the USA
  • Colin understands the big picture and the strategy and how that aligns with the overall business goals. He also really owns every last detail of a matter and is tremendously responsive.

    Litigation: General CommercialChambers Guide to the USA

Ranked Individuals at Arnold & Porter (170)

California

Colorado

District of Columbia

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