David M. Tenner

Email: tenner@ridleylaw.com | Download V-card

David Tenner Trial Lawyer ArbitratorExperience

            David Tenner is a trial lawyer, an arbitrator and a special master appointed by Denver-area trial courts.  His trial practice focuses on the representation of businesses and individuals in both state and federal court and in arbitrations.  He tries complex business, intellectual property and tort cases to both judges and juries.  He also tries complex claims in both domestic and international arbitrations.  Mr. Tenner regularly provides clients with pre-litigation advice focusing on the resolution of disputes prior to the initiation of formal claims.  He represents a broad range of clients; from Fortune 500 companies, to closely-held businesses to individuals.

            In addition to being a trial lawyer, Mr. Tenner is an arbitrator, a special master to area courts and a trained mediator.  He is a member of the commercial panel of the American Arbitration Association. Mr. Tenner has been appointed on numerous occasions as a special master in complicated matters pending before both the Denver and Arapahoe District Courts.  These matters range from complicated business and real estate cases to multi-state product liability litigation to employment claims.  He is a Fellow of the Academy of Court Appointed Masters and in 2015 he was appointed to the Academy’s Board of Directors.  He currently serves as ACAM’s secretary.

           Mr. Tenner has been recognized by his peers on the Colorado Super Lawyers list in the area of business litigation in 2009, 2010, 2011, 2013, 2014, 2015, 2016 and 2017.  He received his AV rating from Martindale Hubbell in March 1993, becoming Denver’s youngest AV-rated attorney.  More recently, he was selected as Colorado’s Best Arbitrator by Law Week Colorado in 2012, 2013, 2014, 2015 and 2016.

Representative Matters

  • Represented inventors in claims against a Fortune 500 company for failure to pay royalties and failure to market inventors’ oil waste  remediation technology.
  • Represented lead underwriters of municipal bond securities offering against allegations of securities fraud.
  • Represented subsidiaries of Fortune 500 manufacturing company against allegations of defective manufacturing and defective product design.
  • Represented cattle rancher in lawsuit arising out of monensin poisoning of cattle.
  • Represented investors in NASD and FINRA arbitrations.
  • Represented patient suffering from benzodiazepine addiction in claims against her former physician for psychiatric malpractice and falsification of medical records.
  • Represented Colorado law firm against allegations by former client of legal malpractice and improperly withdrawing as counsel in prior litigation.
  • Represented Colorado law firm in litigation against its former partner for claims arising out the partner’s withdrawal from the firm, along with other attorneys and staff.
  • Represented former client in claims of legal malpractice in the handling of client’s patent application for waterproofing technology before the United States Patent and Trademark Office.
  • Represented majority shareholders of closely held information technology company against claims of fiduciary duty, minority shareholder oppression and valuation of minority shareholder’s interest by former minority shareholder. 
  • Represented home products manufacturing company in litigation brought by former distributor alleging improper termination of distribution agreement.
  • Represented Colorado company and its officers against patent infringement claims concerning RFID technology brought by competitors and competing patent holders. 
  • Advised Fortune 500 company and its in house counsel concerning its investigation of allegations of improper conduct and resulting exposure to the corporation.
  • Represented policyholders in coverage dispute against insurance company concerning coverage for wrongful death claims under motor vehicle policy.
  • Represented policyholders in arbitration claims arising out insurer’s failure to pay for treatment of biologically-based mental illness at a residential treatment facility.
  • Represented homeowners association and members of its board of directors against allegations of improper conduct by the board.
  • Represented Colorado aviation company in claims arising out of airplane/bus collision at Denver International Airport.
  • Represented Colorado homebuilding company and its owner in litigation against Colorado savings loan association for lender liability claims arising out of a series of loan modifications and renewals for the building of residential and commercial buildings.
  • Represented sales and management employees of software technology company against claims by their former employer that they breached confidentiality agreements and stole trade secrets when they left the company.
  • Provided expert testimony concerning a lawyer’s standard of care, including both pre-trial Daubert hearing and trial testimony, in legal malpractice litigation involving representation of client in underlying eminent domain claim.
  • Provided testimony concerning the reasonableness of attorneys fees in Federal and State Court matters.
  • Pro bono representation of former inmate in his United States District Court claim that he was wrongfully arrested, without probable cause, by the Colorado Springs Police Department.

Awards and Honors

2018 Barrister's Best David Tenner Badge

  • Best Lawyers Arbitration and Commercial Litigation ( 2017-2020)
    Best Lawyers Award Badge
  • Colorado Super Lawyers: Business Litigation, Alternative Dispute Resolution (2009-2011, 2013-2019)

  • Colorado Super Lawyers: Super Lawyers 10 Year

    David Tenner

    Rated by Super Lawyers

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  • Colorado Super Lawyers: Top 100 Lawyers in Colorado 2016

  • Martindale-Hubble: AV rated (1993)
  • Law Week Colorado – Barrister’s Best:  Colorado’s Best Arbitrator (2012, 2013, 2014, 2015, 2016, 2017)
  • Martindale-Hubbell
    AV® Preeminent

Professional Affiliations

  • Colorado Bar Association (Board of Governors, 2001 – 2003; Ethics Committee, 1993 – 1996)
  • American Bar Association (Litigation, Dispute Resolution Section and Business Law Dispute Resolution Committee)
  • William E. Doyle Inn of Court (Founding Member and Master; President, 1997 – 1998; Executive Committee, 1997 – 2017)
  • American Arbitration Association Commercial Panel/Roster of Neutrals
  • Fellow, Academy of Court-Appointed Masters (Board of Directors, 2015 – present)
  • Fellow, The American Bar Foundation
  • Faculty of Federal Advocates
  • Colorado Trial Lawyers Association
  • Colorado Supreme Court Grievance Committee, Hearing Board Member
  • Volunteer Attorney, September 11 Victim Compensation Fund
  • Volunteer Attorney, Metro Denver Volunteer Lawyers/Thursday Night Bar Program
  • Mentor Attorney, Faculty of Federal Advocates Counsel – Co-Counsel Program
  • NITA training and certification, 1989

Lectures and Publications

“Setting the Stage for a Successful Arbitration” 2016 ABA Annual Arbitration Institute

“30 Arbitration Tips, From Both Sides of the Panel Bench” 2014 Colorado Statewide ADR Conference

“Surviving Your Deposition: A Primer for the Uninitiated” The Colorado Real Estate Journal and HomeBuilder Magazine

“Common Issues in Legal Malpractice Litigation” The Colorado Lawyer

“Is Arbitration Broken? And How Can It Be Fixed?” American Bar Association Business Law Section Meeting

“When Somebody Else Decides: Arbitrations and Special Master Proceedings”    2012 Colorado Judicial Conference



  • Georgetown University Law Center, J.D., with honors 1985
    • Instructor, Legal Research and Writing
  • Colorado College, B.A. 1981

Bar Admissions

  • Colorado Supreme Court 1985
  • U.S. District Court, District of Colorado 1985
  • U.S. Court of Appeals, 10th Circuit 1985
  • U.S. Court of Appeals, Federal Circuit 2006

2018 AAA Panel20Member Color WebDownload

David Tenner:
Email: tenner@ridleylaw.com

Contact Us


303 16th Street, Suite 200 Denver, CO 80202

Email: inquiry@ridleylaw.com

Phone: (303) 629-9700

Fax: (303) 629-9702