Mark I. Harrison, Esq. has been a civil and appellate litigator for over 50 years in Tort, Antitrust, and Commercial Cases. He has extensive experience litigating and testifying in cases involving
Legal Malpractice, Legal Ethics, and Judicial Ethics. Mr. Harrison frequently serves as an expert witness in cases concerning the
Standard of Care, Breach of Fiduciary Duty, and the Reasonableness of Attorneys' Fees. His client representation includes lawyers, law firms, judges and other licensed professionals.
Mr. Harrison has served as a consulting and/or testifying legal or judicial ethics expert witness in more than 160 cases and has been deposed or testified at trial in more than 20 matters in the past 10 years. He has been admitted to practice before all courts in Arizona since May, 1961 - United States District Court--District of Arizona, the United States Court of Appeals for the Ninth and Federal Circuits, and the United States Supreme Court. He has also been admitted to practice in the state of Colorado since 1991.
Areas of Specialization:
- Judicial Ethics and Disqualification
- Legal Malpractice
- Attorney Breach of Fiduciary Duty
- Attorney Securities Fraud
- Attorney Aiding and Abetting Clients' Torts
- Partnership Disputes
- Law Firm Dissolution Disputes
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