Markusson, Green & Jarvis, P.C.

Markusson, Green & Jarvis, P.C.

Markusson, Green & Jarvis was established in 1984 under a predecessor firm name and was re-established under its present name in 1996.

Firm Overview

MGJ has a fundamental commitment to providing first-rate legal services to our clients. We offer a broad range of experience in several litigation arenas and our clients include not only insurance carriers and their insureds, but also national and local corporations. Our services go beyond litigation support, reaching to employment counseling and commercial transactions as well. Additionally, MGJ has recently welcomed a new partner who is an experienced family law, estate planning and probate attorney, which has expanded the services MGJ can offer to its clients.

MGJ is the approved panel defense counsel for many insurance carriers. We work closely with clients and their insurance carriers to provide cost-effective litigation-support solutions that are successful and practical. We work with claim handlers to develop early litigation plans and budgets to ensure highly effective representation and client satisfaction. We strive to create long-lasting client relationships and build trust with those whom we represent.

MGJ handles significant litigation in Colorado, Wyoming, New Mexico, Arizona and Utah. We also have appeared in numerous U.S. District Courts and U.S. Circuit Courts of Appeal, as well as in the United States Court of Federal Claims.

Our attorneys' backgrounds are diverse, with many firm members maintaining an active trial practice in multiple jurisdictions. Our attorneys work in teams, allowing senior partners to mentor associates and offer effective, disciplined training while giving associates the opportunity to hone their skills in critical case work. MGJ is a strong supporter of Alternative Dispute Resolution as a method of minimizing both the costs of litigation and its inherent risks. Our firm uses alternative dispute resolution to tap into our extensive experience in successful arbitration and mediation and achieve results and satisfying outcomes for our clients. We have built established relationships with mediators in the Denver legal community. Additionally, the diversity of our practice and our clients' complex needs means we have a wide variety of experts and consultants to use in customizing a client's legal defense team. MGJ hand-picks experts who are best suited to each client's legal matter, and actively maintains a bank of high-quality experts that can be tapped for a multitude of case needs.

The firm has received an AV rating, the highest level of professional excellence.

Main Office

Main Office
1660 Lincoln Street, Suite 2950
Denver CO 80264




Our founding partners are the former in-house counsel for a Fortune 500 corporation.

They have handled most every type of commercial dispute in their careers. Our experience includes working with business owners, executives, and in-house counsel representing businesses in disputes over money and property in lawsuits for:

Breach of Contract: Mergers and acquisitions, purchases and sales of securities, transactions in real estate and other business assets and agreements to provide goods or services.

Interference with Contract: A third party's hindering or preventing performance of an agreement.

Fraud and Deceptive Trade Practices: Misrepresentations and fraud in business transactions.

Abuses of Trust: Breaches of fiduciary duties by persons in positions of trust, including corporate officers and directors, agents, trustees, partners or majority shareholders.

Employer/Employee Disputes: Overtime, disabilities, health and pension benefits, retaliation and discrimination (age, race and gender).

Collection of Debt: Promissory notes, guaranty agreements and mortgages/deeds of trust.

Indemnity: Drafting, interpretation and defense of claims for indemnity by parties to a contract. This includes contractual insurance obligations as well.

Implied and Express Warranties: Common disputes involving the quality of goods and services delivered including disclaimers or limitations on such warranties as expressed or contracted for.

Agreements Limiting Competition: Non-competition, non-solicitation and non-disclosure agreements by former business owners and employees. These suits often include requests for emergency relief such as a restraining order or pre-trial injunction.

Misuse of Intellectual Property: Unauthorized use of patents, copyrights, trademarks, trade dress, service marks, and trade secrets.

Antitrust Violations: Monopolization of a line of business, group boycotts, price discrimination, tying arrangements and conspiracies to fix prices, allocate customers, divide territories or otherwise prevent competition.

Contact one of our managing partners, Keith Jarvis or Dennis Markusson, if you have a business dispute and need legal help.

Dennis Markusson

Markusson, Green & Jarvis, P.C.

Dennis Markusson is a founding partner of Markusson Green & Jarvis. He served as national counsel for a national corporation for the defense of that company's asbestos litigation until 2014. He continues to works with clients on asbestos issues, litigation and factors affecting insurance coverage, including reinsurance. Dennis practices in the areas of products liability, toxic torts, commercial litigation, contract law, and construction defect/contractor liability as well. Additionally, he serves as an asbestos expert witness.

Firm Service/History

Prior to joining MGJ, Dennis directed Johns Manville Corporation's asbestos litigation group. He was responsible for the direction and coordination of Johns Manville's asbestos litigation throughout the United States. He served as Assistant General Counsel and Vice President of Johns Manville Sales Corporation. Additionally, he was responsible for the company's litigation within the Unites States OSHA-related matters, and was one of Johns Manville's lead counsel in its Chapter 11 re-organization.

Before founding MGJ, Dennis was a partner in the Akron, Ohio firm of Weick & Genovese, and he served as assistant counsel to General Tire & Rubber CO.

Dennis founded MGJ in 1984 with his partners Keith Jarvis and James Green.

Professional Activities

Dennis is licensed to practice law in Colorado and Ohio, as well as the United States District Court for the District of Colorado and for the Northern District of Ohio, United States Sixth, Ninth and Tenth Circuit Courts of Appeal, and the United States Claims Court.

His professional affiliations also include the American Bar Association Litigation and Tort and Insurance Sections, the Colorado Bar Association, the Colorado Defense Lawyers Association (CDLA), the Defense Research Institute (DRI), the Denver Bar Association and the International Association of Defense Counsel and IADC's Toxic Torts Committee.


Ohio State University
Juris Doctorate,