Mark Longo provides economic and financial damages consulting and expert witness assistance to clients and counsel in commercial disputes. He has been retained as an expert on economic damages for cases in federal and state courts and has testified as an expert witness at deposition and arbitration. He has over 10 years of experience consulting on complex financial and accounting matters.

He has performed analyses of actual loss, unjust enrichment, reasonable royalties, lost profits, business valuations, business interruption, fixed and variable costs, investment performance, lost compensation, prejudgment interest, and more. He has also provided consulting services to small businesses in the areas of accounting and financial management.

He has worked on cases involving claims of breach of contract, patent infringement, trademark and copyright infringement, trade secret and confidential information misappropriation, breach of fiduciary duty, defamation, class action disputes, shareholder disputes, fraud, construction disputes, and other types of business disputes.

Mark has also been involved in complex litigation matters for a wide variety of industries, including telecommunications, computer and internet software, biotechnology, medical products, financial services, private equity, manufacturing, industrial and consumer products manufacturing and distribution, construction, and automotive, and others.