Mr. Koch's practice includes complex commercial litigation, litigation management, insurance coverage and extra-contractual defense litigation, the construction process, construction litigation and arbitration, contract interpretation, sports and entertainment law, fidelity, surety and financial institution bonds, lawyer's malpractice, errors and omissions, life and long term care and fine arts coverages.

Mr. Koch participated in negotiations in Egypt after the Yom Kippur War leading to removal of ships sunk in the Suez Canal; represented a consortium of companies involved in reconstructing Kuwait and its oil fields after Operation Desert Storm; represented a major international insurance company in developing indemnity agreements, construction bonds, and guarantees for use with contractors in twelve foreign countries; represented the lead insurer in the adjustment of the business interruption claims of the Titan IV rockets manufacturer when the solid rocket fuel manufacturing plant supplying that missile program was destroyed in an explosion. And Mr. Koch has defended parties in complex litigation involving nuclear power and fossil fuel plants; the shipping industry; the former Louisiana Sunday Closing laws; and the resurfacing of both runways of the New Orleans International Airport (MSY) in the 1980's. Mr. Koch currently represents the international construction management firm managing all construction at the New Orleans Louis Armstrong International Airport (MSY).

As an appellate practitioner, Mr. Koch has briefed the United States Supreme Court on the Insurance Industry's position on coverage issues regarding the Security Dealer's Blanket Bond, and the New Zealand Supreme Court on the interpretation by United States Courts on coverage issues related to the Financial Institution Bond.

Mr. Koch is listed in Best Lawyers in America (Construction), is a Fellow of the American College of Construction Lawyers (Founder and Former Chair of its Insurance Industry Committee and a former member of its Board of Governors), and is a consultative member of the American Law Institute. Mr. Koch has chaired the American Bar Association's Fidelity and Surety Law Committee, Co-Chaired the ABA's first three National Institutes of the Forum on the Construction Industry, chaired six ABA National Law Institutes, founded and served as first Chair of the Louisiana Bar Association's Section on Construction, Fidelity and Surety Law, served as a Vice Chair of the Fidelity and Surety Law Committee of the International Association of Defense Counsel, currently serves on both the Surety Claims Institute Board of Governors and the Advisory Council of the Chief Judge of the Court of Federal Claims in Washington, D.C., is a Trustee of the Federalist Society, is a member of the National Bond Claims Association, is one of the four Advisors Emeritus of the Fidelity Law Association and is a Life Fellow of both the American and Louisiana Bar Foundations.