Consulting clients have included Joseph Tsai in his successful bid for the Brooklyn Nets; Association of Tennis Professionals (ATP); the XFL; the Crown League (became Hall of Fantasy League); G2 Strategic (consulting firm).

Teaching a course on the business of professional sports leagues and franchises in Columbia's Sports Management Program. Previous teaching positions include Distinguished Visiting Fellow at Penn State Law School and Professor in the Master of Sports Law program at Instituto Superior de Derecho y Economia (ISDE).

I co-founded the Animal Defense Partnership (ADP) in 2016 and continue to be involved in its day-to-day operations. ADP provides pro bono legal and other professional services to animal protection and advocacy groups.

Serve on the boards of directors, and various committees, of: Sphere Entertainment Co. and predecessor Madison Square Garden companies (2015-); member, Audit and Compensation Committees, Madison Square Garden Networks; USA Climbing and Chair of Ethics Committee (2017-2022), Governance Committee (2023-), Ethics Committee (2024-); Naismith Basketball Hall of Fame (1995-); and Animal Defense Partnership, Inc. (2016-)

As President, League Operations from 2006 to 2015, Litvin was in charge of numerous areas of the NBA’s business, including legal affairs, collective bargaining, revenue sharing, basketball operations, security, social responsibility, and player development. He ran the league’s approval process for team sales, financings and relocations and served as the chief liaison between the league and the NBA Board of Governors on a wide range of business, competition, and governance issues.Working with the NBA Board of Governors, Litvin led the development of the league's revenue sharing plans, which enable small market teams to be competitive and profitable. He also oversaw the creation of the first escrow/tax system in a professional sports labor agreement. On the basketball side, Litvin led a significant expansion of the league's use of instant replay and developed the comprehensive , data-driven program the NBA uses to evaluate and train referees, which has been a model for similar programs adopted by other leagues.Prior to serving as President, League Operations, Litvin served in various roles in the NBA legal department, including as Executive Vice President and General Counsel (2000-2006). In addition to day-to-day responsibility for a broad range of legal and business affairs, Litvin managed the first-ever collectively bargained salary cap arrangement between a sports league and its players.