State of New York (1974)
Supreme Court of the United States (1984)
U.S. Court of Appeals: 1st Circuit (1981), 2nd Circuit (1975), Federal Circuit (1984)
U.S. District Court: Northern District of California (1995); District of Colorado (2003); Eastern District of Michigan (1985); Eastern District of New York (1975); Southern District of New York (1975); Eastern District of Texas (2011).
U.S. Patent and Trademark Office (1983)
Admitted to the National Panel of Arbitrators, American Arbitration Association (2017)