[1] She is Founding President of the Center for Women in Law, and co-chaired the New York State Bar Association’s Task Force on the Future of the Legal Profession.
Addison is the daughter of Marcus and Theresa Leuchter, Nazi concentration camp survivors who immigrated to the United States in 1946.
Addison's other cases include the jury trial for Mars Incorporated involving infringement of one of its pet food patents, in which, as lead counsel, she obtained a judgment for monetary damages and a permanent injunction requiring consumer goods giants Heinz and Del Monte to remove six infringing product lines from the market (Mars, Incorporated v. H.J.
Addison was lead counsel for Handy Dan Hardware in the trial of the case that challenged the constitutionality of Texas Blue Laws (Retail Merchants Association of Houston v. Handy Dan Hardware), leading to their repeal in 1985, and making it possible for Texans to shop on Sunday.
[15] Prior award recipients include U.S. Supreme Court Justices Sandra Day O'Connor and Ruth Bader Ginsburg.
[16] Addison co-chaired the New York State Bar Association's Task Force on the Future of the Legal Profession.
[17] The Center launched in April 2009 with its inaugural Women's Power Summit on Law and Leadership where the keynote speaker was The Honorable Sandra Day O'Connor.
[35] In 2014, Addison was honored as "Woman of the Year" by the Police Athletic League of New York City.