In 1993, Bransten was elected to the
New York Civil Court, and began serving in 1994. She was appointed an acting trial level
New York State Supreme Court justice in 1996, where she presided over a General Trial and then a Matrimonial Part. In November 1999, Bransten was elected to the New York Supreme Court in
Manhattan. She spent seven years presiding over a Medical Malpractice Part within the Supreme Court, from 2001 until 2008. In March 2008, Bransten was assigned to the Commercial Division, and served there until her retirement in 2018. In 2023, Fordham Law School renamed the institute, the Eileen Bransten Institute on Complex Commercial Litigation. New York Supreme Court Appellate Division justice (and former Commercial Division justice) Saliann Scarpulla once served as Bransten's principal court attorney, and New York Commercial Division justice Jennifer G. Schechter once served as Bransten's law clerk. challenges to largest ever (at the time) arbitration awards involving securities
futures; a lawsuit involving
Hexion Specialty Chemicals financing of its
takeover bid for the
Huntsman Corporation; a dispute over the application of a New York State sales tax law on
Amazon; a suit by professional golfer
Vijay Singh against the
PGA Tour; an investor suit against
Outcome Health and its principals
Rishi Shah and Shradha Agarwal; litigation over the restructuring of paper maker
Norske Skogindustrier ASA; and a suit by Norex Petroleum Ltd. against
Leonard Blavatnik and
Victor Vekselberg over control of a Siberian oil field. In 2018, Bransten read aloud her 40-page legal opinion, in a case involving art looted by the Nazis, saying, among other things: "'New York is not and shall not become a safe harbour for [art pillaged] during Nazi genocide....'" == Positions and honors ==