Conversation so far:
who was the gretchen carlson sexual harassment lawsuit against?
she filed a sexual harassment lawsuit against Fox News chairman Roger Ailes in the Superior Court of New Jersey.
what year was the lawsuit?
July 6, 2016.
did anyone act as a witness for her?
After Carlson came forward, six more women spoke to Gabriel Sherman of New York magazine, alleging that Ailes had sexually harassed them.
which six women also accused him?
CANNOTANSWER.

Question: how long did the lawsuit go on?
Self-contained rewrite: how long did the sexual harassment lawsuit against Fox News chairman Roger Ailes lawsuit go on?