This is a very fact specific question. Short answer, yes. Long answer, maybe. For example, if a car accident personal injury case went to trial, a verdict was hard (or even if it was settled) then you discover you have more injuries, you can't bring a new suit.
Jules Gordon MessingerPersonal Injury LawyerBrooklyn, NY ·
A ruling does not automatically apply retroactively and usually does not. A court can decide as part of a decision that application will be retroactive.