Parties to a lawsuit generally have an absolute right to nonsuit (dismiss) their own claims for relief at any time during the litigation until they have introduced all evidence other than rebuttal evidence at trial.
In Washington State, parties to a lawsuit do indeed have the right to voluntarily dismiss their own claims, which is often referred to as a 'nonsuit.' This right is typically absolute and can be exercised at any point during the litigation process, as long as the party has not rested their case by introducing all their evidence at trial, excluding rebuttal evidence. This is governed by the Washington Rules of Civil Procedure (CR 41), which outlines the procedures for voluntary dismissal by the plaintiff. However, there may be certain restrictions or consequences for exercising this right, such as court costs or the potential for the dismissal to be with prejudice, meaning the claim cannot be refiled in the future. It's important for parties considering a nonsuit to consult with an attorney to understand the implications and ensure compliance with the relevant rules and procedures.