Yes, you can. Fortunately in Washington the way the court looks at it is they measure each parties wrongdoing, or each parties negligence. Even if you are at fault for part of it, or even if you did something wrong, you can still file a claim and then the jury sorts it out depending on who is more at fault. Again, in Washington we’re really fortunate because even if you’re 5% at fault, you still can recover for your injuries. It’s always wise to talk to a lawyer and find out if the particular facts of your case work in order to file a lawsuit.
