“Is a will valid if the lawyer files the will at the courthouse after the death of his client? Example: Person died 12/2005. Will was dated 7/2003, however, was not filed until 12/2005 at the court house.”
While there is no way to tell what state you are in, in all states with which I am familiar, there is no requirement for a will to be “filed” prior to the death of the decedent. Indeed there is no requirement for a will to be filed at all unless and until the will needs to be probated (reviewed and acted upon) through a probate court, and by definition the decedent will have already died by then.
It is quite common that a will would be held in a safe place, such as the testator’s attorneys office, until after the person who made the will had died, and then filed, if necessary, with the court at that time.