Cline tried to sue Ashland Inc., Chevron Phillips Chemical, and ExxonMobil Corp., which produced the benzene he believed caused his disease. The judge presiding over the case ruled in favor of the defendants, stating that Cline waited too long to sue.

The judge’s ruling was based on a 1979 precedent that held that the two-year statute of limitations begins on the date of the last incidence of chemical exposure.

In Alabama, another precedent allows lawsuits only by persons who can show “manifest harm” or demonstrable injury. But because Cline’s illness was not diagnosed until 1999—four years after his last exposure—there was no allowable time period during which he could have sued, according to both precedents.

Cline’s lawyer, Leslie Brueckner, is arguing that the state ruling violated the 14th amendment, denying Cline due process of law.

If the U.S. Supreme Court accepts the case, oral arguments should begin sometime in the fall or winter.