definiens: and shall both mean endo venous thermal ablation based on laser and/or light delivered to a vein or into a vein lumen . The term ablation s hall include : therapy, vein diameter reduction, vei n occlusion, vein damage, vein destruction, and venous reflux tr eatment . The Field does not include ( i ) multiple us e endovenous products other than laser consoles or ot her laser or light sources ; ( ii ) endovenous thermal ablation based on delivery to a vein or into a vein lumen en ergy other than laser and/or light energy, such as RF, electrical current, microwave, circulating hot fluid, and ultr asound ; ( iii ) * * ; ( iv ) methods of restoring vein va lve competence or limited, controlled vein shrinkage to restore normal venous function ; and ( v ) * * . Notwit hstanding the foregoing, the exclusion of * * from the Field s hall not be read to prevent either Licensee from ma rketing its current Covered Products listed in Exhibit A and an y 2 future Covered Product that incorporates only insub stantial changes in design and function and does no t facilitate * * more so than any current Covered Product