Patent ID: 8398841

Claim:
A method comprising the steps of: providing a metal enclosure of an electronic device having a surface; performing a first anodization process on the surface to create a first anodized layer; removing the first anodized layer at select locations, wherein the select locations are a plurality of holes arranged in a pattern formed within the first anodized layer and having a pitch between the plurality of holes between about 10 to 200 microns; and performing a second anodization process at the select locations to create a second anodized layer within the plurality of holes, wherein the first anodized layer and the second anodized layer have different properties and the second anodized layer is more resistant to scratching or abrasion than the first anodized layer and extends above the top surface of the first anodized layer, and wherein the second anodized layer protects the first anodized layer from scratching or abrasion.