1. A method, comprising: receiving, by a computer, a layer design file based on a layer template, wherein the layer design file comprises a non-metal layer design portion, wherein the layer template comprises reserved regions indicating locations of the layer template where circuits or devices are prohibited; associating a patterned overlay with a first one of the reserved regions; generating a production layer design file based on the layer design file, wherein generating the production layer design file comprises: replacing the patterned overlay with a production overlay; and disposing an empty overlay in a second one of the reserved regions in the non-metal layer design portion; and fabricating, by a fabrication system, one or more devices based on the production layer design file.