Patent ID: 7670529

Claim:
A method for patterning a substrate with a mold assembly, the substrate having first and second opposed sides, the method comprising the steps of: positioning the substrate on a chuck having a cavity, the first side of the substrate positioned toward the mold assembly, and the second side of the substrate positioned toward the chuck; obtaining a first spatial relationship between the substrate and the mold assembly such that the first side of the substrate is in superimposition with the mold assembly, the mold assembly and the first side of the substrate having a material positioned therebetween; forming a pattern in the material on the first side of the substrate with the mold assembly, defining a first patterned layer; obtaining a second spatial relationship, differing from the first spatial relationship, between the substrate and the mold assembly such that the second side of the substrate is in superimposition with the mold assembly, with the mold assembly and the second side of the substrate having a material positioned therebetween, wherein obtaining the second spatial relationship includes positioning the substrate on the chuck such that the first patterned layer is within the cavity of the chuck to minimize damage to the first patterned layer during patterning of the second side of the substrate; and forming a pattern in the material on the second side of the substrate with the mold assembly, defining a second patterned layer.