In Sigray, Inc, v. Carl Zeis X-Ray [“Zeiss”], appeal 2023-2211 (Fed. Cir., May 23, 2025), the panel reviewed the Board’s decision in an IPR in which Claims 1-6 of Zeiss patent no. 7,400,704 were held not to be unpatentable over Jorgensen. Claim 1 of the ‘704 patent reads as follows:
As explained by the panel:
“Projection magnification…utilizes diverging rays that spread out as they travel. The distance between the rays increases after interacting with the sample but before being received by the detector. As a result, the generated image is larger than the sample itself, … A larger distance between the source and the…
