Sigray v. Carl Zeiss: Patent Anticipation and Obviousness (Fed. Cir., May 23, 2025) 2023-2211
This is an opinion from the United States Court of Appeals for the Federal Circuit regarding a patent dispute between Sigray, Inc. and Carl Zeiss X-Ray Microscopy, Inc. The case involves U.S. Patent No. 7,400,704, owned by Zeiss, which covers X-ray imaging systems with projection magnification. Sigray challenged the patent's validity through an inter partes review at the Patent Trial and Appeal Board (PTAB), arguing certain claims were anticipated or rendered obvious by prior art, specifically a reference called Jorgensen. The Court of Appeals reversed the PTAB's decision concerning claims 1…
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