Xerox's appeal against the PTAB's invalidation of its patent for content delivery techniques was unsuccessful. The U.S. Court of Appeals for the Federal Circuit affirmed the PTAB's decision, citing that the patent claims did not explicitly include an unexpected response, which Xerox argued was required. Snap, Inc., Meta, and X Corp had challenged Xerox's patent through inter partes review petitions, leading to a determination of unpatentability by the PTAB. The appeals court found no error in the PTAB's rejection of Xerox's claims about the language used in the patent.
"If Xerox wanted its more limited construction, it should have written the claims as it did in the substitute claim," said the CAFC.
Xerox lost an appeal against Snap, Inc., Meta, and X Corp over the PTAB's invalidation of Xerox's patent on content delivery techniques.
The PTAB determined that the petitioners had collectively established unpatentability of Xerox's patent through their inter partes review petitions.
The CAFC rejected Xerox's argument regarding claim limitations, stating that the claims do not recite an unexpected response.
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