The U.S. Court of Appeals for the Federal Circuit, led by Chief Judge Kimberly Moore, vacated a PTAB decision declaring certain claims of Sisvel's data transmission patent unpatentable. The court's review revealed that the PTAB incorrectly interpreted claim limitations and could not substantiate its findings with adequate evidence from the prior art reference 'Sachs'. This ruling underscores the importance of precise claim construction and evidentiary support in patent evaluations, influencing the ongoing discourse around patent validity assessments.
The CAFC disagreed with the PTAB's conclusion on the patentability of Sisvel's claims, noting errors in how limitations were construed and evidence evaluation.
The Board's decisions were questioned by the CAFC regarding their reliance on the prior art 'Sachs' and the construction of key limitations in Sisvel's patent.
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