Executive Summary
The PTAB denied AT&T's IPR against Daingean Technologies, finding that the Petitioner failed to show a reasonable likelihood of success regarding claims related to code block segmentation and HARQ-ACKs. The denial hinged on insufficient support for the 'multiple CB/CBG limitation' in both cited prior art references.
Practitioner Note
This case demonstrates the evidentiary and procedural standards applied in patent matters before local courts. Understanding the court's reasoning in AT&T Corp et al. vs Daingean Technologies Ltd. is valuable context for structuring arguments or assessing risk in similar proceedings.
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