PTAB challenges

Proceedings overview

There is one AIA trial proceeding on file for US Patent 8796779, which resulted in a discretionary denial of institution. This means the patent claims have not been challenged on the merits at the PTAB, and the patent's validity remains undiminished by AIA trial proceedings.

IPR2025-01053 — United Microelectronics Corporation et al. v. Advanced Integrated Circuit Process LLC

• Type: Inter Partes Review
• Filed: 2025-05-23
• Status: Discretionary Denial - The PTAB declined to institute the IPR.
• Judge panel: Not publicly available in the provided information.
• Petition grounds: Not publicly available in the provided information.
• Institution decision: Denied. The institution was denied procedurally, specifically a "Discretionary Denial." [cite: https://portal.unifiedpatents.com/ptab/case/IPR2025-01053]
• Final Written Decision: Not applicable, as institution was denied.
• Settlement / termination: Not applicable, as institution was denied.
• Appeal: Not applicable, as institution was denied.
• Defensive value: The discretionary denial means the patent owner prevailed at the institution stage, and the patent claims were not reviewed on their merits by the PTAB. This indicates that an IPR-based defense on the same grounds raised by this petitioner would likely be more difficult.

Strategic summary

Currently, all claims of US Patent 8796779 remain UNTESTED by a full AIA trial proceeding on the merits. The sole IPR filed, IPR2025-01053, was denied institution on discretionary grounds, meaning the PTAB did not reach the merits of the prior art arguments presented by the petitioner. This significantly strengthens the patent owner's position regarding these specific claims against future challenges based on the same or substantially similar prior art, as the estoppel provisions of § 315(e)(2) may apply to United Microelectronics Corporation et al. and their privies. The current assignee is Advanced Integrated Circuit Process LLC, which acquired the patent on 2024-07-30, suggesting a potential strategy for active assertion and enforcement of the patent.

The absence of any instituted IPRs or other AIA trial proceedings means there is no PTAB decision on the patentability of any claim in US8796779. This is a strong signal that the patent claims have not been successfully challenged to date in the PTAB.

Recommended next steps

For a defendant facing assertion of this patent today, it is important to understand that no claims have been invalidated by the PTAB. The denial of institution in IPR2025-01053 means the claims are still presumed valid. While the specific grounds for discretionary denial are not detailed in the provided information, such denials can be based on various factors, including parallel district court litigation, advanced stage of litigation, or specific PTAB rules. A potential defendant would need to conduct their own prior art search and analysis to identify new grounds or strategically differentiate from those raised in IPR2025-01053, if considering a new IPR petition.