PTAB challenges

Proceedings overview

US Patent 9235428 has been subject to one AIA trial proceeding: IPR2026-00053, which was terminated. As it was terminated, no claims were invalidated or sustained by the PTAB. This means the patent remains untested and its claims are still presumed valid, requiring a defendant to mount their own invalidity challenge.

IPR2026-00053 — Disney Entertainment & Sports LLC v. Adeia Technologies Inc.

• Type: Inter Partes Review
• Filed: 2025-11-07
• Status: Terminated. The proceeding was terminated on 2026-03-28, which was before an institution decision would typically be rendered.
• Judge panel: Information not publicly available for a terminated proceeding prior to institution.
• Petition grounds: Details of the specific claims challenged, prior art asserted, and statutory bases (§ 102 / § 103 / § 112) are not publicly available as the proceeding was terminated prior to institution.
• Institution decision: Denied. The proceeding was terminated, and thus no institution decision was issued by the PTAB.
• Final Written Decision: Not issued, as the proceeding was terminated prior to reaching this stage.
• Settlement / termination: The proceeding was terminated on 2026-03-28. Terminations prior to institution often indicate a settlement between the parties, though the specific terms are typically confidential.
• Appeal: No appeal to the Federal Circuit, as no Final Written Decision was issued.
• Defensive value: This IPR's termination means the patent claims were not reviewed on the merits by the PTAB. It provides no claim-level invalidity findings for a defendant to leverage. The petitioner, Disney Entertainment & Sports LLC, and its privies may be subject to estoppel for the grounds raised in the petition if they proceed with litigation, though the scope of "reasonably could have raised" is less clear without an institution decision.

Strategic summary

Currently, all claims of US9235428 remain UNTESTED by the PTAB. The single IPR filed, IPR2026-00053, was terminated before an institution decision, likely indicating a confidential settlement between Disney Entertainment & Sports LLC and the patent owner, Adeia Technologies Inc. This means there are no PTAB-issued findings regarding the patentability of any claims of US9235428.

Regarding the estoppel landscape, as IPR2026-00053 was terminated before institution, the statutory estoppel provisions of § 315(e)(2) for grounds that "reasonably could have raised" are generally not triggered. However, common law estoppel principles or specific settlement agreements might still limit the petitioner (Disney Entertainment & Sports LLC) from asserting the same prior art grounds that were actually raised in their petition if the underlying district court litigation continues. For other defendants not in privity with Disney, all prior art grounds remain available for a new IPR challenge.

There are no apparent pattern signals beyond this single IPR. The fact that the IPR was filed by a defendant in a co-pending district court litigation (Adeia Technologies Inc. et al v. The Walt Disney Company et al, 1:24-cv-01231) is a common defensive maneuver. Its early termination without a merits decision leaves the patent's claims unchallenged at the PTAB.

Recommended next steps

For a defendant facing assertion of US9235428 today, since no PTAB activity resulted in claim invalidation, any defense would need to initiate a new validity challenge.

• Evaluate new IPR petitions: Given the patent's age (priority date 1999-02-01) and its focus on user interfaces for component architectures, thoroughly analyze the prior art landscape to determine if strong § 102 or § 103 challenges exist against the asserted claims.
• Analyze the current litigation: Understand the claims currently being asserted against Disney's streaming services in Adeia Technologies Inc. et al v. The Walt Disney Company et al (1:24-cv-01231) to inform potential challenges.
• Consider settlement terms: While confidential, the termination of IPR2026-00053 suggests a resolution between Disney and Adeia regarding this patent. If possible, understanding the nature of that resolution could provide strategic insights.

The absence of any active PTAB proceedings or any claims invalidated by the PTAB means that the patent owner, Adeia Technologies Inc., currently holds all claims of US9235428 as issued and unchallenged in AIA trials.