PTAB challenges

Proceedings overview

There is one active AIA trial proceeding on US patent 6182128, which is currently at the "Trial Instituted" stage. This means the patent owner is actively defending the claims against challenges, and no claims have been invalidated or sustained yet.

IPR2026-00047 — Amazon Web Services, Inc. et al. v. Touchmusic Entertainment LLC

• Type: Inter Partes Review
• Filed: 2025-10-10
• Status: Trial Instituted. The PTAB has decided to institute an inter partes review and the trial phase has begun.
• Judge panel: Information not publicly available at this stage through a quick search.
• Petition grounds: Information not publicly available at this stage through a quick search, but would typically challenge claims under 35 U.S.C. §§ 102 and/or 103 using prior art.
• Institution decision: Instituted. The institution decision date is not explicitly provided in the canonical list, but the status indicates it has occurred. The reasoning for institution would typically involve the petitioner demonstrating a reasonable likelihood that at least one of the challenged claims is unpatentable.
• Final Written Decision (if issued): Not yet issued, as the proceeding is in the "Trial Instituted" stage.
• Settlement / termination: Not yet settled or terminated.
• Appeal: No appeal has been filed, as there is no Final Written Decision yet.
• Defensive value: This proceeding is ongoing. A defendant facing assertion of this patent will need to monitor the progress of IPR2026-00047 closely, as the outcome will directly impact the patent's validity.

Strategic summary

Currently, there is one active Inter Partes Review, IPR2026-00047, challenging claims of US6182128. Since the status is "Trial Instituted," no claims have been definitively canceled or sustained by a Final Written Decision yet. All claims remain untested as of now, as the trial is ongoing.

The estoppel landscape related to IPR2026-00047 will depend on its eventual outcome. If a Final Written Decision is issued, 35 U.S.C. § 315(e)(2) would bar the petitioner (Amazon Web Services, Inc. et al.) and their privies from raising any ground they raised or reasonably could have raised during the IPR. For other defendants not in privity with the petitioner, prior-art grounds not asserted or those that couldn't have been reasonably raised in this IPR may still be available for challenges.

The involvement of Amazon Web Services, Inc. et al. as a petitioner suggests a significant challenge to the patent. The fact that the IPR has been instituted indicates that the PTAB found a sufficient basis to proceed with a full review of at least some of the challenged claims.

Recommended next steps

Since IPR2026-00047 is in the "Trial Instituted" stage, the key milestone to track is the Final Written Decision (FWD). The PTAB has a statutory one-year deadline to issue a FWD from the date of institution. Further details regarding the institution decision (such as the specific claims challenged and the grounds for institution) would be available through the USPTO PTAB E2E system by searching for IPR2026-00047. Monitoring the official PTAB docket for this IPR will provide updates on procedural events, including the FWD due date and any oral hearing schedules.