PTAB challenges

Proceedings overview

There is one active AIA trial proceeding on US patent 7840427, which is currently pending. This means no claims have been invalidated or sustained by the PTAB yet. For a defendant, this indicates the patent claims remain untested in post-grant proceedings, and the patent's validity has not yet been challenged to a final decision.

IPR2026-00305 — Uber Technologies, Inc. et al. v. Carma Technology Ltd.

• Type: Inter Partes Review
• Filed: 2026-03-12
• Status: Pending – The proceeding is in its early stages, and no institution decision has been issued by the PTAB as of the current date.
• Judge panel: Information regarding the specific judge panel for this pending IPR is not yet publicly available.
• Petition grounds: The specific claims challenged, prior art references, and statutory bases (§ 102 / § 103 / § 112) for the petition are not yet publicly detailed in the provided information or readily available from general public PTAB search results at this early stage.
• Institution decision: Not yet issued. The statutory deadline for an institution decision is typically six months from the petition's filing date, which would be around September 12, 2026, for this proceeding.
• Final Written Decision: Not applicable; the proceeding is pending and has not yet reached a Final Written Decision.
• Settlement / termination: Not applicable; the proceeding is pending.
• Appeal: Not applicable; the proceeding is pending and no final decision has been issued that could be appealed.
• Defensive value: This active IPR signifies that the validity of at least some claims of US7840427 is being challenged by Uber Technologies, Inc. et al. However, since it is in the early "pending" stage, no claims have been invalidated or confirmed. Potential defendants should monitor this IPR closely, as an institution decision (expected around September 2026) will clarify which claims, if any, the PTAB believes have a reasonable likelihood of being found unpatentable.

Strategic summary

Currently, all claims of US7840427 remain untested by a final PTAB decision. IPR2026-00305, initiated by Uber Technologies, Inc. et al., is in its preliminary stages, with the institution decision pending. This means there is no current PTAB finding on the patentability of any claims.

Regarding estoppel, since no institution decision has been rendered, the estoppel provisions of § 315(e)(2) are not yet applicable. If the IPR is instituted, Uber Technologies, Inc. et al. (and their privies) would be estopped from asserting invalidity grounds raised or that reasonably could have been raised in district court or other PTAB proceedings after a final written decision. For other potential defendants, all prior art grounds remain available for challenge until a final written decision is issued in this or any future proceeding. The initiation of this IPR by a major industry player like Uber suggests a perceived relevance of the patent to their operations or a defensive move against potential assertion.

Recommended next steps

• Monitor IPR2026-00305: The critical next milestone for this proceeding is the institution decision, expected around September 12, 2026. This decision will indicate whether the PTAB will proceed to a full trial on the challenged claims. Access the public docket for IPR2026-00305 via the USPTO PTAB End-to-End system (https://developer.uspto.gov/ptab-api/case/IPR2026-00305) to track updates, including the filing of the Patent Owner's Preliminary Response and the eventual institution decision.
• Analyze Petition Details: Once publicly available, thoroughly review the petition for IPR2026-00305 to understand the specific claims being challenged, the prior art asserted, and the legal arguments made by Uber Technologies, Inc. et al. This will provide insight into the potential weaknesses of the patent's claims.
• Assess Claims: For any claims of US7840427 that are cited in a demand letter or assertion, perform an independent validity assessment, especially considering the grounds raised in IPR2026-00305, even if the proceeding is still pending. This proactive analysis will inform defensive strategies regardless of the PTAB outcome.
• Consider Intervention: If you are facing an assertion of US7840427 and believe your interests align with Uber Technologies, Inc. et al., consider options for intervention or filing your own IPR.## Proceedings overview
  There is one active AIA trial proceeding on US patent 7840427, which is currently pending. This means no claims have been invalidated or sustained by the PTAB yet. For a defendant, this indicates the patent claims remain untested in post-grant proceedings, and the patent's validity has not yet been challenged to a final decision.

IPR2026-00305 — Uber Technologies, Inc. et al. v. Carma Technology Ltd.

• Type: Inter Partes Review
• Filed: 2026-03-12
• Status: Pending – The proceeding is in its early stages, and no institution decision has been issued by the PTAB as of the current date.
• Judge panel: Information regarding the specific judge panel for this pending IPR is not yet publicly available.
• Petition grounds: The specific claims challenged, prior art references, and statutory bases (§ 102 / § 103 / § 112) for the petition are not yet publicly detailed in the provided information or readily available from general public PTAB search results at this early stage.
• Institution decision: Not yet issued. The statutory deadline for an institution decision is typically six months from the petition's filing date, which would be around September 12, 2026, for this proceeding.
• Final Written Decision: Not applicable; the proceeding is pending and has not yet reached a Final Written Decision.
• Settlement / termination: Not applicable; the proceeding is pending.
• Appeal: Not applicable; the proceeding is pending and no final decision has been issued that could be appealed.
• Defensive value: This active IPR signifies that the validity of at least some claims of US7840427 is being challenged by Uber Technologies, Inc. et al. However, since it is in the early "pending" stage, no claims have been invalidated or confirmed. Potential defendants should monitor this IPR closely, as an institution decision (expected around September 2026) will clarify which claims, if any, the PTAB believes have a reasonable likelihood of being found unpatentable.

Strategic summary

Currently, all claims of US7840427 remain untested by a final PTAB decision. IPR2026-00305, initiated by Uber Technologies, Inc. et al., is in its preliminary stages, with the institution decision pending. This means there is no current PTAB finding on the patentability of any claims.

Regarding estoppel, since no institution decision has been rendered, the estoppel provisions of § 315(e)(2) are not yet applicable. If the IPR is instituted, Uber Technologies, Inc. et al. (and their privies) would be estopped from asserting invalidity grounds raised or that reasonably could have been raised in district court or other PTAB proceedings after a final written decision. For other potential defendants, all prior art grounds remain available for challenge until a final written decision is issued in this or any future proceeding. The initiation of this IPR by a major industry player like Uber suggests a perceived relevance of the patent to their operations or a defensive move against potential assertion.

Recommended next steps

• Monitor IPR2026-00305: The critical next milestone for this proceeding is the institution decision, expected around September 12, 2026. This decision will indicate whether the PTAB will proceed to a full trial on the challenged claims. Access the public docket for IPR2026-00305 via the USPTO PTAB End-to-End system (https://portal.unifiedpatents.com/ptab/case/IPR2026-00305) to track updates, including the filing of the Patent Owner's Preliminary Response and the eventual institution decision.
• Analyze Petition Details: Once publicly available, thoroughly review the petition for IPR2026-00305 to understand the specific claims being challenged, the prior art asserted, and the legal arguments made by Uber Technologies, Inc. et al. This will provide insight into the potential weaknesses of the patent's claims.
• Assess Claims: For any claims of US7840427 that are cited in a demand letter or assertion, perform an independent validity assessment, especially considering the grounds raised in IPR2026-00305, even if the proceeding is still pending. This proactive analysis will inform defensive strategies regardless of the PTAB outcome.
• Consider Intervention: If you are facing an assertion of US7840427 and believe your interests align with Uber Technologies, Inc. et al., consider options for intervention or filing your own IPR.