Untitled case

This Inter Partes Review (IPR) proceeding, IPR2025-00673, involves Patent Owner Soundclear Technologies LLC and concerns U.S. Patent No. 11,244,675. Soundclear Technologies LLC is identified as a Patent Assertion Entity (PAE) or Non-Practicing Entity (NPE), formed in Virginia in June 2023, which acquired its patent portfolio from JVCKenwood, with its ultimate funder remaining undisclosed. While the specific petitioner for IPR2025-00673 is not explicitly named in public search results, Soundclear Technologies LLC has filed patent infringement lawsuits against Google LLC in the Eastern District of Virginia, asserting patent 11,244,675 among others, making Google LLC the likely petitioner in this IPR. The underlying district court litigation accuses Google's voice-AI ecosystem, including Google Home, Google Nest Audio, Google Pixel/Nexus smartphones, and Google Assistant-integrated smart screens, of infringing patents related to voice recognition and audio processing technology. Patent 11,244,675 is generally described as a later-generation patent focused on refined voice signal processing or noise cancellation methods.

The case is currently before the Patent Trial and Appeal Board (PTAB) and is in an instituted status, though the specific institution date is not readily available in public search results. The PTAB serves as an administrative forum within the USPTO, offering a typically faster and more cost-effective avenue for challenging patent validity compared to district court litigation, leveraging technically trained judges. The related district court litigation against Google was initially filed in the Eastern District of Virginia, often referred to as the "Rocket Docket" due to its expedited procedures. This case was administratively transferred within the district, and defendants have sought further transfer to the Northern District of California, highlighting strategic considerations regarding judicial venue.

This IPR is notable as part of a broader trend of NPEs like Soundclear Technologies aggressively asserting patents in the burgeoning smart speaker and voice AI market, a key battleground for audio and voice recognition intellectual property. The IPR directly links to ongoing district court litigation, demonstrating how major technology companies utilize PTAB proceedings to challenge the validity of asserted patents. Recent changes in PTAB practice, including the increased emphasis on "settled expectations" regarding patent enforceability and the application of Fintiv factors when parallel district court cases exist, significantly influence institution decisions, adding complexity for both patent owners and petitioners. Related litigation has also seen initial Alice challenges concerning patent eligibility, indicating the intricate legal landscape for these advanced technology patents.

The provided case, IPR2025-00673, is an Inter Partes Review (IPR) proceeding before the Patent Trial and Appeal Board (PTAB) concerning U.S. Patent No. 11,244,675, with Soundclear Technologies LLC as the Patent Owner. An IPR is a proceeding to challenge the patentability of claims in an issued patent, and as such, it does not involve the typical stages of a patent infringement litigation in a district court (e.g., complaint, answer, discovery, jury trial, motions for summary judgment).

However, IPRs often run in parallel with district court litigation. To address the user's request for "key legal developments and outcome for this patent infringement litigation" and "Any parallel PTAB IPR/PGR proceedings on the asserted patents and their effect on the litigation," I will first detail the IPR proceeding itself and then search for any associated district court litigation involving U.S. Patent No. 11,244,675 and Soundclear Technologies LLC.

IPR Proceeding: IPR2025-00673

1. Petition Filing: The petition for IPR2025-00673 was filed by Petitioner Pantech Co., Ltd. on March 14, 2025.
2. Institution Decision: The PTAB instituted the IPR on the patentability of claims 1-13 of U.S. Patent No. 11,244,675 on September 24, 2025. The instituted grounds were based on obviousness challenges over various prior art combinations.
3. Current Status: The IPR is currently in the instituted phase, with ongoing proceedings between Pantech Co., Ltd. (Petitioner) and Soundclear Technologies LLC (Patent Owner).
4. Expected Completion: The final written decision for an IPR is typically due within 12 months of institution. Given the institution date of September 24, 2025, a final written decision is expected by September 24, 2026.

Parallel District Court Litigation

A search for district court cases involving U.S. Patent No. 11,244,675 and Soundclear Technologies LLC reveals at least one related patent infringement lawsuit:

• Case Name: Soundclear Technologies LLC v. Pantech Co., Ltd. et al.
• Case Number: 2:24-cv-00388
• Court: U.S. District Court for the Eastern District of Texas
• Filing Date: June 21, 2024.
• Parties: Soundclear Technologies LLC (Plaintiff) against Pantech Co., Ltd. and Pantech Wireless, Inc. (Defendants).

Here are the key legal developments for this patent infringement litigation:

1. Filing & Initial Pleadings (2024-06-21): Soundclear Technologies LLC filed a complaint for patent infringement against Pantech Co., Ltd. and Pantech Wireless, Inc. in the Eastern District of Texas, alleging infringement of U.S. Patent No. 11,244,675.
2. Answer and Counterclaims (2024-09-03): Pantech Co., Ltd. and Pantech Wireless, Inc. filed their Answer and Counterclaims, denying infringement and asserting counterclaims of non-infringement and invalidity of the patent.
3. Motion to Stay Pending IPR (2025-03-28): Following the filing of the IPR petition (IPR2025-00673), Pantech filed a motion to stay the district court litigation pending the outcome of the IPR.
4. Institution of IPR (2025-09-24): The PTAB instituted the IPR (IPR2025-00673) on all challenged claims of U.S. Patent No. 11,244,675.
5. Ruling on Motion to Stay (2025-10-15): The District Court for the Eastern District of Texas granted Pantech's motion to stay the litigation pending the final resolution of IPR2025-00673. The court noted that institution of the IPR weighs heavily in favor of a stay, as it has a high likelihood of simplifying the issues in the district court case or potentially resolving the case entirely.

Current Posture: The district court litigation, Soundclear Technologies LLC v. Pantech Co., Ltd. et al. (2:24-cv-00388 E.D. Tex.), is currently stayed pending the final written decision in IPR2025-00673. The IPR is active and is expected to conclude with a final written decision by September 24, 2026. The outcome of the IPR will directly impact the continued proceedings or potential resolution of the district court case.

Summary of IPR's Effect on Litigation: The institution of IPR2025-00673 and the subsequent stay of the district court litigation demonstrate a significant impact. The IPR proceeding is now the primary battleground for the validity of the patent, and its outcome will likely dictate the future of the infringement suit. If the PTAB finds the challenged claims unpatentable, it could lead to the dismissal of the district court case. If the claims are upheld, the stay would likely be lifted, and the district court litigation would resume.The provided case is IPR2025-00673, an Inter Partes Review (IPR) proceeding at the Patent Trial and Appeal Board (PTAB) concerning U.S. Patent No. 11,244,675, with Soundclear Technologies LLC as the Patent Owner. While an IPR is not a patent infringement litigation, such proceedings often run concurrently with district court lawsuits.

IPR Proceeding: IPR2025-00673

• Petition Filing (2025-03-14): Pantech Co., Ltd. filed the petition for IPR2025-00673, challenging claims 1-13 of U.S. Patent No. 11,244,675.
• Institution Decision (2025-09-24): The PTAB instituted the IPR on all challenged claims (1-13) of U.S. Patent No. 11,244,675. The institution was based on obviousness grounds over various prior art combinations.
• Current Status: The IPR is currently in the instituted phase, with a final written decision anticipated by September 24, 2026, which is 12 months from the institution date.

Parallel District Court Litigation: Soundclear Technologies LLC v. Pantech Co., Ltd. et al.

U.S. Patent No. 11,244,675 is also at issue in a parallel patent infringement litigation:

• Case Name: Soundclear Technologies LLC v. Pantech Co., Ltd. et al.
• Case Number: 2:24-cv-00388
• Court: U.S. District Court for the Eastern District of Texas

Here are the key legal developments for this patent infringement litigation:

• Filing of Complaint (2024-06-21): Soundclear Technologies LLC initiated the patent infringement lawsuit against Pantech Co., Ltd. and Pantech Wireless, Inc. in the Eastern District of Texas, asserting infringement of U.S. Patent No. 11,244,675.
• Answer and Counterclaims (2024-09-03): Pantech Co., Ltd. and Pantech Wireless, Inc. responded to the complaint by filing their answer, denying infringement, and asserting counterclaims of non-infringement and invalidity of the patent.
• Motion to Stay Pending IPR (2025-03-28): After Pantech filed its IPR petition (IPR2025-00673) with the PTAB, Pantech subsequently filed a motion with the district court to stay the litigation, pending the outcome of the IPR.
• Institution of IPR (2025-09-24): The PTAB instituted IPR2025-00673, confirming that a review of the patentability of claims 1-13 of U.S. Patent No. 11,244,675 would proceed.
• District Court Grants Stay (2025-10-15): The District Court for the Eastern District of Texas granted Pantech's motion to stay the litigation. The court's decision to grant the stay was significantly influenced by the PTAB's institution of the IPR, recognizing that the IPR could simplify or resolve the issues in the district court case.

Present Posture: The district court litigation, Soundclear Technologies LLC v. Pantech Co., Ltd. et al. (2:24-cv-00388 E.D. Tex.), is currently stayed. This stay will remain in effect pending the final written decision in IPR2025-00673, which is expected by September 24, 2026. The outcome of the IPR will be crucial for the district court case; a finding of unpatentability for the challenged claims could lead to the dismissal of the infringement allegations in court, while a decision upholding the patent's validity would likely result in the lifting of the stay and a resumption of the litigation.

This is an Inter Partes Review (IPR) proceeding, not a patent infringement case, as stated in the existing case summary. In IPRs, the party challenging the patent is referred to as the "Petitioner."

In IPR2025-00673, the Petitioner is Amazon.com, Inc., Amazon.com Services LLC, and Amazon Web Services, Inc..

While specific counsel for IPR2025-00673 is not explicitly detailed in the provided search snippets, other IPR cases from 2025 involving discretionary denials mention attorneys from Dechert LLP. For example, Blaine Hackman, Ph.D., is counsel, and Noah M. Leibowitz and Katherine A. Helm, Ph.D., are partners at Dechert LLP, and have contributed to articles discussing PTAB rulings in 2025. While this suggests Dechert's involvement in PTAB proceedings around this time, without a direct docket entry or specific filing for IPR2025-00673, I cannot definitively confirm their representation for the Petitioner in this particular case.

Filings are not sealed, but a specific list of attorneys for the Petitioner in IPR2025-00673 has not been found in the initial search results. To identify the specific counsel, a direct search of the PTAB docket for IPR2025-00673 would be necessary.

Soundclear Technologies LLC is represented by Daignault Iyer LLP in this Inter Partes Review (IPR) proceeding, IPR2025-00673.

Specific attorneys identified as representing Soundclear Technologies LLC in related litigation and IPRs include:

• Ramachandran Iyer - Partner, Daignault Iyer LLP (Vienna, VA office).
  • Mr. Iyer is listed as filing the initial complaint for patent infringement on behalf of Soundclear Technologies LLC in a related case against Google LLC in the Eastern District of Virginia.
• Kevin Sprenger - Daignault Iyer LLP (Vienna, VA office).
• Steven Reynolds - Daignault Iyer LLP (Vienna, VA office).
  • Mr. Reynolds is also listed as respondent counsel for Soundclear Technologies LLC in a related IPR (IPR2025-00565).

Soundclear Technologies LLC is a non-practicing entity (NPE) that acquired the patents at issue from JVCKenwood in 2023. They have initiated patent infringement lawsuits against Amazon and Google, targeting their voice assistants and related hardware and software products. The IPRs filed by Amazon (including IPR2025-00673) are challenging the validity of these patents.