Litigation

Amazon Web Services Inc. et al. v. Headwater Research LLC

Pending - Instituted

IPR2026-00106

Filed
2025-11-10

Patents at issue (1)

10321320PTAB challenge active

Summary

This Inter Partes Review (IPR) petition, filed by Amazon Web Services Inc. and Amazon Com Services LLC against Headwater Research LLC, has been instituted and is currently pending before the PTAB.

Case overview & background

Plain-language overview of the case: parties, accused product, patents at issue, and why the suit matters.

This Inter Partes Review (IPR) case, IPR2026-00106, involves Amazon Web Services Inc. and Amazon Com Services LLC as Petitioners challenging U.S. Patent No. 10,321,320, owned by Headwater Research LLC. Amazon Web Services (AWS) is a major subsidiary of Amazon providing cloud computing platforms and APIs, encompassing a wide array of services including networking, storage, and analytics. Amazon Com Services LLC is another key subsidiary responsible for Amazon's vast e-commerce, logistics, and fulfillment operations, supporting its customer-facing services and third-party marketplace. Headwater Research LLC is identified as a patent assertion entity (PAE) or non-practicing entity (NPE) that focuses on patents related to mobile device and wireless connectivity, particularly intelligent data policy management. The patent at issue, U.S. Patent No. 10,321,320, broadly covers aspects of mobile device communication and data management technologies, with the underlying infringement allegations against Amazon centering on its Amazon Device Messaging (ADM) system, which provides push notifications for Amazon's Fire tablets, Fire TV, Echo Show, and other branded devices. This system is considered core to Amazon's "network message server" and device provisioning technology for real-time messages.

The IPR is currently pending before the Patent Trial and Appeal Board (PTAB), having been instituted on April 28, 2026. This PTAB challenge stems from ongoing patent infringement litigation where Headwater Research LLC accused Amazon Web Services, Inc. and [Amazon.com Services LLC](/litigations/by-plaintiff/Amazon.com%20Services%20LLC) (among others) of infringement in the U.S. District Court for the Eastern District of Texas. Specifically, an infringement suit (Case No. 2:25-cv-00961), filed September 18, 2025, names Amazon entities, Walmart, Uber, and Target as defendants, and is presided over by District Judge Rodney Gilstrap and Magistrate Judge Roy S. Payne. The Eastern District of Texas is a commonly favored venue for patent plaintiffs due to its expeditious dockets. The IPR serves as a parallel administrative proceeding to challenge the patent's validity, often used by defendants in district court litigation.

This case is notable due to Headwater Research LLC's aggressive and successful patent assertion campaign, characterized by significant jury verdicts and settlements against major tech and telecom companies such as Samsung, Verizon, T-Mobile, AT&T, Apple, and Google. The assertion against Amazon's ADM system highlights Headwater's strategy of targeting core functionalities across a wide range of mobile and connected devices. The IPR also demonstrates a concerted defense effort, with other companies like Target Corporation having filed motions for joinder in IPRs challenging the same patent, indicating a coordinated industry response to Headwater's assertions. The outcome of these proceedings could have broader implications for push notification and mobile device communication technologies within the cloud and e-commerce sectors.

Key legal developments & outcome

Major rulings, motions, claim construction, settlements, and the present posture or final disposition.

Headwater Research LLC initiated patent infringement litigation against Amazon Web Services Inc. and Amazon Com Services LLC in the Western District of Texas, asserting U.S. Patent No. 10,321,320, among others. This litigation has seen several key developments, including a partial settlement, an unsuccessful motion to stay, and the institution of an Inter Partes Review (IPR) at the Patent Trial and Appeal Board (PTAB).

Key Legal Developments and Outcome:

1. Filing & Initial Pleadings:

  • 2025-06-20: Headwater Research LLC filed a patent infringement complaint against Amazon.com, Inc., Amazon.com Services LLC, and Amazon Web Services, Inc. in the U.S. District Court for the Western District of Texas (Case No. 7:25-cv-00286). The complaint alleged infringement related to Amazon's use of its Amazon Device Messaging (ADM) service for pushing notifications like deal alerts and Prime Video trailers.

2. Settlement and Parallel PTAB Proceedings:

  • 2025-11-10: A Notice of Partial Settlement was filed in the district court case 7:25-cv-00286. On the same day, Amazon Web Services Inc. and Amazon Com Services LLC filed an Inter Partes Review (IPR) petition (IPR2026-00106) challenging the validity of U.S. Patent No. 10,321,320, which is at issue in the district court litigation. [cite: prompt, 8]
  • 2025-11-25: Target Corporation also filed an IPR (IPR2026-00153) against Headwater Research LLC, challenging U.S. Patent No. 10,321,320. This IPR was later not instituted.

3. Pre-trial Motions of Substance:

  • 2025-12-23: Amazon filed a motion to stay the district court litigation (7:25-cv-00286) pending the outcome of the IPR proceedings.
  • 2026-01-13: Amazon filed a reply in support of its motion to stay. The outcome of this motion to stay is not explicitly detailed in the provided search results but can be inferred from subsequent events.

4. Claim Construction (Markman) Outcomes:

  • 2026-03-16: A Joint Claim Construction Brief or Statement was filed by Headwater Research LLC in the district court case.
  • 2026-03-17: An Order Cancelling Markman Hearing was entered by Judge Alan D. Albright. This cancellation likely occurred in light of the partial settlement or the pending IPRs.

5. Parallel PTAB IPR Institution:

  • 2026-04-28: The Patent Trial and Appeal Board (PTAB) instituted IPR2026-00106, filed by Amazon Web Services Inc. and Amazon Com Services LLC, to review U.S. Patent No. 10,321,320. [cite: prompt, 8] The IPR is currently pending. [cite: prompt, 8]

6. Present Posture:

  • The district court case (7:25-cv-00286) is ongoing, with a partial settlement having been reached. The cancellation of the Markman hearing suggests a pause or shift in the litigation's trajectory, possibly awaiting the IPR outcome or due to the partial settlement. The IPR challenging the asserted patent is currently instituted and pending before the PTAB. [cite: prompt, 8]

In the news

What the press has reported about this case, summarized with links to the source articles.

I'll search for press coverage across several angles.

Let me dig into specific press articles.

Press coverage of Headwater Research v. Amazon

The filing wave (Aug 2025) and the $279M/$175M backdrop. The Amazon campaign entered the trade press in late August 2025 as part of a broader filing spree. Law360 reported on 2025-08-28 (Elliot Weld) that Headwater "has fired off a salvo of patent infringement suits in two Texas federal courts against technology giants Apple Inc., Amazon and Google, as well as wireless services and cable providers Comcast, Charter Communications Inc. and Dish Network, after winning $279 million against Samsung at trial over similar claims and $175 million from Verizon in a case that later settled" — the same summary Law360 uses on its case page for Headwater Research LLC v. Dish Network Corp.. Coverage specifically tied to the '320 patent is thinner and comes from docket-analysis/trade commentary rather than daily press: a Mondaq article dated 2025-08-11 was the first to describe the 2025-06-20 W.D. Tex. complaint (7:25-cv-00286) accusing Amazon of the '192 and '320 patents, quoting Headwater's allegation that "ADM provides the only push channel for Fire tablets, Fire TV, Echo Show, and other Amazon-branded devices," and noting that Headwater had asserted the same two patents against Google in May 2025 — framing Amazon as a follow-on target rather than a stand-alone case. The IAM blog likewise ran a 2025-07-22 profile, "Five things to know about R&D and patent licensing firm Headwater Research," describing the "Texas-based technology development company" as being in trial against Verizon with "pending suits against Amazon, Google and Apple," and later ran a piece on Headwater's $175 million Q3 2025 verdict as the quarter's largest. Notably, the press consistently treats the PTAB risk as the real story: Law360 reported on 2025-07-24 (Adam Lidgett) that the PTAB had already invalidated claims in one of the two patents behind the Samsung verdict as obvious — the backdrop against which Amazon's Amazon-side IPRs were filed months later.

The stay fight and the Federal Circuit's refusal to pause the Texas case. The most heavily reported development involving Amazon was not the '320 IPR but Amazon's attempt to stop the district court litigation. Law360 reported on 2026-01-07 (Adam Lidgett) that "Texas-based Headwater Research LLC urged a Texas federal court not to pause its suit accusing Amazon of infringing a pair of server and wireless connection patents while the e-commerce giant challenges the patents at the Patent Trial and Appeal Board" — i.e., Headwater's opposition to Amazon's December 2025 stay motion, a motion Amazon premised on the fact that it had petitioned for review of "all claims of the only two patents asserted" in the W.D. Tex. case. Law360 subsequently reported (2026-06-17) that Amazon had asked the Federal Circuit to force the Texas court to pause the case while the Google case proceeded, and then reported (2026-08-03) that the "Federal Circuit on Monday said it wouldn't force a Texas federal court to pause a suit accusing Amazon of infringing a pair of Headwater Research LLC patents while a similar suit against Google plays out" (syndicated Law360 feed). IPWatchdog covered the same ruling (Eileen McDermott, "Amazon Loses CAFC Mandamus Bid for Stay Due to 'Customer Suit Exception'"), and Patent Case Watch summarized the nonprecedential order (CAFC 2026-146), highlighting the panel's reliance on the fact that "the plaintiff's allegations involve two asserted patents, one of which is not asserted in the competing Google case," and that Amazon's alternative severance request appeared

Sources

Plaintiff representatives

Counsel of record for the plaintiff(s): attorneys, firms, and roles (lead counsel, of counsel, local counsel).

The plaintiffs, Amazon Web Services Inc. and Amazon Com Services LLC, are represented by attorneys from Morgan, Lewis & Bockius LLP in IPR2026-00106. This representation is consistent with their counsel in other recent Inter Partes Review (IPR) proceedings involving Amazon entities.

The counsel of record for the plaintiff(s) includes:

  • Colin B. Heideman

    • Role: Lead Counsel
    • Firm: Morgan, Lewis & Bockius LLP, Seattle, WA
    • Note on experience: Heideman is a patent litigator who defends technology and medical device companies, with extensive experience in US district courts, the Federal Circuit, and before the PTAB, where he has served as lead counsel in dozens of IPR proceedings. He has represented Amazon in various high-stakes patent disputes, including IPR proceedings where patents were invalidated. Prior to joining Morgan Lewis in September 2025, he was a partner at Knobbe Martens.

  • Jeremy A. Anapol

    • Role: Back-up Counsel
    • Firm: Morgan, Lewis & Bockius LLP, Orange County (Costa Mesa), CA
    • Note on experience: Anapol is a patent litigator with a background as a software engineer, handling disputes involving computer technologies such as authentication, media streaming, and speech recognition. He has prevailed in numerous IPR proceedings and obtained non-infringement and invalidity judgments for defendants. He joined Morgan Lewis from Knobbe Martens in September 2025.

  • Nathan D. Reeves

    • Role: Back-up Counsel
    • Firm: Morgan, Lewis & Bockius LLP, Seattle, WA
    • Note on experience: Reeves is an intellectual property litigator whose practice focuses on patent matters before federal district courts, the Patent Trial and Appeal Board, and the Federal Circuit. He has experience challenging and defending patents in IPR proceedings and advises clients in technology, consumer products, and medical devices industries. He joined Morgan Lewis from Knobbe Martens in September 2025.

  • Christie R.W. Matthaei

    • Role: Back-up Counsel (based on similar appointments in related Amazon IPRs)
    • Firm: Morgan, Lewis & Bockius LLP, Seattle, WA
    • Note on experience: Matthaei represents a wide variety of clients in all aspects of IP disputes, including pre-litigation matters such as analyzing patent infringement and validity. She also joined Morgan Lewis from Knobbe Martens in September 2025.

These attorneys were specifically listed as counsel for Amazon entities in other IPR proceedings (e.g., IPR2025-00757 et al.) that involved Amazon Web Services, Inc., and Amazon.com Services LLC, indicating their current role as counsel for these petitioners in PTAB matters.

Defendant representatives

Counsel of record for the defendant(s): attorneys, firms, and roles (lead counsel, of counsel, local counsel).

Headwater Research LLC, the defendant (Patent Owner) in IPR2026-00106, is represented by attorneys from Russ August & Kabat.

The counsel of record for Headwater Research LLC includes:

  • Reza Mirzaie (Lead Counsel)
    • Firm: Russ August & Kabat, Los Angeles, CA (12424 Wilshire Blvd., 12th Floor, Los Angeles, CA 90025)
    • Experience: Mirzaie is a member of the Russ August & Kabat patent trial team that secured a $175 million jury verdict for Headwater Research LLC against Verizon Communications in July 2025. He is also listed as lead counsel for Headwater in other IPR proceedings.

Other attorneys from Russ August & Kabat who have represented Headwater Research LLC in related PTAB proceedings and patent litigation include:

  • Marc A. Fenster (Counsel)
    • Firm: Russ August & Kabat, Los Angeles, CA (12424 Wilshire Blvd., 12th Floor, Los Angeles, CA 90025)
    • Experience: Fenster was part of the Russ August & Kabat team that won a $175 million jury verdict for Headwater Research LLC against Verizon Communications.
  • Dale Chang (Counsel)
    • Firm: Russ August & Kabat, Los Angeles, CA (12424 Wilshire Blvd., 12th Floor, Los Angeles, CA 90025)
    • Experience: Chang was part of the Russ August & Kabat team that secured the $175 million jury verdict for Headwater Research LLC against Verizon Communications.
  • James A. Milkey (Counsel)
    • Firm: Russ August & Kabat, Los Angeles, CA (12424 Wilshire Blvd., 12th Floor, Los Angeles, CA 90025)
    • Experience: Milkey is listed as an attorney for Headwater Research LLC in other PTAB cases.
  • Neil Rubin (Counsel)
    • Firm: Russ August & Kabat, Los Angeles, CA (12424 Wilshire Blvd., 12th Floor, Los Angeles, CA 90025)
    • Experience: Rubin is listed as an attorney for Headwater Research LLC in other PTAB cases.
  • Philip X. Wang (Counsel)
    • Firm: Russ August & Kabat, Los Angeles, CA (12424 Wilshire Blvd., 12th Floor, Los Angeles, CA 90025)
    • Experience: Wang was part of the Russ August & Kabat team that secured the $175 million jury verdict for Headwater Research LLC against Verizon Communications. He is also listed as an attorney for Headwater Research LLC in other PTAB cases.

Headwater Research LLC has authorized electronic service via email at rak_headwater@raklaw.com.