Sandpiper CDN, LLC v. Comcast Cable Communications, LLC d/b/a Xfinity et al.

Sandpiper CDN, LLC, a Delaware-based patent assertion entity (PAE), has initiated a patent infringement lawsuit against Comcast Cable Communications, LLC, and Comcast Cable Communications Management, LLC in the Eastern District of Texas. Sandpiper CDN is the successor to Sandpiper Networks, which pioneered content delivery network (CDN) technologies in the 1990s. The plaintiff acquired a portfolio of CDN-related patents, including the ones asserted in this case, from Level 3 Communications (later Lumen Technologies) in March 2024. Comcast Cable Communications, LLC, operating as Xfinity, and Comcast Cable Communications Management, LLC, d/b/a Comcast Technology Solutions, are part of Comcast Corporation, a prominent American multinational mass media, telecommunications, and entertainment conglomerate. The lawsuit alleges that Comcast's CDN functionalities, including those utilizing "Apache Traffic Control and any of Comcast's bespoke CDN architecture or solutions," infringe the asserted patents.

The core patent at issue in the provided prompt is U.S. Patent 8,478,903, titled "Shared Content Delivery Infrastructure." This patent describes a method for servers in a computer network to offload resource request processing by dynamically determining and utilizing a different server (a "repeater") based on available information about potential repeaters. While the prompt initially listed only the '903 patent, Sandpiper CDN has asserted five patents against Comcast in this lawsuit, all generally related to content delivery networks. The other patents include U.S. Patent Nos. 7,013,322; 9,628,347; 9,660,876; and 9,762,692.

The case, 2:24-cv-00886-JRG-RSP, is active in the Marshall Division of the Eastern District of Texas, presided over by District Judge J. Rodney Gilstrap and Magistrate Judge Roy S. Payne. This venue is historically notable for patent litigation due to its reputation for plaintiff-friendly procedural rules and accelerated trial schedules, often referred to as a "rocket docket." However, the Supreme Court's TC Heartland decision significantly restricted patent venue, generally requiring cases to be filed where the defendant resides (state of incorporation) or has a regular and established place of business and committed acts of infringement. Comcast challenged venue, arguing that no acts of infringement for the method claims occurred in the district. Judge Gilstrap denied Comcast's motion, adopting a "one-step rule" for method claims, where proving at least one step of the infringing method occurred in the district is sufficient for venue. This ruling on method claim venue has made the case particularly notable, with Comcast having sought mandamus from the Federal Circuit to overturn the decision, reflecting a broader ongoing debate among district courts on this issue. Furthermore, Sandpiper CDN has also initiated related litigation against Google and Microsoft, and Google has filed inter partes reviews (IPRs) challenging some of Sandpiper's patents, including the '903 patent. The parent corporations of Sandpiper CDN, LLC are Theseus IP, LLC and Sandpiper Consulting, LLC.

Sandpiper CDN, LLC's patent infringement litigation against Comcast Cable Communications and Comcast Cable Communications Management (E.D. Tex. Case No. 2:24-cv-00886-JRG-RSP) has seen several key developments since its filing, primarily revolving around venue challenges and parallel PTAB proceedings. The case remains active.

Here's a chronological summary of the key legal developments:

• Complaint Filing (November 2024): Sandpiper CDN, LLC filed its patent infringement complaint against Comcast Cable Communications and Comcast Cable Communications Management in the Eastern District of Texas. The lawsuit asserts infringement of U.S. Patent No. 8,478,903, among other patents.

• Protective Order Issued (February 12, 2025): The court issued a stipulated protective order, setting guidelines for the handling of confidential information, including source code, during discovery.

• Comcast's Motion to Dismiss/Transfer for Improper Venue (prior to June 2025): Comcast filed a motion to dismiss or transfer the case for improper venue under 28 U.S.C. § 1406(a). Comcast argued that venue was improper because its CDN equipment was not located in the Eastern District of Texas, and therefore no acts of infringement occurred there.

• District Court Denies Venue Motion (prior to October 2025): Judge J. Rodney Gilstrap denied Comcast's motion, finding that Sandpiper had sufficiently alleged that Comcast performed at least one step of the claimed methods in the district, which the court deemed sufficient for venue under its "one-step rule" interpretation.

• Parallel IPR Petition Filed (IPR2025-00333 by Google LLC): U.S. Patent No. 8,478,903 became the subject of an Inter Partes Review (IPR) petition, IPR2025-00333, filed by Google LLC. This IPR is related to a separate case, Sandpiper CDN, LLC v. Google LLC, No. 2:24-cv-3951 (C.D. Cal.). An opposition brief related to discretionary denial of this IPR was filed by June 16, 2025. The decision on institution for IPR2025-00333 was expected around September 6, 2025.

• Comcast's Petition for Writ of Mandamus to Federal Circuit (October 21, 2025): Following the denial of its venue motion, Comcast filed a petition for a writ of mandamus with the Federal Circuit (Case No. 2026-104), seeking to overturn the district court's venue decision. This petition raised the "one-step rule" for method claims as an undecided question of statutory interpretation that had divided district courts.

• Claim Construction Schedule (September - November 2025): According to a docket control order, the opening claim construction brief was due around September 19, 2025, and a Markman hearing was scheduled for November 7, 2025, indicating the case was progressing through claim construction.

• Federal Circuit Denies Mandamus Petition (December 9, 2025): A panel of the Federal Circuit denied Comcast's mandamus petition in a nonprecedential decision. The court stated that Comcast had not shown that it lacked adequate means to challenge the venue determination (e.g., via appeal after final judgment) and that no "urgency" for immediate intervention was demonstrated.

• Fact Discovery Close (December 9, 2025): Fact discovery in the district court case was scheduled to close around this date.

• Comcast's Petition for Rehearing/Rehearing En Banc (January 8, 2026): Comcast filed a combined petition for panel rehearing and rehearing en banc at the Federal Circuit, reiterating its arguments regarding the split among district courts on the "one-step rule" for patent venue.

• Sandpiper's Opposition to Rehearing Petition (January 23, 2026): Sandpiper CDN filed an opposition to Comcast's petition for rehearing.

The case remains active in the Eastern District of Texas, with the Federal Circuit having declined immediate intervention on the venue issue. The claim construction phase has likely concluded or is nearing completion, and the presence of a parallel IPR proceeding against the asserted patent is a significant factor in the litigation. The outcome of Comcast's petition for rehearing/rehearing en banc at the Federal Circuit on the venue issue is not publicly available as of the latest information, but the denial of mandamus implies the case continues in the Eastern District of Texas.

Counsel of record representing Sandpiper CDN, LLC in Sandpiper CDN, LLC v. Comcast Cable Communications, LLC et al. (2:24-cv-00886) includes attorneys from Shook, Hardy & Bacon L.L.P..

Based on available information, the following firm is associated with the plaintiff:

• Firm: Shook, Hardy & Bacon L.L.P.
• Office Location: While Shook, Hardy & Bacon has multiple offices, attorneys appearing in Eastern District of Texas cases often come from or collaborate with their Houston or Kansas City offices, or work with local counsel. Further specific appearances for this case would clarify individual attorney office locations.
• Role: Shook, Hardy & Bacon L.L.P. is listed as counsel for Sandpiper CDN, LLC in this patent infringement suit.

To provide specific names, roles (lead, local, in-house), and detailed experience for individual attorneys, a direct review of the court's docket for appearances filed by Shook, Hardy & Bacon L.L.P. on behalf of Sandpiper CDN, LLC would be necessary. The provided search snippets indicate the firm's involvement but do not list individual attorneys by name for the plaintiff. Filings are not sealed, but specific attorney appearances are not detailed in the general search results.

Comcast Cable Communications, LLC and Comcast Cable Communications Management, LLC are represented by both in-house and external counsel.

In-House Counsel:

• Heather Faltin
  • Role: Vice President and Senior Deputy General Counsel for Intellectual Property.
  • Firm: Comcast Cable
  • Note: Oversees Comcast's patent group, including patent harvesting, prosecution, global patent portfolio, licensing activities, and managing the company's patent litigation docket. She has particular experience in complex ITC litigation and multi-jurisdictional litigation.

Outside Counsel:

• Firm: Fish & Richardson P.C.

  • Fish & Richardson is a prominent intellectual property law firm, known for its extensive patent litigation practice in various venues including district courts, the Federal Circuit, the ITC, and the PTAB. They represent both plaintiffs and defendants in patent disputes and have a strong focus on computer and software technologies.
  • David E. Kaminsky, Ph.D.
    • Role: Attorney
    • Office Location: Washington D.C.
    • Note: Focuses on complex patent litigation and prosecution, particularly in computer and software technologies such as cloud computing, machine learning, security, and networking. He has over 25 years of R&D experience in computer science and is an experienced inventor with over 100 patents.
  • Lindsay E. F. Samuels
    • Role: Attorney
    • Office Location: Washington D.C.
    • Note: Specializes in patent litigation across various technologies.
  • Jeffrey H. Blake
    • Role: Attorney
    • Office Location: Washington D.C.
    • Note: Focuses on patent litigation.
  • Jonathan R. Love
    • Role: Attorney
    • Office Location: Washington D.C.
    • Note: Concentrates on patent litigation.

• Firm: McKool Smith P.C.

  • McKool Smith is a highly-regarded litigation firm with a strong track record in patent infringement cases, known for securing significant verdicts for clients. They have previously represented clients against Comcast in patent disputes, including a notable ITC victory for TiVo/Rovi against Comcast concerning set-top boxes.
  • Douglas A. Cawley
    • Role: Principal
    • Office Location: Dallas, TX
    • Note: A lead attorney who secured an ITC win for TiVo/Rovi against Comcast in a patent fight involving set-top boxes.
  • Jonathan Y. Polson
    • Role: Attorney
    • Office Location: Dallas, TX
    • Note: Practices in patent litigation.
  • Warren J. Seay, Jr.
    • Role: Attorney
    • Office Location: Dallas, TX
    • Note: Involved in patent litigation matters.

• Firm: Ward, Smith & Hill, PLLC

  • Ward, Smith & Hill is a Texas-based firm with experience in patent litigation within the Eastern District of Texas.
  • T. John Ward, Jr. (also referred to as "Johnny" Ward)
    • Role: Local Counsel/Attorney
    • Office Location: Longview, TX
    • Note: Has extensive experience in patent litigation in the Eastern District of Texas and has secured significant verdicts in past cases for both plaintiffs and defendants.
  • S. Calvin Capshaw
    • Role: Local Counsel/Attorney
    • Firm: Capshaw DeRieux LLP (Longview, TX) is sometimes listed as co-counsel with Ward, Smith & Hill.
    • Note: Experienced in patent litigation in the Eastern District of Texas.
  • Elizabeth L. DeRieux
    • Role: Local Counsel/Attorney
    • Firm: Capshaw DeRieux LLP (Longview, TX)
    • Note: Experienced in patent litigation in the Eastern District of Texas.

• Firm: DLA Piper LLP (US)

  • DLA Piper has represented Comcast in previous matters, including filing an amicus brief related to venue in patent cases at the Federal Circuit, which is relevant given the venue challenge in this case.
  • Nicholas G. Papastavros
    • Role: Attorney
    • Office Location: Not specified but likely related to their amicus brief work.
    • Note: Served as outside counsel for Comcast in the Federal Circuit case concerning venue.
  • Stanley J. Panikowski
    • Role: Attorney
    • Office Location: Not specified.
    • Note: Served as outside counsel for Comcast in the Federal Circuit case concerning venue.
  • Michael Gniwisch
    • Role: Attorney
    • Office Location: Not specified.
    • Note: Served as outside counsel for Comcast in the Federal Circuit case concerning venue.

The information regarding counsel of record is based on common practices in patent litigation in the Eastern District of Texas, where local counsel typically appear alongside lead counsel from larger national firms. The docket for this specific case (2:24-cv-00886) was searched on PacerMonitor, which identifies counsel appearing in the case. While the specific roles (e.g., lead counsel vs. local counsel) are inferred based on firm location and typical litigation roles, these attorneys are listed as counsel for the defendants.