Untitled case

Case Overview and Background

This patent infringement litigation, Carma Technology, Corp., et al. v. Uber Technologies, Inc., Case No. 2:25-cv-00029, was filed in the Eastern District of Texas, Marshall Division, on January 14, 2025. The plaintiffs are Carma Technology, Corp. and Carma Technology, Ltd. (collectively, "Carma"), entities that have pioneered smartphone-based ridesharing, vehicle occupancy verification, and mobility-as-a-service technologies. Carma asserts that it developed early ridesharing applications and related software, and its sole named inventor, Sean O'Sullivan, is a recognized technologist and entrepreneur. The defendant is Uber Technologies, Inc. ("Uber"), a prominent operating company in the ridesharing and delivery services industry.

Carma accuses Uber's ridesharing and delivery services of infringing U.S. Patent No. 7,840,427, among others. Patent '427, titled "Shared transport system and service network," describes a system that matches spare transport capacity in vehicles with transportation demand from individuals or for goods. This is achieved through an electronic registry of available capacity and demand, combined with a central processing unit to facilitate matches. The allegedly infringing features in Uber's services include aspects related to driver matching, soliciting ratings, managing pickups along a route, and monitoring ride safety. Carma alleges that Uber has been aware of the asserted patents and its infringing conduct since at least 2016.

The case is being heard in the U.S. District Court for the Eastern District of Texas, Marshall Division, with Chief Judge Rodney Gilstrap assigned to preside and Magistrate Judge Roy S. Payne as the referred judge. This venue has historically been a significant hub for patent litigation, often referred to as a "rocket docket" due to its expedited case timelines and plaintiff-friendly reputation. The notability of this case stems from the assertion of foundational ridesharing patents against a major industry player like Uber. Uber has already initiated inter partes review (IPR) proceedings at the Patent Trial and Appeal Board (PTAB) for patent 7840427 and other patents involved in the litigation, a common defensive strategy in patent disputes.

I'll research the docket, filings, and parallel PTAB proceedings for this case.

Rich data emerging. Let me dig into the docket entries, Markman order, and PTAB institution decisions.

Key finding: venue dismissal and a discretionary-denial IPR. Let me verify these and find the Markman and summary judgment outcomes.

Key Legal Developments and Litigation Posture

Important threshold note on the case metadata. The case metadata supplied lists a single patent (US 7,840,427) and a single defendant (Uber Technologies, Inc.). The actual docket is materially broader: five asserted patents ('427, '071, '138, '668, '456) and three defendants as of the First Amended Complaint (Uber Technologies, Inc.; Uber Freight Holding Corp.; Uber Freight US LLC). The sections below follow the docket. Where I could not verify a fact against a primary source, I say so explicitly.

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1. Filing and Initial Pleadings

The complaint sought a permanent injunction, a "mandatory future royalty" on future Uber sales found to infringe, damages, fees, and costs (Westlaw, Uber infringes multiple rideshare software patents, complaint says, 2025 IPDBRF 0183, 2025-01-16).

Verification gap: I could not confirm the filing date or contents of Uber's answer and counterclaims (if any), or whether Uber pleaded invalidity/unenforceability counterclaims. This should be pulled from PACER entries following Dkt. 58.

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2. Pre-Trial Motions of Substance

(a) Motion to dismiss for improper venue and failure to state a claim (Dkt. 21).

• Magistrate R&R (Dkt. 305): Judge Payne recommended granting the motion in part — dismissing Uber Freight Holding Corporation and Uber Technologies, Inc. under 28 U.S.C. § 1406(a) for improper venue — and denying it otherwise (i.e., denying the Rule 12(b)(6) challenge).
• 2026-09-25 — Order (Dkt. 349) by Judge Gilstrap: After de novo review, overruled Carma's objections (Dkt. 340; response at Dkt. 345), adopted the R&R, granted the motion in part, and dismissed Uber Technologies, Inc. and Uber Freight Holding Corp. from the proceeding, with the motion "otherwise DENIED."
• Primary source: https://www.govinfo.gov/content/pkg/USCOURTS-txed-2_25-cv-00029/pdf/USCOURTS-txed-2_25-cv-00029-0.pdf
• Commentary: Michael C. Smith's E.D. Tex. Blog summarized the R&R under the heading "I'll Take 'Things That Are Not A Place of Business of the Defendant' for $500, Alex," noting that Uber Technologies and Uber Freight Holding challenged venue under § 1400(b) on the ground that neither had a regular and established place of business in the district, while Uber Freight US LLC did not challenge venue (edtexweblog.com).

This is the single most consequential ruling to date. It is a TC Heartland/In re Cray-style venue win for Uber Technologies — the entity associated with the rideshare platform — and it leaves Uber Freight US LLC as the sole remaining defendant in the Eastern District of Texas. Practically, the E.D. Tex. case now runs primarily against the freight-facing entity, while any rideshare-platform claims against Uber Technologies would have to be re-filed in a proper venue (presumptively the Northern District of California or the District of Delaware). That re-filing is my inference from the dismissal; I found no source confirming a new Carma suit has been filed.

Note the court chose dismissal rather than transfer under § 1406(a) — a discretionary call that imposes a re-filing cost and restarts the § 286 six-year damages lookback from the new filing date for the dismissed defendants.

(b) Motion to transfer. One secondary source (a French-language commentary, Dhenne Avocats, 2025-07-31) states that Uber asked the court to move the case from the Eastern District of Texas to the Northern District of California. I could not verify a separate § 1404(a) transfer motion on the docket and suspect that report conflates the § 1400(b) venue challenge in Dkt. 21 with a convenience transfer motion. Treat as unverified.

(c) Stay pending IPR. Verification gap: I found no evidence of a motion to stay pending the March 2026 IPR petitions. Given the November 2026 trial setting and the advanced posture at the time of institution decisions, any stay motion would likely have been denied in any event. This should be checked against the docket.

(d) Summary judgment / dispositive motions. Per the Docket Control Order quoted in Carma's Patent Owner Response, dispositive motions were filed 2026-07-27 and responses due 2026-08-10. Verification gap: I could not locate any opinion or order resolving summary judgment motions. Whether SJ was granted, denied, or deferred to trial is unresolved on the record available to me.

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3. Claim Construction (Markman)

• 2026-02-09 — Joint P.R. 4-3 Statement (Dkt. 95, with Exs. A & B at Dkts. 95-1, 95-2). The parties reported no agreed constructions on any term in any of the five patents. They agreed the Markman hearing would run four hours with no live witness testimony.
• Key disputed terms in the '427 patent (Carma's proposals per Exhibit A): "nodes"/"network of nodes"; "predetermined transport vehicle journey"/"predetermined journey of a transport vehicle" (Carma proposed plain and ordinary meaning); plus "shared transport system," "transport provider," and "pick-up location."
• 2026-06-09 — Markman hearing held before Judge Gilstrap (E.D. Tex. Marshall Division), per the Docket Control Order and Carma's POPR.

Verification gap: I was unable to locate the claim construction memorandum opinion and order or its outcome. This is a significant omission and should be retrieved from the docket (it would likely issue in the weeks following 2026-06-09 and bear on the surviving Uber Freight US LLC claims). Note the strategic stake identified in the complaint analysis: whether Uber's dynamic hexagonal H3 spatial indexing constitutes a "network of nodes" (the '427 specification illustrates fixed, named locations) is the pivotal scope question for the '427 patent.

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4. Discovery Milestones of Strategic Significance

From the agreed Docket Control Order (Dkt. 25), as recited in Carma's POPR:

The compressed ~24-month schedule is consistent with E.D. Tex. time-to-trial statistics (24.0 months for the period ending 2025-12-31, per Carma's Ex. 2003). Notably, fact and expert discovery were substantially complete before the PTAB's statutory institution-decision deadlines — a point Carma pressed hard in its discretionary-denial arguments.

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5. Parallel PTAB Proceedings — Five IPRs Filed 2026-03-12

On 2026-03-12 — eight days before the § 315(b) one-year bar date of 2026-03-20 — Uber Technologies, Inc. and Uber Fre

In the patent infringement case Carma Technology, Corp. et al. v. Uber Technologies Inc. et al. (Case No. 2:25-cv-00029) in the Eastern District of Texas, the following attorneys have been identified as representing the plaintiffs, Carma Technology, Corp. and Carma Technology, Ltd.:

Plaintiff Representatives

• Gareth Edward DeWalt

  • Role: Counsel
  • Firm: Bunsow De Mory LLP
  • Office Location: Contact info for Bunsow De Mory LLP provided by PacerMonitor.
  • Relevant Experience: The firm Bunsow De Mory LLP is listed as representing the plaintiff.

• Jennifer Leigh Truelove

  • Role: Counsel
  • Firm: McKool Smith, P.C. - Marshall
  • Office Location: Marshall, Texas
  • Relevant Experience: McKool Smith is a well-known firm in patent litigation, particularly in the Eastern District of Texas.

• Robin K. Curtis

  • Role: Counsel
  • Firm: Bunsow De Mory LLP
  • Office Location: Contact info for Bunsow De Mory LLP provided by PacerMonitor.
  • Relevant Experience: Part of the legal team from Bunsow De Mory LLP representing Carma Technology.

• Michael E. Flynn-O'Brien

  • Role: Counsel
  • Firm: Bunsow, De Mory Llp-Redwood
  • Office Location: Redwood. (Specific office location for Bunsow, De Mory LLP-Redwood not further detailed in snippets).
  • Relevant Experience: Counsel from Bunsow De Mory LLP.

• Samuel Franklin Baxter

  • Role: Counsel
  • Firm: McKool Smith, P.C. - Marshall
  • Office Location: Marshall, Texas
  • Relevant Experience: Samuel Franklin Baxter is a prominent patent litigator associated with McKool Smith, a firm highly active in patent cases in the Eastern District of Texas.

It is important to note that while Sean O'Sullivan is identified as the sole named inventor of the asserted patents and a notable technologist and entrepreneur, search results indicate that a "Sean O'Sullivan - Attorney at Law" in Greenfield, MA, and "Sean P. O'Sullivan, Esq" of the Law Office of Sean P. O'Sullivan, PLLC in Staten Island, NY, primarily focus on family, real estate, and general practice law, and there is no indication that he is representing the plaintiffs in this patent case.

The filing on January 14, 2025, lists these attorneys as appearing for the plaintiffs.

Here is the counsel of record representing the defendant(s), Uber Technologies Inc., in case 2:25-cv-00029:

• Andrew William Robb

  • Role: Partner
  • Firm: Gibson, Dunn & Crutcher LLP, Palo Alto, CA
  • Experience: Focuses on patent and other technology-based disputes, with experience in the International Trade Commission and federal district court. He has represented a ride-sharing company in multiple patent cases involving location, network infrastructure, and transportation-related technologies.

• Robert A. Vincent

  • Role: Partner
  • Firm: Gibson, Dunn & Crutcher LLP, Dallas, TX
  • Experience: His practice primarily centers on intellectual property litigation across a variety of technologies, including smartphones, user interfaces, semiconductors, and software. He has litigated complex patent infringement cases in numerous jurisdictions, including the Eastern and Northern Districts of Texas.

• Nathan Robert Curtis

  • Role: Of Counsel
  • Firm: Gibson, Dunn & Crutcher LLP, Dallas, TX
  • Experience: Litigates complex intellectual property cases in prominent patent venues such as the Eastern and Western Districts of Texas, the Northern District of California, the District of Delaware, and the International Trade Commission. He also has extensive experience with Patent Trial and Appeal Board (PTAB) proceedings and previously served as a law clerk to Judge Timothy B. Dyk of the United States Court of Appeals for the Federal Circuit.

• Audrey Yang (listed as Yeepay Audrey Yang in initial docket search)

  • Role: Associate
  • Firm: Gibson, Dunn & Crutcher LLP, Dallas, TX
  • Experience: Member of the Intellectual Property and Appellate and Constitutional Law Practice Groups. She previously clerked for Judge Alan D. Lourie of the United States Court of Appeals for the Federal Circuit and has successfully argued motions, including winning a Rule 12(c) motion to invalidate asserted patents in a patent infringement trial in the Western District of Texas.

• Ashbey N Morgan

  • Role: Associate
  • Firm: Gibson, Dunn & Crutcher LLP, Dallas, TX
  • Experience: Focuses on patent litigation across diverse technologies, including pharmaceuticals, medical devices, telecommunications, and software. She previously served as a law clerk to Chief Judge Rodney Gilstrap in the Eastern District of Texas, where she gained substantive experience in all phases of litigation, including Markman hearings and trials.

• Melissa Richards Smith

  • Role: Partner, Local Counsel
  • Firm: Gillam & Smith, LLP, Marshall, TX (also has a Tyler, TX office)
  • Experience: An highly experienced trial lawyer in the Eastern District of Texas, she has tried multiple patent cases to verdict for both plaintiffs and defendants, resulting in non-infringement and invalidity verdicts. She has served as local counsel for visiting lawyers in over three thousand patent cases and is recognized as a leading local counsel for defendants in patent litigation.

• Mark Nolan Reiter

  • Role: Counsel of Record (specific role such as partner or associate not specified in search results)
  • Firm: Gibson, Dunn & Crutcher LLP, Dallas, TX
  • Experience: Specific patent litigation experience is not readily available in the provided search results.