Ethanol Boosting Systems, LLC et al. v. Ford Motor Company

Ethanol Boosting Systems, LLC (EBS) and the Massachusetts Institute of Technology (MIT) initiated patent infringement litigation against Ford Motor Company in the District of Delaware. MIT, a prominent research university, is the owner of the asserted patents and has exclusively licensed them to Ethanol Boosting Systems, LLC, which acts as the patent assertion entity (PAE) in this context, seeking to monetize the intellectual property through litigation. The defendant, Ford Motor Company, is a major automotive manufacturer.

The litigation centered on Ford's alleged infringement through its vehicles that incorporate an "optimized ethanol direct injection fuel management system" for gasoline engines. This technology, aimed at mitigating "engine knock" and improving efficiency, utilizes both direct injection and port fuel injection. The primary patent at issue, U.S. Patent No. 10,619,580, generally describes a fuel management system for spark-ignition engines that employs both direct and port fuel injection to suppress engine knock by introducing an anti-knock agent, with the fraction of direct injection increasing at higher torque levels.

The case, assigned to Judge Colm F. Connolly, was filed in the District of Delaware (Case No. 1:20-cv-00706-CFC), a jurisdiction frequently chosen for patent disputes due to its judicial expertise, predictable docket, and a robust body of patent-specific precedent, as well as the high number of corporations incorporated in the state. The district court proceedings were stayed and administratively closed in December 2022, pending the final resolution of parallel inter partes review (IPR) proceedings at the Patent Trial and Appeal Board (PTAB). This IPR linkage is a notable aspect of the case, as Ford successfully challenged the validity of the asserted patents, including U.S. Patent No. 10,619,580, at the PTAB. This finding of unpatentability was subsequently affirmed by the U.S. Court of Appeals for the Federal Circuit on December 23, 2025, effectively rendering the patent unenforceable. The appellate review involved complex claim construction disputes, particularly regarding whether the claims required different fuels for the direct and port injection systems.

Ethanol Boosting Systems, LLC and Massachusetts Institute of Technology (collectively, "Plaintiffs" or "EBS/MIT") initiated patent infringement litigation against Ford Motor Company in the District of Delaware, case number 1:20-cv-00706-CFC. The case has been stayed and administratively closed, primarily due to the outcome of parallel inter partes review (IPR) proceedings.

Here is a chronological summary of the key legal developments and outcome:

• 2020-05-27: Complaint Filed. Ethanol Boosting Systems, LLC and Massachusetts Institute of Technology filed a complaint for patent infringement against Ford Motor Company in the U.S. District Court for the District of Delaware, asserting U.S. Patent No. 10,619,580, among others.
• 2020-07-20: Answer and Counterclaims Filed. Ford Motor Company filed its Answer, Defenses, Counterclaims, and Jury Demand (D.I. 9).
• 2020-12-23: IPR Petitions Filed. Ford Motor Company petitioned the Patent Trial and Appeal Board (PTAB) for inter partes review (IPR) of U.S. Patent Nos. 10,619,580, 10,791,760, and 9,708,965.
• Prior to IPR Institution: District Court Claim Construction. Before the PTAB instituted IPRs, the District Court issued a claim construction ruling. It construed the term "DI Fuel" to require "(1) different fuel for direct injection and port injection and (2) an anti-knock agent other than gasoline." Based on this construction, the District Court entered a judgment of non-infringement.
• 2021-07-02: PTAB Initially Denies IPR Institution. The PTAB initially denied Ford's petitions for IPR, concluding that, under its then-adopted claim construction (requiring a fuel different from that used in the port injector), Ford's prior art arguments for invalidity were insufficient.
• EBS Appeals District Court Claim Construction. EBS appealed a portion of the District Court's claim construction to the Federal Circuit.
• 2022-07: Federal Circuit Vacates District Court Claim Construction ("EBS I"). The Federal Circuit, in a decision referred to as "EBS I," vacated the District Court's claim construction. The Federal Circuit held that the patent claims encompass single-fuel embodiments, thereby rejecting the requirement for different fuels in the direct injection and port injection systems.
• 2022-11: PTAB Grants Rehearing and Institutes IPRs. Following the Federal Circuit's decision in EBS I, Ford petitioned the PTAB for rehearing on its IPR institution denials. The PTAB granted Ford's rehearing request in November 2022 (fifteen months after Ford's request) and proceeded to institute IPR based on the Federal Circuit's clarified claim construction.
• 2022-12: District Court Case Stayed and Administratively Closed. The District of Delaware litigation (1:20-cv-00706-CFC) was stayed and administratively closed, pending the resolution of the IPR proceedings.
• PTAB Final Written Decisions. In its final written decisions for the IPRs (including IPR2021-00339 for U.S. Patent No. 10,619,580), the PTAB found the challenged claims of U.S. Patent Nos. 10,619,580, 10,791,760, and 9,708,965 to be unpatentable as obvious. The PTAB adopted a plain meaning of "fuel" and did not exclude gasoline as an anti-knock agent, consistent with the Federal Circuit's guidance.
• EBS Appeals PTAB Decisions to Federal Circuit. EBS and MIT appealed the PTAB's unpatentability decisions to the U.S. Court of Appeals for the Federal Circuit (Case No. 24-1381). EBS argued, among other things, that the PTAB lacked authority to delay its institution decision and that the Board should have been bound by the district court's initial claim construction.
• 2025-12-23: Federal Circuit Affirms PTAB's Unpatentability Rulings. The Federal Circuit affirmed the PTAB's decisions, finding the claims of U.S. Patent Nos. 10,619,580, 10,791,760, and 9,708,965 unpatentable as obvious. The Federal Circuit rejected EBS's procedural and substantive arguments, including the challenge to the PTAB's delay in instituting IPRs and its claim construction interpretation.
• Current Status: Patent Extinguished. As a result of the Federal Circuit's affirmance of the PTAB's unpatentability finding, U.S. Patent No. 10,619,580 is "effectively extinguished as an enforceable asset." The district court case remains stayed and administratively closed, and the outcome of the IPRs and subsequent appeal means the asserted patent is no longer valid, precluding further infringement claims.

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thought
The user wants to find news and analysis coverage of the patent litigation Ethanol Boosting Systems, LLC et al. v. Ford Motor Company. I need to summarize what the press has reported, highlight the significance, note any reported numbers, and point out where accounts differ or go beyond the court record. I must attribute every claim to its outlet with a markdown link. I will search for articles using the case caption, party names, patent numbers, and the outcome of the Federal Circuit affirmation.

I will prioritize articles specifically about this case. If there is little or no press coverage, I will state that.

My search queries will include various combinations to maximize the chances of finding relevant articles from legal news outlets and potentially mainstream or trade press.News and analysis coverage of Ethanol Boosting Systems, LLC et al. v. Ford Motor Company has largely focused on the inter partes review (IPR) proceedings at the Patent Trial and Appeal Board (PTAB) and the subsequent appeal to the Federal Circuit, which ultimately led to the invalidation of the asserted patents.

Law360 reported on December 26, 2025, that Ford Motor Company had successfully defeated "MIT-linked co's engine tech patents" at the Federal Circuit. The article highlighted that the appeals court affirmed the PTAB's findings that the claims of U.S. Patent Nos. 10,619,580, 10,791,760, and 9,708,965, owned by Ethanol Boosting Systems (EBS) and MIT, were unpatentable as obvious. This decision followed a complex procedural history, where the Federal Circuit had previously vacated a district court's claim construction in "EBS I," paving the way for the PTAB to institute IPRs. The report also noted that EBS had challenged the PTAB's authority to delay institution decisions and its claim construction interpretation, but these arguments were rejected by the Federal Circuit. JD Supra also published an alert on December 26, 2025, summarizing the Federal Circuit's affirmance of the PTAB's obviousness findings, emphasizing the procedural intricacies, particularly regarding the PTAB's delayed institution decision and the Federal Circuit's role in guiding the claim construction.

The case is considered significant within patent law circles as it illustrates the strategic interplay between district court litigation, IPR proceedings, and Federal Circuit appeals, particularly concerning claim construction and the PTAB's discretion in instituting IPRs. The outcome signifies a complete victory for Ford, as the patents at issue, central to the infringement allegations, have been rendered unenforceable. While specific damages sought in the district court were not detailed in the available news coverage, the successful invalidation of the patents by Ford prevented any potential liability for infringement. The reporting primarily focuses on the legal process and outcome, without delving into broader market impact or executive statements.

The plaintiff(s) in Ethanol Boosting Systems, LLC et al. v. Ford Motor Company are represented by counsel from Susman Godfrey LLP, with in-house counsel from the Massachusetts Institute of Technology also involved.

Here is the identified counsel of record:

• Steven M. Seigel

  • Role: Lead Counsel (for plaintiffs-appellants in Federal Circuit appeals)
  • Firm: Susman Godfrey LLP, Seattle, WA
  • Note on experience: Seigel is a partner at Susman Godfrey and has experience arguing for plaintiffs-appellants in patent cases before the Federal Circuit.

• Matthew Robert Berry

  • Role: Lead Counsel (for plaintiffs-appellants in Federal Circuit appeals)
  • Firm: Susman Godfrey LLP (office location not specified in the snippets, but often associated with the lead counsel's firm office)
  • Note on experience: Berry is also listed as representing plaintiffs-appellants in the Federal Circuit.

• Andres Healy

  • Role: Lead Counsel (argued for plaintiffs-appellants in Federal Circuit appeals)
  • Firm: Susman Godfrey LLP, Seattle, WA
  • Note on experience: Healy argued for the plaintiffs-appellants in at least one Federal Circuit appeal related to this matter.

• William Daniel O'Connell

  • Role: Counsel (also represented plaintiffs-appellants in a Federal Circuit appeal)
  • Firm: Susman Godfrey LLP, New York, NY
  • Note on experience: O'Connell is listed as representing the plaintiffs-appellants in a Federal Circuit appeal decided in 2020.

• Tena Z. Herlihy

  • Role: In-house Counsel for Massachusetts Institute of Technology
  • Firm: MIT Office of the General Counsel, Cambridge, MA
  • Note on experience: Herlihy joined MIT as Counsel in 2006, and her primary practice areas include patent litigation management, technology licensing, and trademark prosecution and enforcement. She advises on intellectual property-related concerns and previously advised outside counsel on intellectual property litigation at PAREXEL International Corporation.

The available search results do not explicitly name local counsel for the plaintiff(s) in the District of Delaware case 1:20-cv-00706-CFC. The case status is "Stayed and Administratively Closed," pending IPR resolution, which may limit recent docket activity. While other MIT in-house attorneys such as Richelle A. Nessralla and Jay Wilcoxson are listed as involved in intellectual property matters for MIT, Tena Herlihy's specific mention of "patent litigation management" makes her the most directly relevant in-house counsel for this context.

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thought
The user is asking for the counsel of record representing the defendant, Ford Motor Company, in the case Ethanol Boosting Systems, LLC et al. v. Ford Motor Company, case number 1:20-cv-00706-CFC, in the District of Delaware. I need to identify their names, roles, firms, office locations, and relevant experience. I will use web search with various combinations of the case name, defendant's name, and common patent litigation firms, as well as specific search terms for "defendant counsel" and "in-house counsel."

Based on the previous section, the case has been stayed and administratively closed, and the IPR proceedings at the PTAB and Federal Circuit are relevant. It's highly likely that the same counsel represented Ford in both the district court and the IPR/Federal Circuit appeals.Here is the identified counsel of record representing Ford Motor Company in Ethanol Boosting Systems, LLC et al. v. Ford Motor Company:

Lead Counsel (District Court, PTAB, and Federal Circuit)

• Matthew J. Moore

  • Role: Lead Counsel
  • Firm: Latham & Watkins LLP (office location not specified, but likely with a national IP practice)
  • Note on experience: Moore is a highly-ranked patent trial attorney who has served as lead counsel for Ford in numerous patent infringement cases, including successfully defeating preliminary injunctions, staying cases pending IPRs, and winning 16 appeals affirming claim invalidations in IPRs. He was instrumental in four patent case wins for Ford at the Federal Circuit against Paice LLC in 2017 involving hybrid technology, which included successful IPR challenges. He is recognized for his adroit handling of complex IP disputes and IPRs for a broad range of clients, including major automotive and technology companies.

• Ruffin Cordell

  • Role: Lead Counsel
  • Firm: Fish & Richardson (office location not specified, but has offices nationwide including Delaware)
  • Note on experience: Cordell has over three decades of experience as lead counsel in high-stakes patent and trade secret litigation, representing major brands. He represented Ford in patent cases against Paice LLC concerning hybrid vehicle technology, where Ford successfully sought inter partes review (IPR) of the asserted patents at the PTAB, leading to the invalidation of key claims, which was subsequently affirmed by the Federal Circuit.

• James M. Glass

  • Role: Lead Counsel (Post-Grant patent practice)
  • Firm: Quinn Emanuel Urquhart & Sullivan, LLP, New York
  • Note on experience: Glass chairs Quinn Emanuel's Post-Grant patent practice and has been lead counsel in over 500 PTAB proceedings. He is ranked among the top ten most active and best performing attorneys at the PTAB and has successfully defended wins at the Federal Circuit. Quinn Emanuel has represented global automotive companies in patent disputes, including IPR petitions.

Other Noted Counsel (Likely involved in IPRs or broader Ford patent litigation)

• Stuart M. Rosenberg

  • Role: Partner
  • Firm: Gibson, Dunn & Crutcher LLP, Palo Alto, CA
  • Note on experience: Rosenberg's practice focuses on intellectual property litigation, including disputes in district courts, the PTAB, and the Federal Circuit. He has represented clients in the automotive design industry.

• Brian Rosenthal

  • Role: Partner
  • Firm: Gibson, Dunn & Crutcher LLP, New York, NY
  • Note on experience: Rosenthal is a trial lawyer specializing in patent litigation across various technologies, including computer software, electronics, and medical devices. He has litigated over 125 patent cases, often as lead counsel, and has experience with IPR and post-grant review petitions.

• Susan Morrison

  • Role: Managing Principal (Delaware office), Patent Trial Lawyer
  • Firm: Fish & Richardson, Delaware office
  • Note on experience: Morrison has over 20 years of experience as a patent trial lawyer and litigator, with experience trying cases in the District of Delaware and other venues.

• Andrew Turner

  • Role: Counsel (in IPR proceedings for Ford)
  • Firm: Brooks Kushman (office location not specified)
  • Note on experience: Turner represents Ford in inter partes review proceedings before the PTAB, including recent challenges to infotainment system patents.

• John LeRoy

  • Role: Counsel (in IPR proceedings for Ford)
  • Firm: Brooks Kushman (office location not specified)
  • Note on experience: LeRoy represents Ford in inter partes review proceedings before the PTAB.

• Christopher Smith

  • Role: Counsel (in IPR proceedings for Ford)
  • Firm: Brooks Kushman (office location not specified)
  • Note on experience: Smith represents Ford in inter partes review proceedings before the PTAB.

• Kyle Konz

  • Role: Counsel (in IPR proceedings for Ford)
  • Firm: Brooks Kushman (office location not specified)
  • Note on experience: Konz represents Ford in inter partes review proceedings before the PTAB.

• Yasmeen Moradshahi

  • Role: Counsel (in IPR proceedings for Ford)
  • Firm: Brooks Kushman (office location not specified)
  • Note on experience: Moradshahi represents Ford in inter partes review proceedings before the PTAB.

In-House Counsel

• Bradley Gayton
  • Role: General Counsel
  • Firm: Ford Motor Company, Dearborn, MI (corporate headquarters)
  • Note on experience: Gayton serves as the General Counsel for Ford Motor Company, overseeing all legal matters for the automotive manufacturer.

Ford Motor Company successfully challenged the patentability of U.S. Patent No. 10,619,580 and related patents at the Patent Trial and Appeal Board (PTAB), with the Federal Circuit affirming the unpatentability ruling on December 23, 2025. The listed attorneys and firms have significant experience in these types of patent challenges and appeals on behalf of automotive clients like Ford.