Boston Dynamics v. Ghost Robotics: 7-Patent Legged Robot Dispute Ends in Settlement
Boston Dynamics filed suit in the Delaware District Court in November 2022, asserting seven patents covering core legged-robot technologies against rival Ghost Robotics. The case resolved via a confidential settlement and was dismissed with prejudice after 783 days of litigation.
Boston Dynamics’ broad patent assault on quadruped rival Ghost Robotics
On November 11, 2022, Boston Dynamics, Inc. filed suit against Ghost Robotics Corporation in the U.S. District Court for the District of Delaware before Judge Maryellen Noreika. The complaint asserted seven patents spanning legged-robot locomotion control, gait disturbance handling, stair negotiation, screw actuation, and self-righting systems — technologies fundamental to operating quadruped robots in real-world environments.
The case closed on January 2, 2025, when the parties filed a stipulated dismissal under Federal Rule of Civil Procedure 41(a)(1)(A)(ii), citing a settlement agreement. All claims Boston Dynamics raised or could have raised, and all defenses and counterclaims Ghost Robotics raised or could have raised, were dismissed with prejudice. Each party bears its own costs and attorneys’ fees, and the court retained jurisdiction to enforce the dismissal order.
At 783 days, the case ran for over two years before settling — consistent with multi-patent portfolio disputes that often resolve once claim construction or dispositive motion practice clarifies litigation risk. The financial terms of the settlement remain confidential. It is unknown from the public record whether Ghost Robotics obtained any licence to Boston Dynamics’ patent portfolio, or whether the settlement included product design-around commitments.
Filing to Dismissed with Prejudice in 783 days
783 days — above average for a multi-patent infringement action in D. Del.
Dismissed with prejudice: what the settlement resolution means for both parties
Rule 41(a)(1)(A)(ii) stipulated dismissal explained
A Rule 41(a)(1)(A)(ii) dismissal with prejudice is a voluntary, jointly filed termination of all claims. ‘With prejudice’ means Boston Dynamics cannot re-file the same infringement claims against Ghost Robotics on these seven patents. The court retains jurisdiction solely to enforce the settlement agreement if either party breaches its terms.
Permanent bar on re-filingBoston Dynamics: patents intact, litigation leverage deployed
Boston Dynamics’ seven asserted patents remain valid and enforceable — no court ruling cancelled or narrowed any claim. The with-prejudice dismissal bars only these specific claims against Ghost Robotics. The confidential settlement likely reflects some commercial accommodation. Boston Dynamics retains full freedom to assert the same patents against other third parties.
Patents survive, enforceable vs. othersGhost Robotics: counterclaims extinguished, terms undisclosed
Ghost Robotics’ defenses and counterclaims — which may have included invalidity or non-infringement contentions — are also dismissed with prejudice. The public record does not disclose whether Ghost Robotics secured a licence, agreed to design changes, or made any payment. The with-prejudice bar on counterclaims suggests Ghost Robotics cannot later challenge these specific patents on previously-raised grounds in a new action.
Counterclaims permanently closedQuadruped robotics IP landscape: settlement signals portfolio strength
A with-prejudice settlement after 783 days of active litigation typically signals that the defending party assessed meaningful infringement risk. For competitors entering legged-robot markets, this outcome reinforces Boston Dynamics’ patent portfolio as a credible enforcement instrument. Other quadruped robotics developers should treat Boston Dynamics’ locomotion and actuation patents as live enforcement risks requiring FTO analysis.
Heightened FTO risk for sectorFull party and counsel information
| Role | Name | Type | Detail |
|---|---|---|---|
| Plaintiff | Boston Dynamics, Inc. | Company | Advanced legged-robotics developer — holder of US9308648B2 and 6 related locomotion patentsSearch in Eureka ↗ |
| Defendant | Ghost Robotics Corporation | Company | Quadruped robot manufacturer and Boston Dynamics commercial rivalSearch in Eureka ↗ |
| Plaintiff counsel | Brian P. Egan | Attorney | Counsel for Boston Dynamics, Inc.Search in Eureka ↗ |
| Plaintiff counsel | Cameron Paul Clark | Attorney | Counsel for Boston Dynamics, Inc.Search in Eureka ↗ |
| Plaintiff counsel | Jack B. Blumenfeld | Attorney | Counsel for Boston Dynamics, Inc.Search in Eureka ↗ |
| Plaintiff law firm | Morris, Nichols, Arsht & Tunnell LLP | Law Firm | Representing Boston Dynamics, Inc.Search in Eureka ↗ |
| Defendant counsel | Andrew Russell | Attorney | Counsel for Ghost Robotics CorporationSearch in Eureka ↗ |
| Defendant counsel | Cara E. Regan | Attorney | Counsel for Ghost Robotics CorporationSearch in Eureka ↗ |
| Defendant counsel | Christian J. Singewald | Attorney | Counsel for Ghost Robotics CorporationSearch in Eureka ↗ |
| Defendant counsel | Daryll Hawthorne-Bernardo | Attorney | Counsel for Ghost Robotics CorporationSearch in Eureka ↗ |
| Defendant counsel | Elizabeth A. Niemeyer | Attorney | Counsel for Ghost Robotics CorporationSearch in Eureka ↗ |
| Defendant counsel | Emily DiBenedetto | Attorney | Counsel for Ghost Robotics CorporationSearch in Eureka ↗ |
| Defendant counsel | Frank A. DeCosta , III | Attorney | Counsel for Ghost Robotics CorporationSearch in Eureka ↗ |
| Defendant counsel | Karen Elizabeth Keller | Attorney | Counsel for Ghost Robotics CorporationSearch in Eureka ↗ |
| Defendant counsel | Kelly S. Horn | Attorney | Counsel for Ghost Robotics CorporationSearch in Eureka ↗ |
| Defendant counsel | Malcom T. Meeks | Attorney | Counsel for Ghost Robotics CorporationSearch in Eureka ↗ |
| Defendant counsel | Milan F. Feliciello | Attorney | Counsel for Ghost Robotics CorporationSearch in Eureka ↗ |
| Defendant counsel | Mingji Jin | Attorney | Counsel for Ghost Robotics CorporationSearch in Eureka ↗ |
| Defendant counsel | Nathan Roger Hoeschen | Attorney | Counsel for Ghost Robotics CorporationSearch in Eureka ↗ |
| Defendant law firm | Shaw Keller LLP | Law Firm | Representing Ghost Robotics CorporationSearch in Eureka ↗ |
| Defendant law firm | White & Williams LLP | Law Firm | Representing Ghost Robotics CorporationSearch in Eureka ↗ |
| Presiding judge | Judge Maryellen Noreika | Judge | Delaware District CourtSearch in Eureka ↗ |
Official order — verbatim text
The stipulated dismissal language is notably comprehensive: it extinguishes not only claims actually raised but all claims that ‘could have raised’ by either party. This broad preclusive scope, standard in settlement-driven Rule 41 dismissals, effectively resolves the dispute with finality. The court’s retained jurisdiction to enforce the order is a practical safeguard allowing either party to return to Judge Noreika if settlement terms are breached, without needing to file a new action.
US9308648B2 — legged robot locomotion and gait control patent portfolio
The seven asserted patents collectively cover fundamental operational capabilities of legged robots: managing gait disturbances with asynchronous timing (US9308648B2), autonomous locomotion and navigation (US11073842B1, US11123869B2), stair-negotiation (US9387588B1), systems for robotic self-righting (US11131368B2), spread spectrum radar-based sensing (US10253855B2), and screw actuation for robot legs (US9662791B1). Application dates span 2014 to 2021, reflecting a sustained, layered R&D investment by Boston Dynamics across multiple generations of legged-robot development.
Collectively, these patents cover multiple technology layers that any commercially deployed quadruped robot must address — balance recovery, terrain adaptation, joint actuation, and self-recovery. For competitors, the breadth of this portfolio makes targeted design-arounds complex: avoiding one patent family may not resolve exposure under others. The portfolio’s longevity — with the earliest application dating to 2014 — also suggests Boston Dynamics has accumulated significant prosecution history that shapes claim scope in ways that require careful FTO review.
Should you run an FTO against Boston Dynamics’ legged-robot patent portfolio?
Any company designing, manufacturing, or commercialising quadruped or multi-legged robots should treat this portfolio as a priority FTO target. The seven patents in this case cover technologies — gait disturbance handling, stair climbing, screw actuation, and self-righting — that are not optional features but core system requirements. The settlement’s with-prejudice scope confirms Boston Dynamics is willing to litigate these patents aggressively in federal court.
PatSnap Eureka’s FTO Search Agent can map each of the seven patent families against your product architecture, flag relevant claims, and surface prior art that may support invalidity arguments. Eureka also tracks the prosecution history and any post-grant proceedings for each patent, giving your team a complete picture of enforceable claim scope before you ship or fundraise.
Run a freedom-to-operate analysis on US9308648B2 to assess your product’s exposure
Run FTO in Eureka →Similar legged-robot and advanced robotics patent cases in D. Del.
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What this case signals for the legged-robotics IP landscape
Seven patents, two years of litigation, and a confidential settlement: the commercial stakes in quadruped robot IP are rising fast.
Boston Dynamics’ portfolio covers foundational locomotion and actuation tech
The seven asserted patents span gait disturbance handling, stair negotiation, screw actuators, and self-righting — core building blocks of any capable quadruped robot. Any company commercialising legged robots should conduct an FTO analysis against these patents before product launch or next funding round.
With-prejudice dismissals after extended litigation suggest settlement leverage
Cases dismissed with prejudice after 783 days typically settle after key litigation milestones — claim construction or expert discovery — have clarified infringement exposure. The cost-bearing structure (each party its own fees) is consistent with a negotiated licence or cross-licence rather than a capitulation.
Boston v Ghost — key questions answered
Boston Dynamics asserted seven patents: US9308648B2, US11073842B1, US11123869B2, US9387588B1, US11131368B2, US10253855B2, and US9662791B1. These patents cover legged-robot technologies including gait disturbance handling, stair negotiation, screw actuation, self-righting systems, and locomotion control.
The case was dismissed with prejudice on January 2, 2025, pursuant to a stipulated dismissal under Federal Rule of Civil Procedure 41(a)(1)(A)(ii) and a confidential settlement agreement. All claims, counterclaims, and defenses were extinguished permanently. Each party bears its own costs and attorneys’ fees.
The with-prejudice dismissal bars Ghost Robotics from re-litigating defenses and counterclaims it raised or could have raised in this action. However, it does not necessarily bar an independent IPR petition at the USPTO by a third party, nor does it bar Ghost Robotics from raising invalidity as a defence if Boston Dynamics brings a new infringement action on different grounds.
Nothing in the dismissal limits Boston Dynamics’ right to enforce the seven asserted patents against other parties. The with-prejudice bar applies only to claims against Ghost Robotics. Companies in the legged-robotics sector should treat these patents as live enforcement risks and conduct freedom-to-operate analysis before commercialising competing products.
The case lasted 783 days — from November 11, 2022 to January 2, 2025. This duration is consistent with multi-patent disputes that proceed through claim construction and substantive discovery before settling. The timeline suggests the parties likely reached resolution after gaining clarity on infringement exposure, though the specific settlement trigger is not disclosed in the public record.
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