Stryker v. Ferno-Washington: 9-Patent Ambulance Cot Dispute Settles After 938 Days
Stryker Corporation and Stryker Sales, LLC brought a nine-patent infringement action against Ferno-Washington and Ferno Group in the Southern District of Ohio, targeting rival powered ambulance cots and cot fastener systems. The case resolved via a confidential settlement and stipulated dismissal with prejudice — closing after nearly two and a half years of litigation.
Nine-Patent Ambulance Cot War Between Direct Competitors Ends in Settlement
Stryker Corporation and its commercial subsidiary Stryker Sales, LLC filed suit on October 12, 2022, in the U.S. District Court for the Southern District of Ohio against Ferno-Washington, Inc. and its parent Ferno Group, Inc. The complaint asserted nine patents — a combination of design patents (USD833623S, USD875950S, USD794205S), utility patents, and a reissue patent — covering powered ambulance cots, integrated patient transport and loading systems, and universal cot fasteners. The accused products were Ferno’s POWER X1 Ambulance Cot, PRO F1 Universal Cot Fastener, and iNX Integrated Patient Transport and Loading System.
The litigation concluded on May 7, 2025, when the parties filed a joint stipulation of dismissal with prejudice under Federal Rule of Civil Procedure 41, referencing the terms of a confidential settlement agreement. The court retained jurisdiction to enforce the order. Critically, both sides expressly waived any right to seek attorney’s fees or costs — including claims under 35 U.S.C. § 285, the patent statute’s exceptional-case fee-shifting provision — suggesting a mutual, negotiated resolution rather than a capitulation by either side.
The 938-day duration — filed late 2022 and closed May 2025 — suggests the parties litigated substantively through at least some discovery or claim construction before reaching terms. The inclusion of counterclaims by Ferno (referenced in the dismissal language) indicates the defendant mounted an active defense, potentially asserting invalidity or its own IP. The specific financial terms, licensing scope, and any cross-licensing or design-around commitments remain confidential and cannot be determined from the public record.
Filing to Case Dismissed in 938 days
938 days — well above the median district court patent case duration of ~700 days, suggesting contested motion practice before settlement
Dismissed with prejudice: what the settlement stipulation means for both parties
Dismissal with prejudice bars Stryker from re-filing these claims
A Rule 41 dismissal with prejudice operates as a final adjudication on the merits. Stryker cannot re-assert any of the nine patents against Ferno for the same accused products in a new action. The court’s retained jurisdiction to enforce the order is standard practice and allows either party to return to court if the settlement terms are breached — without needing to initiate a fresh lawsuit.
Claim preclusion appliesStryker secures a binding resolution — but terms remain opaque
Stryker’s willingness to settle with prejudice and waive § 285 fee claims suggests it achieved its core commercial objective — likely a license, design-around commitment, or market arrangement — without needing a court-ordered damages award. For a dominant market player, a negotiated exit that binds a competitor by contract may be preferable to a years-long trial with appeal risk across nine patents of varying strength.
Confidential termsFerno avoids adverse judgment but counterclaims also dismissed
Ferno’s counterclaims — which likely included invalidity and non-infringement positions — were dismissed with prejudice alongside Stryker’s claims. This means Ferno cannot re-litigate those counterclaim positions in a new suit either. Whether Ferno secured a license to continue selling the X1 Cot, F1 Fastener, and iNX system, or agreed to design-arounds, is unknown from the public record. The mutual cost waiver suggests neither party was in a dominant litigation posture.
Counterclaims also closedSettlement leaves Stryker’s nine-patent ambulance cot portfolio intact
No patent was invalidated or adjudicated unenforceable. Stryker’s design and utility patent portfolio covering powered ambulance cot technology — including the reissue patent USRE44884 — survives without public weakening. For other EMS equipment competitors, this outcome suggests Stryker is willing to enforce aggressively and litigate for nearly three years before resolving. Third parties operating in the powered cot and patient transport space should treat these nine patents as live enforcement risk.
Portfolio remains enforceableFull party and counsel information
| Role | Name | Type | Detail |
|---|---|---|---|
| Plaintiff | Stryker Corporation | Company | Medical equipment manufacturer — holder of USD833623S and 8 further ambulance cot patentsSearch in Eureka ↗ |
| Co-Plaintiff | Stryker Corporation | Company | Search in Eureka ↗ |
| Co-Plaintiff | Stryker Sales, LLC | Company | Search in Eureka ↗ |
| Defendant | Ferno-Washington, Inc. | Company | Emergency medical equipment manufacturer; maker of the POWER X1 cot, PRO F1 fastener, and iNX cot systemSearch in Eureka ↗ |
| Co-Defendant | Ferno Group, Inc. | Company | Search in Eureka ↗ |
| Plaintiff counsel | Deborah Ann Laughton | Attorney | Counsel for Stryker CorporationSearch in Eureka ↗ |
| Plaintiff counsel | Jesse L. Jenike-Godshalk | Attorney | Counsel for Stryker CorporationSearch in Eureka ↗ |
| Plaintiff counsel | Michael Jonathan Weil | Attorney | Counsel for Stryker CorporationSearch in Eureka ↗ |
| Plaintiff counsel | Michael Tomsa | Attorney | Counsel for Stryker CorporationSearch in Eureka ↗ |
| Plaintiff counsel | Robert A. Surrette | Attorney | Counsel for Stryker CorporationSearch in Eureka ↗ |
| Plaintiff law firm | McAndrews, Held & Malloy Ltd. | Law Firm | Representing Stryker CorporationSearch in Eureka ↗ |
| Plaintiff law firm | Thompson Hine LLP | Law Firm | Representing Stryker CorporationSearch in Eureka ↗ |
| Defendant counsel | Aaron Mark Williams | Attorney | Counsel for Ferno-Washington, Inc.Search in Eureka ↗ |
| Defendant counsel | Andrew David Fleming | Attorney | Counsel for Ferno-Washington, Inc.Search in Eureka ↗ |
| Defendant counsel | Brian Scott Sullivan | Attorney | Counsel for Ferno-Washington, Inc.Search in Eureka ↗ |
| Defendant counsel | David Frederick Hine | Attorney | Counsel for Ferno-Washington, Inc.Search in Eureka ↗ |
| Defendant counsel | Jaci L. Overmann | Attorney | Counsel for Ferno-Washington, Inc.Search in Eureka ↗ |
| Defendant counsel | Michael J. Garvin | Attorney | Counsel for Ferno-Washington, Inc.Search in Eureka ↗ |
| Defendant counsel | William Hurst Oldach , III | Attorney | Counsel for Ferno-Washington, Inc.Search in Eureka ↗ |
| Defendant law firm | Dinsmore & Shohl LLP | Law Firm | Representing Ferno-Washington, Inc.Search in Eureka ↗ |
| Defendant law firm | Vorys Sayer Seymour & Pease LLP | Law Firm | Representing Ferno-Washington, Inc.Search in Eureka ↗ |
| Presiding judge | Judge N/A | Judge | Ohio Southern District CourtSearch in Eureka ↗ |
Official order — verbatim text
The joint stipulation expressly invokes Fed. R. Civ. P. 41 and references a separate Settlement Agreement whose terms are not part of the public record. The ‘with prejudice’ designation is legally operative: all nine asserted patents and all counterclaims are foreclosed from re-litigation between these parties. The court’s retained enforcement jurisdiction, combined with the bilateral § 285 waiver, is consistent with a structured settlement containing ongoing obligations — such as licensing royalties or product modification commitments — that either party may need court assistance to enforce.
USD0833623S and 8 further patents — powered ambulance cot and transport systems
The asserted portfolio spans nine patents across two distinct categories. Three design patents (USD833623S, USD875950S, USD794205S) protect the ornamental appearance of ambulance cot products, conferring protection against products that are substantially similar in visual impression. The five utility patents and one reissue (USRE44884) protect functional innovations in powered lifting, undercarriage mechanics, cot fastening, and integrated patient loading systems. Reissue patent USRE44884 — based on application US13/068358 — was granted after reexamination to broaden or correct the original claims, typically signalling Stryker regarded this as a high-value enforcement asset.
Stryker and Ferno are direct competitors in the emergency medical services equipment market, where powered ambulance cots represent a significant revenue category for hospital systems and EMS providers. The breadth of this portfolio — covering both how products look and how they mechanically function — reflects a strategy of creating multiple infringement vectors against a competing product line. For any medtech or EMS equipment company developing powered patient transport or cot fastening products, this portfolio represents an active enforcement boundary that survived nearly three years of litigation without a single patent being adjudicated invalid.
Should you run an FTO against these 9 Stryker ambulance cot patents?
Any company designing, manufacturing, or commercialising powered ambulance cots, integrated patient transport systems, or universal cot fastening mechanisms in the U.S. market should treat this nine-patent portfolio as a priority FTO target. Stryker demonstrated in this case that it will assert design and utility patents simultaneously across product families — meaning a clearance analysis limited to functional claims alone is insufficient. The three design patents require a visual comparison analysis; the utility patents and reissue require independent claim mapping.
PatSnap Eureka’s FTO Search Agent enables R&D and legal teams to run structured clearance searches across all nine patents simultaneously, flagging claim overlaps against a proposed product’s technical features and design language. Eureka’s AI-powered claim mapping highlights which independent claims pose the highest literal infringement risk, and surfaces prior art that may support design-around or invalidity arguments — helping teams make faster, evidence-backed go/no-go decisions before committing to product architecture.
Run a freedom-to-operate analysis on USD0833623S to assess your product’s exposure
Run FTO in Eureka →Similar ambulance cot and EMS equipment patent cases in U.S. district courts
Cases involving powered ambulance cot, patient transport, and emergency medical equipment patents in U.S. district courts — including Southern District of Ohio filings.
What Stryker v. Ferno signals for the EMS equipment IP landscape
A nine-patent enforcement action resolved quietly — but its implications for powered cot and patient transport IP are anything but quiet.
Multi-patent stacking in EMS equipment is now a proven litigation strategy
Stryker’s assertion of nine patents — spanning design registrations, utility patents, and a reissue — across three product families signals a deliberate IP stacking approach. Competitors in powered ambulance cot design, cot fastening systems, and integrated transport platforms face overlapping enforcement risk, making FTO clearance across all three categories essential before product launch.
Mutual § 285 fee waiver suggests prolonged, evenly matched litigation
Both parties voluntarily waiving their exceptional-case fee claims under 35 U.S.C. § 285 is commercially significant. It suggests neither side was confident it could prove the other’s conduct was exceptional, and that the settlement reflected genuine compromise. For defendants facing multi-patent suits, this pattern suggests Ferno maintained viable invalidity or non-infringement positions throughout.
Stryker v Ferno-Washington — key questions answered
Stryker asserted nine patents: design patents USD833623S, USD875950S, and USD794205S; utility patents US7398571B2, US8056950B2, US11090207B2, US7725968B2, and US10058464B2; and reissue patent USRE44884. The patents cover powered ambulance cot designs, integrated patient transport systems, and cot fastening mechanisms.
The case was dismissed with prejudice on May 7, 2025, pursuant to a joint stipulation under Fed. R. Civ. P. 41 and the terms of a confidential Settlement Agreement. Each party bore its own costs and fees, and both sides waived any right to seek attorney’s fees under 35 U.S.C. § 285. No patent was adjudicated invalid or unenforceable.
Stryker accused three Ferno products: the POWER X1 Ambulance Cot, the PRO F1 Universal Cot Fastener, and the iNX Integrated Patient Transport and Loading System. These products compete directly with Stryker’s own powered ambulance cot and transport product lines.
No. A dismissal with prejudice under Rule 41 via settlement carries no merits finding. No court adjudicated whether any of the nine patents were valid, infringed, or enforceable. The dismissal means only that neither party can re-litigate these specific claims against each other. The patents remain in force and enforceable against third parties.
Both parties expressly waived their right to seek attorney’s fees under 35 U.S.C. § 285, which permits fee awards in ‘exceptional’ patent cases. This bilateral waiver suggests neither side was confident it could establish exceptional-case conduct by the other, and is consistent with a contested, evenly balanced litigation that resolved through genuine commercial compromise rather than one-sided capitulation.
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