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Anova v. Shenzhen Jingtaitengda — Circulator Cooker Patent Dispute | PatSnap
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Case ID2:23-cv-00845
FiledJun 2023
ClosedJan 2025
Patent Litigation

Anova v. Shenzhen Jingtaitengda: Circulator Cooker Patent Dispute Ends in Stipulated Dismissal

Anova Applied Electronics brought a patent infringement action in the Western District of Washington against Chinese manufacturer Shenzhen Jingtaitengda and Inkbird Tech over US10455967B2, a patent covering circulator cooker technology. After 577 days of litigation, the parties jointly stipulated to dismiss the case with prejudice — a resolution that forecloses any future refiling of the same claims.

Resolution time
577days
577 days — longer than the median W.D. Wash. patent case, suggesting substantive pre-trial engagement
Patents asserted
1
US10455967B2 — circulator cooker precision temperature control technology
Outcome
Case Dismissed
Stipulated dismissal with prejudice — claims permanently extinguished, no costs awarded to either party
Cost ruling
No Costs
Order expressly provides no costs or fees to either party — each side bears its own litigation expense
Published by PatSnap Insights Team · Verified by PatSnap Eureka Data
Case overview

Circulator Cooker IP Fight Ends in Mutual Walk-Away After 577 Days

Anova Applied Electronics, Inc. — a leading brand in the consumer sous vide and precision cooking market — filed suit on June 6, 2023, in the Western District of Washington (Case No. 2:23-cv-00845) against three defendants: Shenzhen Jingtaitengda Technology Co., Ltd., Inkbird Tech CL, and Shenzhenshi Yingbozhikong Keji Youxian Gongsi. The complaint alleged infringement of US10455967B2, a patent covering circulator cooker technology, by products sold or distributed by the defendant entities.

The case concluded on January 3, 2025, when Judge James L. Robart entered an order of dismissal with prejudice pursuant to a joint stipulation filed by both sides at Dkt. #90. The order expressly provides that neither party receives costs or fees. A dismissal with prejudice on stipulation of both parties typically signals that the dispute has been resolved — whether through a private settlement, cross-licensing arrangement, or an agreement to cease the challenged conduct — though the specific commercial terms are not disclosed in the public record.

The 577-day duration, the involvement of multiple Chinese hardware manufacturers, and the bilateral no-costs term are all consistent with a negotiated resolution reached after meaningful discovery or claim construction activity. The fact that the defendants engaged multiple defence firms — including Merchant & Gould, Glacier Law, and Stokes Lawrence — suggests the case was actively contested before a deal was struck. The underlying terms of any settlement, licence, or product modification agreement remain confidential and cannot be confirmed from the docket alone.

Case at a glance
Case no.2:23-cv-00845
CourtWashington Western
JudgeJames L. Robart
FiledJune 6, 2023
ClosedJanuary 3, 2025
Duration577 days
OutcomeCase Dismissed
Verdict causeInfringement Action
BasisCase Dismissed
Prior Art Intelligence
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Case data sourced from PACER / Washington Western District Court via PatSnap Eureka Litigation Intelligence Explore similar cases ↗
Case timeline

Filing to Case Dismissed in 577 days

577 days — longer than the median W.D. Wash. patent case, suggesting substantive pre-trial engagement

Case timeline: Complaint filed JUN 6 2023, MAR–APR — 577 days total Horizontal timeline showing the three key events in Anova Applied Electronics, Inc. v Shenzhen Jingtaitengda Technology Co., Ltd. from filing to resolution. Source: PACER, Washington Western District Court. JUN 6 2023 Complaint filed Pre-trial proceedings JAN 3 2025 Case Dismissed 577 DAYS TOTAL
Dismissal terms

Dismissed with prejudice by stipulation: what the order means for both parties

Legal mechanism

Stipulated dismissal with prejudice bars re-filing these claims

A dismissal with prejudice entered on the joint stipulation of both parties is a final adjudication on the merits for preclusion purposes. Under Fed. R. Civ. P. 41(a)(1)(A)(ii), both parties signing the stipulation makes the dismissal self-executing. Crucially, ‘with prejudice’ means Anova cannot refile the same infringement claims against these defendants based on the same accused products and the same patent — those claims are permanently extinguished.

Rule 41 stipulated dismissal
Plaintiff outcome

Anova exits with confidential terms — and a permanently closed docket

For Anova, a with-prejudice dismissal carrying no public money judgment typically reflects a private resolution — potentially a licence, a market-exit agreement, or a product redesign commitment. The public record is silent on specific terms. Anova retains US10455967B2 and can still assert it against different defendants or different products, but these defendants are shielded from further suit on these claims.

Private resolution likely
Defendant outcome

Defendants obtain finality — but the patent remains in force

Shenzhen Jingtaitengda, Inkbird Tech CL, and Yingbozhikong secure a permanent bar against Anova re-asserting these specific claims. The no-costs term means neither side bears the other’s legal fees publicly. However, US10455967B2 itself is not invalidated — any obligations the defendants may have agreed to privately (e.g., royalties, design changes) are unknown from the public docket.

Claims barred; patent survives
Commercial implications

IP enforcement against Chinese hardware brands is costly but active

This case is consistent with a broader pattern of U.S. kitchen appliance brands pursuing Chinese OEM and white-label manufacturers selling competing precision cooking products. The engagement of specialist cross-border IP firms on the defence side suggests these manufacturers are increasingly prepared to contest, not simply settle, infringement actions. For competitors in the circulator cooker space, US10455967B2 remains a live enforcement risk.

Cross-border enforcement risk
Legal analysis based on PACER docket records for case 2:23-cv-00845 and PatSnap Eureka litigation intelligence Search PatSnap Eureka ↗
Parties and representation

Full party and counsel information

RoleNameTypeDetail
PlaintiffAnova Applied Electronics, Inc.CompanyPrecision cooking appliance company — holder of US10455967B2Search in Eureka ↗
DefendantShenzhen Jingtaitengda Technology Co., Ltd.CompanyShenzhen Jingtaitengda Tech and affiliates Inkbird Tech CL and Yingbozhikong — Chinese circulator cooker manufacturers and distributorsSearch in Eureka ↗
Co-DefendantInkbird Tech CLIndividualSearch in Eureka ↗
Co-DefendantShenzhenshi Yingbozhikong Keji Youxian GongsiIndividualSearch in Eureka ↗
Plaintiff counselAshley RobinsonAttorneyCounsel for Anova Applied Electronics, Inc.Search in Eureka ↗
Plaintiff counselJessica ZurloAttorneyCounsel for Anova Applied Electronics, Inc.Search in Eureka ↗
Plaintiff counselMaryann ZakiAttorneyCounsel for Anova Applied Electronics, Inc.Search in Eureka ↗
Plaintiff counselRay AshburgAttorneyCounsel for Anova Applied Electronics, Inc.Search in Eureka ↗
Plaintiff counselStephanie ScruggsAttorneyCounsel for Anova Applied Electronics, Inc.Search in Eureka ↗
Plaintiff counselTimothy J Billick , IAttorneyCounsel for Anova Applied Electronics, Inc.Search in Eureka ↗
Plaintiff law firmASHBURG & PRINCE PLLCLaw FirmRepresenting Anova Applied Electronics, Inc.Search in Eureka ↗
Plaintiff law firmBRADLEY ARANT BOULT CUMMINGS (DC)Law FirmRepresenting Anova Applied Electronics, Inc.Search in Eureka ↗
Plaintiff law firmBRADLEY ARANT BOULT CUMMINGS LLP (AL)Law FirmRepresenting Anova Applied Electronics, Inc.Search in Eureka ↗
Plaintiff law firmPRACTUS LLP (SEA)Law FirmRepresenting Anova Applied Electronics, Inc.Search in Eureka ↗
Defendant counselAlexander EnglehartAttorneyCounsel for Shenzhen Jingtaitengda Technology Co., Ltd.Search in Eureka ↗
Defendant counselCarl J. MarquardtAttorneyCounsel for Shenzhen Jingtaitengda Technology Co., Ltd.Search in Eureka ↗
Defendant counselDandan PanAttorneyCounsel for Shenzhen Jingtaitengda Technology Co., Ltd.Search in Eureka ↗
Defendant counselDonald R. McPhailAttorneyCounsel for Shenzhen Jingtaitengda Technology Co., Ltd.Search in Eureka ↗
Defendant counselEric SchweibenzAttorneyCounsel for Shenzhen Jingtaitengda Technology Co., Ltd.Search in Eureka ↗
Defendant counselJohn T FettersAttorneyCounsel for Shenzhen Jingtaitengda Technology Co., Ltd.Search in Eureka ↗
Defendant counselTao LiuAttorneyCounsel for Shenzhen Jingtaitengda Technology Co., Ltd.Search in Eureka ↗
Defendant counselValerie A WalkerAttorneyCounsel for Shenzhen Jingtaitengda Technology Co., Ltd.Search in Eureka ↗
Defendant counselWei WangAttorneyCounsel for Shenzhen Jingtaitengda Technology Co., Ltd.Search in Eureka ↗
Defendant law firmGLACIER LAW LLP (NY)Law FirmRepresenting Shenzhen Jingtaitengda Technology Co., Ltd.Search in Eureka ↗
Defendant law firmLaw Office Of Carl J. Marquardt PLLCLaw FirmRepresenting Shenzhen Jingtaitengda Technology Co., Ltd.Search in Eureka ↗
Defendant law firmMerchant & Gould (VA)Law FirmRepresenting Shenzhen Jingtaitengda Technology Co., Ltd.Search in Eureka ↗
Defendant law firmSTOKES LAWRENCE PS (SEATTLE)Law FirmRepresenting Shenzhen Jingtaitengda Technology Co., Ltd.Search in Eureka ↗
Presiding judgeJudge James L. RobartJudgeWashington Western District CourtSearch in Eureka ↗
Official verdict

Official order — verbatim text

“Upon the stipulation of the parties filed at Dkt. # 90, the parties agree to entry of an order dismissing this case with prejudice and without costs or fees to either party. IT IS HEREBY ORDERED that this case is dismissed with prejudice and without costs or fees to either party. IT IS SO ORDERED.”
Source: PACER Docket, Case 2:23-cv-00845, Washington Western District Court

The order adopts the parties’ joint stipulation verbatim, dismissing with prejudice and expressly denying costs or fees to either side. The ‘with prejudice’ designation is legally significant: it operates as a final judgment on the merits for res judicata purposes, permanently barring Anova from re-asserting the same patent claims against these defendants on these accused products. The explicit no-costs provision, uncommon absent a specific contractual basis, suggests the parties negotiated the dismissal terms holistically. No merits ruling was issued, so the scope or validity of US10455967B2 was not adjudicated by the court.

PACER case 2:23-cv-00845 · Public docket record Explore in Eureka ↗
Patent at issue

US10455967B2 — Circulator Cooker Technology

Publication No.US10455967B2
Application No.US15/890439
Patent details
ProductCirculator cooker precision temperature control apparatus and methods
Cited in actionJune 6, 2023

US10455967B2 (application number US15/890,439) covers circulator cooker technology — the category of immersion circulator devices used for sous vide and precision temperature cooking. The patent protects specific apparatus and/or method claims relating to how circulator cookers operate, likely covering heating, flow circulation, or control system elements. As the subject of an infringement action in 2023, the patent was in active commercial life at the time of filing. The precise claim scope is not disclosed in the public litigation record, but the product category targeted — consumer and semi-professional circulator cookers — is a high-volume, globally competitive market.

For Anova, US10455967B2 represents a core IP asset in a segment where Chinese manufacturers have aggressively entered at lower price points, often through e-commerce channels. Asserting this patent against Shenzhen-based OEMs and Inkbird — a well-known branded accessories supplier — signals that Anova views the patent as commercially meaningful and worth the cost of cross-border litigation. Any company designing or importing circulator cooker products into the U.S. market should assess their exposure to this patent’s claims, particularly given the no-invalidity outcome of this case.

Patent data sourced from USPTO via PatSnap Eureka patent database Search patent records in Eureka ↗
Freedom to operate

Should you run an FTO against US10455967B2?

Any company developing, importing, or distributing circulator cooker products — including immersion circulators, precision cooking devices, or sous vide appliances — for the U.S. market faces potential exposure to US10455967B2. This case confirms the patent is actively enforced and survived litigation without being challenged to invalidity. Product teams and IP counsel at appliance brands, private-label operators, and e-commerce importers should assess whether their product architecture falls within the patent’s claim scope before entering or expanding in the U.S. market.

PatSnap Eureka’s FTO Search Agent can map the claim landscape of US10455967B2 against your product specifications, identify relevant prior art, flag similar patents in the Anova portfolio, and surface related enforcement activity. Rather than a manual claim chart review, Eureka automates the initial landscape pass — giving your IP team a structured starting point for clearance analysis and helping R&D teams identify design-around opportunities early in the development cycle.

PatSnap Eureka FTO Search

Run a freedom-to-operate analysis on US10455967B2 to assess your product’s exposure

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Related litigation

Similar Circulator Cooker & Kitchen Appliance Patent Cases in U.S. District Courts

Cases involving kitchen appliance and precision cooking device patents litigated in U.S. district courts, particularly W.D. Washington, with Chinese manufacturer defendants.

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Anova Applied Electronics, Inc. patent enforcement history, Washington Western case history, Anova Applied Electronics, Inc.’s full IP portfolio, and comparable case analysis
Anova prior patent suitsInkbird IP litigation historySous vide patent landscapeW.D. Wash. patent outcomes
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Strategic implications

What this case signals for the precision cooking appliance IP landscape

A contested 577-day fight followed by a bilateral walk-away reflects the high cost and strategic complexity of asserting U.S. patents against Chinese hardware manufacturers.

US10455967B2 is still active — and still a litigation asset for Anova

The with-prejudice dismissal only bars claims against these specific defendants. Anova retains full ownership of US10455967B2 and can assert it against other circulator cooker manufacturers, importers, or distributors. Competitors in the precision cooking segment should treat this patent as an active enforcement vector, not a resolved threat.

Multiple Chinese defendants signals Anova’s strategy targets the supply chain

Naming a Shenzhen manufacturer, a branded reseller (Inkbird Tech), and a third entity in the same action suggests Anova is targeting the full distribution chain — from OEM to market-facing brand. This approach maximises settlement leverage but also increases litigation cost and complexity for the plaintiff.

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Full strategic analysis in PatSnap Eureka
Unlock 2 further insights on kitchen appliance patent enforcement strategy in W.D. Washington district court.
Settlement trigger analysisClaim scope of US10455967B2Comparable enforcement outcomes
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Frequently asked questions

Anova v Shenzhen — key questions answered

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Monitor circulator cooker patent enforcement before your next product launch

US10455967B2 remains an active asset after this case closed. Use PatSnap Eureka to run an FTO analysis, track new assertion activity across the precision cooking patent landscape, and benchmark competitor IP strategies.

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