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.
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.
Filing to Case Dismissed in 577 days
577 days — longer than the median W.D. Wash. patent case, suggesting substantive pre-trial engagement
Dismissed with prejudice by stipulation: what the order means for both parties
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 dismissalAnova 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 likelyDefendants 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 survivesIP 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 riskFull party and counsel information
| Role | Name | Type | Detail |
|---|---|---|---|
| Plaintiff | Anova Applied Electronics, Inc. | Company | Precision cooking appliance company — holder of US10455967B2Search in Eureka ↗ |
| Defendant | Shenzhen Jingtaitengda Technology Co., Ltd. | Company | Shenzhen Jingtaitengda Tech and affiliates Inkbird Tech CL and Yingbozhikong — Chinese circulator cooker manufacturers and distributorsSearch in Eureka ↗ |
| Co-Defendant | Inkbird Tech CL | Individual | Search in Eureka ↗ |
| Co-Defendant | Shenzhenshi Yingbozhikong Keji Youxian Gongsi | Individual | Search in Eureka ↗ |
| Plaintiff counsel | Ashley Robinson | Attorney | Counsel for Anova Applied Electronics, Inc.Search in Eureka ↗ |
| Plaintiff counsel | Jessica Zurlo | Attorney | Counsel for Anova Applied Electronics, Inc.Search in Eureka ↗ |
| Plaintiff counsel | Maryann Zaki | Attorney | Counsel for Anova Applied Electronics, Inc.Search in Eureka ↗ |
| Plaintiff counsel | Ray Ashburg | Attorney | Counsel for Anova Applied Electronics, Inc.Search in Eureka ↗ |
| Plaintiff counsel | Stephanie Scruggs | Attorney | Counsel for Anova Applied Electronics, Inc.Search in Eureka ↗ |
| Plaintiff counsel | Timothy J Billick , I | Attorney | Counsel for Anova Applied Electronics, Inc.Search in Eureka ↗ |
| Plaintiff law firm | ASHBURG & PRINCE PLLC | Law Firm | Representing Anova Applied Electronics, Inc.Search in Eureka ↗ |
| Plaintiff law firm | BRADLEY ARANT BOULT CUMMINGS (DC) | Law Firm | Representing Anova Applied Electronics, Inc.Search in Eureka ↗ |
| Plaintiff law firm | BRADLEY ARANT BOULT CUMMINGS LLP (AL) | Law Firm | Representing Anova Applied Electronics, Inc.Search in Eureka ↗ |
| Plaintiff law firm | PRACTUS LLP (SEA) | Law Firm | Representing Anova Applied Electronics, Inc.Search in Eureka ↗ |
| Defendant counsel | Alexander Englehart | Attorney | Counsel for Shenzhen Jingtaitengda Technology Co., Ltd.Search in Eureka ↗ |
| Defendant counsel | Carl J. Marquardt | Attorney | Counsel for Shenzhen Jingtaitengda Technology Co., Ltd.Search in Eureka ↗ |
| Defendant counsel | Dandan Pan | Attorney | Counsel for Shenzhen Jingtaitengda Technology Co., Ltd.Search in Eureka ↗ |
| Defendant counsel | Donald R. McPhail | Attorney | Counsel for Shenzhen Jingtaitengda Technology Co., Ltd.Search in Eureka ↗ |
| Defendant counsel | Eric Schweibenz | Attorney | Counsel for Shenzhen Jingtaitengda Technology Co., Ltd.Search in Eureka ↗ |
| Defendant counsel | John T Fetters | Attorney | Counsel for Shenzhen Jingtaitengda Technology Co., Ltd.Search in Eureka ↗ |
| Defendant counsel | Tao Liu | Attorney | Counsel for Shenzhen Jingtaitengda Technology Co., Ltd.Search in Eureka ↗ |
| Defendant counsel | Valerie A Walker | Attorney | Counsel for Shenzhen Jingtaitengda Technology Co., Ltd.Search in Eureka ↗ |
| Defendant counsel | Wei Wang | Attorney | Counsel for Shenzhen Jingtaitengda Technology Co., Ltd.Search in Eureka ↗ |
| Defendant law firm | GLACIER LAW LLP (NY) | Law Firm | Representing Shenzhen Jingtaitengda Technology Co., Ltd.Search in Eureka ↗ |
| Defendant law firm | Law Office Of Carl J. Marquardt PLLC | Law Firm | Representing Shenzhen Jingtaitengda Technology Co., Ltd.Search in Eureka ↗ |
| Defendant law firm | Merchant & Gould (VA) | Law Firm | Representing Shenzhen Jingtaitengda Technology Co., Ltd.Search in Eureka ↗ |
| Defendant law firm | STOKES LAWRENCE PS (SEATTLE) | Law Firm | Representing Shenzhen Jingtaitengda Technology Co., Ltd.Search in Eureka ↗ |
| Presiding judge | Judge James L. Robart | Judge | Washington Western District CourtSearch in Eureka ↗ |
Official order — verbatim text
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.
US10455967B2 — Circulator Cooker Technology
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.
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.
Run a freedom-to-operate analysis on US10455967B2 to assess your product’s exposure
Run FTO in Eureka →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.
Related patent case — similar technology
Comparable case in the same technology domain. Patent holder and defendant reached resolution after proceedings.
SettledRelated infringement action — same court
Comparable Circulator cooker-adjacent infringement action. Patent enforcement dynamics analysed in depth.
Active · District CourtRelated invalidity challenge — appellate outcome
Combined invalidity and infringement action in the same technology space. Decided after substantive proceedings.
DecidedAnova Applied Electronics, Inc.’s broader IP enforcement history
Anova Applied Electronics, Inc.’s full litigation history covering prior enforcement, licensing activity, and inter partes review proceedings.
Portfolio viewWhat 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.
No-costs order suggests neither party achieved a clear litigation win
When both sides agree to absorb their own fees, it typically signals a balanced negotiated outcome rather than a decisive victory. If Anova had obtained a strong infringement ruling or a compelling claim construction, it would likely have sought a fee award or damages. The symmetry of the no-costs term is consistent with a mutual compromise — potentially including design-around commitments or limited licence terms.
Defendants’ multi-firm defence strategy raised the cost of a merits victory
The defendants collectively retained four law firms — Merchant & Gould, Glacier Law, Stokes Lawrence, and Carl J. Marquardt’s office — spanning patent litigation, cross-border trade, and local Washington counsel. This level of resourcing suggests the defendants were prepared to litigate through claim construction and potentially trial, materially raising Anova’s cost-benefit calculus for pursuing a merits judgment.
Anova v Shenzhen — key questions answered
The case was dismissed with prejudice by stipulation of both parties on January 3, 2025, after 577 days of litigation. Judge James L. Robart entered the order pursuant to Dkt. #90, with no costs or fees awarded to either party. The specific terms of any private resolution are not disclosed in the public record.
Anova asserted US10455967B2 (application no. US15/890,439), a patent covering circulator cooker technology. The accused products were described as circulator cookers. The patent remains in force and was not adjudicated as invalid in this proceeding.
A dismissal with prejudice operates as a final judgment on the merits for res judicata purposes. Anova cannot refile the same patent infringement claims under US10455967B2 against Shenzhen Jingtaitengda, Inkbird Tech CL, or Yingbozhikong based on the same accused products. Anova retains the right to assert the patent against different defendants or different products.
Three defendants were named: Shenzhen Jingtaitengda Technology Co., Ltd. (a Shenzhen-based manufacturer), Inkbird Tech CL (a branded consumer electronics accessories supplier), and Shenzhenshi Yingbozhikong Keji Youxian Gongsi. All three are based in or associated with the Shenzhen hardware manufacturing ecosystem.
The public order does not confirm a settlement — it records only that both parties stipulated to dismissal with prejudice and that neither side receives costs or fees. However, a mutual no-costs, with-prejudice stipulation is typically consistent with a privately negotiated resolution, which may include licence terms, design commitments, or other commercial arrangements not visible in the court record.
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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