Shenzhen Jiaxin v. Hyper Ice: Massage Gun Patent Dispute Consolidated Across Six Cases
Shenzhen Jiaxin Electronic Technology filed a declaratory judgment action against Hyper Ice Inc in the Western District of Washington, challenging US Patent 12,213,933 covering massage gun technology. Within 33 days, the court consolidated the case with five parallel DJ actions — all targeting the same patent, all involving Amazon-sold massage gun products.
Six Amazon Sellers, One Patent, One Consolidated Proceeding
Shenzhen Jiaxin Electronic Technology Co Ltd, a China-based consumer electronics manufacturer, filed this declaratory judgment action against Hyper Ice Inc on 15 August 2025 in the Western District of Washington before Judge Kymberly K. Evanson. The dispute centres on US Patent No. 12,213,933 — a patent Hyper Ice holds covering massage gun technology — and Shenzhen Jiaxin’s Amazon-listed product (ASIN B0BC1GS34Q). The plaintiff sought declarations of both non-infringement and invalidity, a dual challenge consistent with DJ practice in response to patent-holder enforcement letters or Amazon IP complaints.
The case was terminated on 17 September 2025 not on the merits but through consolidation. Acting on the parties’ own stipulation and joint motion, Judge Evanson invoked Federal Rule of Civil Procedure 42(a) to merge this action with five other related cases, all presenting the same legal and factual questions around the ‘933 Patent. The consolidation order was granted on the basis that all six cases involved Amazon-sold massage gun products accused of infringing the same patent, making joint resolution the most judicially efficient path forward.
The 33-day lifespan of this individual docket is notable primarily as a procedural milestone rather than a substantive outcome — no ruling on infringement or validity has been issued. The speed of the parties’ agreement to consolidate suggests coordinated legal strategy, likely among the plaintiffs’ shared counsel or through parallel representation arrangements. The public record does not disclose which consolidated case number now carries all six actions, nor what discovery or trial schedule has been set, leaving the ultimate IP stakes unresolved.
Filing to Case Dismissed in 33 days
33-day case lifecycle before consolidation order — exceptionally swift procedural resolution
Case consolidated under FRCP 42(a): what the order means for both parties
FRCP 42(a) consolidation: cases merged, not decided
Federal Rule of Civil Procedure 42(a) allows a court to consolidate actions sharing common questions of law or fact. Here, all six cases involve the same patent (US12213933B1), the same defendant (Hyper Ice), and the same factual posture: Amazon sellers seeking DJ relief against infringement allegations. Consolidation does not resolve the merits — it reorganises the proceedings for efficiency. The individual docket is closed; the substance moves to the lead consolidated case.
Procedural consolidationDJ plaintiffs gain collective strength but no ruling yet
For Shenzhen Jiaxin and the five co-plaintiffs, consolidation is tactically advantageous: shared discovery, aligned invalidity arguments, and cost-sharing across multiple Amazon sellers facing the same patent threat. A unified front against a single patent holder typically raises the stakes for the patent owner and can accelerate settlement discussions. However, no declaratory judgment of non-infringement or invalidity has been granted — the legal risk to each seller remains live.
Merits unresolvedHyper Ice faces six challengers in a single proceeding
Consolidation concentrates Hyper Ice’s litigation burden but also its opportunity: a single favourable ruling on infringement across all six defendants would validate the ‘933 Patent against the full Amazon seller cohort. Conversely, a single invalidity finding would extinguish enforcement leverage against all six simultaneously. Hyper Ice’s consent to consolidation — reflected in the joint stipulation — suggests it may view consolidated proceedings as manageable or strategically preferable.
Six-party exposureAmazon massage gun market faces a single determinative ruling
The consolidation of six parallel DJ actions around one massage gun patent signals a broader enforcement campaign by Hyper Ice targeting Amazon-channel sellers of percussive therapy devices. The outcome of the consolidated proceedings will likely set a market-wide precedent for whether competing massage gun products infringe the ‘933 Patent. Other Amazon sellers in the percussive therapy space — not yet named — should monitor the consolidated case closely as a bellwether for their own exposure.
Market-wide precedent riskFull party and counsel information
| Role | Name | Type | Detail |
|---|---|---|---|
| Plaintiff | Shenzhen Jiaxin Electronic Technology Co Ltd | Company | China-based consumer electronics manufacturer — holder of Amazon ASIN B0BC1GS34Q massage gun productSearch in Eureka ↗ |
| Defendant | Hyper Ice Inc | Company | Hyper Ice Inc — US-based percussive therapy device brand and holder of US Patent 12,213,933Search in Eureka ↗ |
| Plaintiff counsel | Ruoting Men | Attorney | Counsel for Shenzhen Jiaxin Electronic Technology Co LtdSearch in Eureka ↗ |
| Plaintiff law firm | GLACIER LAW LLP | Law Firm | Representing Shenzhen Jiaxin Electronic Technology Co LtdSearch in Eureka ↗ |
| Defendant counsel | Benjamin Herbert | Attorney | Counsel for Hyper Ice IncSearch in Eureka ↗ |
| Defendant counsel | John Poulos | Attorney | Counsel for Hyper Ice IncSearch in Eureka ↗ |
| Defendant law firm | LEWIS BRISBOIS BISGAARD & SMITH | Law Firm | Representing Hyper Ice IncSearch in Eureka ↗ |
| Defendant law firm | MILLER BARONDESS LLP | Law Firm | Representing Hyper Ice IncSearch in Eureka ↗ |
| Presiding judge | Judge Kymberly K. Evanson | Judge | Washington Western District CourtSearch in Eureka ↗ |
Official order — verbatim text
The court’s order is purely procedural: it grants consolidation under FRCP 42(a) on the basis of the parties’ own stipulation, making no finding on infringement or invalidity. The language — ‘consolidation will best serve judicial economy’ — is standard FRCP 42(a) reasoning and carries no substantive weight for either party on the merits. The verdict confirms only that all six cases share common legal and factual questions centred on US Patent No. 12,213,933 and Amazon-sold massage gun products. The underlying infringement and invalidity disputes remain entirely open in the consolidated proceeding.
US12213933B1 — Percussive Massage Gun Device Technology
US Patent No. 12,213,933 (application number US18/760576) is a relatively recent grant held by Hyper Ice Inc, covering technology embodied in percussive massage gun devices. As a B1 publication, the patent issued without a prior A1 publication, suggesting it proceeded through prosecution without publication delay — consistent with a fast-track or streamlined examination. The patent sits at the intersection of consumer wellness hardware and motor-driven mechanical therapy devices, a technology domain that has seen significant commercial growth and corresponding IP activity.
Hyper Ice is a recognised brand in the high-performance recovery and percussive therapy space, and the ‘933 Patent appears central to its enforcement strategy against Amazon-channel competitors. The fact that at least six separate sellers were targeted — each selling massage gun products on Amazon — suggests the patent’s claims are drafted broadly enough to read on a range of competing products or that Hyper Ice is pursuing an aggressive market-clearing enforcement campaign. For any manufacturer or importer of percussive therapy devices sold through e-commerce channels, the ‘933 Patent represents a live and actively enforced IP risk.
Should you run an FTO analysis against US Patent 12,213,933?
Any company manufacturing, importing, or selling percussive massage gun products through Amazon or other e-commerce platforms should treat US12213933B1 as a priority FTO target. Hyper Ice has demonstrated willingness to assert this patent aggressively — at least six Amazon sellers have been targeted, triggering parallel DJ actions in W.D. Washington. If your product uses a handheld motor-driven percussive therapy mechanism and is sold online in the US market, the risk profile is material and warrants formal clearance analysis before your next inventory cycle.
PatSnap Eureka’s FTO Search Agent can map the claim landscape of US12213933B1 against your specific product architecture, identify prosecution history estoppel that may limit claim reach, surface relevant prior art for invalidity arguments, and flag any continuation or divisional applications that could extend Hyper Ice’s patent family coverage. Given that the consolidated proceedings are ongoing, real-time patent monitoring through Eureka ensures you receive immediate alerts if Hyper Ice files related patents or if the consolidated case produces a claim construction order that shifts the infringement risk calculus.
Run a freedom-to-operate analysis on US12213933B1 to assess your product’s exposure
Run FTO in Eureka →Related Massage Gun Patent DJ Actions in W.D. Washington
Explore the five related declaratory judgment cases consolidated with this action in the Western District of Washington, all asserting non-infringement and invalidity of US Patent 12,213,933.
What this case signals for the percussive therapy device IP landscape
A six-plaintiff consolidation around one massage gun patent reveals how Amazon enforcement campaigns are reshaping competitive dynamics in the consumer wellness hardware market.
Amazon IP complaints are driving a wave of declaratory judgment actions
The pattern here — multiple Amazon sellers independently filing DJ actions against the same patent holder — is consistent with coordinated responses to Amazon’s IP complaint mechanism. When a patent holder files multiple ASIN takedown requests, affected sellers increasingly respond with proactive DJ litigation rather than waiting for infringement suits. IP teams at consumer electronics brands should treat Amazon enforcement activity as a litigation trigger.
Consolidation under FRCP 42(a) is a double-edged sword for patent holders
Hyper Ice consented to consolidation, which streamlines proceedings but also concentrates invalidity risk. A single PTAB or district court invalidity ruling in the consolidated action would eliminate the ‘933 Patent’s enforceability against all six defendants simultaneously. Patent holders in active enforcement campaigns should weigh whether consolidation serves their litigation posture before agreeing to joint motions.
Shenzhen v Hyper — key questions answered
The case was filed on 15 August 2025 as a declaratory judgment action by Shenzhen Jiaxin Electronic Technology Co Ltd against Hyper Ice Inc, challenging US Patent 12,213,933. After 33 days, Judge Kymberly K. Evanson consolidated it with five related cases under FRCP 42(a) based on a joint stipulation. No ruling on infringement or invalidity was issued — the merits proceed in the consolidated action.
US Patent No. 12,213,933 (application US18/760576) is a patent held by Hyper Ice Inc covering percussive massage gun device technology. Hyper Ice has used this patent to allege that multiple Amazon-channel sellers’ massage gun products constitute infringement, triggering at least six parallel declaratory judgment actions in the Western District of Washington. The patent is a B1 grant, meaning it issued without prior publication.
Under Federal Rule of Civil Procedure 42(a), courts may consolidate actions sharing common questions of law or fact. Here, all six cases involved the same patent, the same defendant, and the same posture — Amazon sellers seeking DJ relief. Consolidation, agreed by both sides via stipulation, means the cases proceed together. No merits ruling has been made; infringement and invalidity remain live issues in the consolidated proceeding.
Multiple parallel DJ filings by Amazon sellers against a single patent holder typically signal a coordinated response to patent-based ASIN takedown complaints on Amazon’s platform. It suggests Hyper Ice sent enforcement communications or filed Amazon IP complaints that prompted multiple sellers to seek proactive judicial protection. This pattern — seen increasingly in consumer electronics — consolidates invalidity risk for the patent holder and signals a potentially broad enforcement campaign.
Shenzhen Jiaxin was represented by attorney Ruoting Men of Glacier Law LLP, a firm that frequently represents Chinese manufacturers in US patent litigation. Hyper Ice was represented by Benjamin Herbert and John Poulos, with Lewis Brisbois Bisgaard & Smith and Miller Barondess LLP listed as defence counsel. The multi-firm defence structure suggests Hyper Ice is coordinating representation across the full set of consolidated DJ actions.
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