Shenzhen Jianyuan v. Hyper Ice: Six Amazon Massage Gun Cases Consolidated
Shenzhen Jianyuan Electronic Technology filed a declaratory judgment action against Hyper Ice Inc in Washington’s Western District, seeking non-infringement and invalidity rulings over US Patent 12,213,933 covering massage gun technology sold on Amazon. The case was resolved by consolidation with five related actions in just 33 days, suggesting a coordinated defensive response by multiple Amazon sellers facing the same infringement allegations.
Filing to Case Dismissed in 33 days
33 days — resolved significantly faster than the median U.S. district court patent case
Case consolidated: what the Rule 42(a) order means for both parties
Rule 42(a) consolidation — not a merits ruling
The court invoked Federal Rule of Civil Procedure 42(a) to merge all six related declaratory judgment actions into a single proceeding. Consolidation is a judicial economy tool — it does not resolve infringement, validity, or any substantive patent question. The underlying dispute over US Patent 12,213,933 remains fully live and will be adjudicated in the consolidated proceeding.
Procedural — no merits decidedCoordinated DJ strategy now unified — strength in numbers
For Shenzhen Jianyuan and the other five plaintiff-sellers, consolidation is a tactically favourable development. Sharing litigation costs, discovery, and legal arguments across six defendants strengthens their collective position against Hyper Ice. A single invalidity finding would benefit all six simultaneously, and consolidated proceedings typically reduce the risk of inconsistent rulings.
Collective defence strengthenedHyper Ice faces a unified front across all six Amazon sellers
Hyper Ice, as the patent holder whose infringement allegations prompted the DJ actions, must now litigate against all six Amazon sellers in a single consolidated proceeding. This concentrates opposition and means a single adverse claim construction or invalidity ruling would extinguish its enforcement position against all plaintiffs simultaneously — materially raising its litigation risk.
Enforcement risk concentratedAmazon seller DJ filings signal an organised IP defence playbook
Six independent Amazon sellers filing coordinated declaratory judgment actions against the same patent is consistent with an emerging defensive pattern in consumer electronics IP disputes. It signals that marketplace sellers are increasingly willing to litigate proactively rather than accept licensing demands. The outcome of the consolidated case could set a precedent affecting massage gun and percussion therapy device sellers broadly.
Amazon IP enforcement trendFull party and counsel information
| Role | Name | Type | Detail |
|---|---|---|---|
| Plaintiff | Shenzhen Jianyuan Electronic Technology Co Ltd | Company | Search in Eureka ↗ |
| Defendant | Hyper Ice Inc | Company | Search in Eureka ↗ |
| Plaintiff counsel | Ruoting Men | Attorney | Counsel for Shenzhen Jianyuan Electronic Technology Co LtdSearch in Eureka ↗ |
| Plaintiff law firm | GLACIER LAW LLP | Law Firm | Representing Shenzhen Jianyuan 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 consolidation order under Rule 42(a) is purely procedural — it identifies a common question of law and fact (infringement and validity of the ‘933 Patent) across all six actions and merges them for efficiency. Critically, it does not resolve any substantive patent issue. The court’s observation that ‘all six cases are declaratory judgment actions involving the same U.S. Patent No. 12,213,933’ confirms that the consolidated dispute centres entirely on a single patent’s validity and scope against Amazon-sold massage gun products.
US12213933B1 — Percussion Therapy Massage Gun Device Technology
US Patent No. 12,213,933 (application number US18/760576) covers technology in the percussion therapy device space — specifically directed at massage gun products sold in the consumer health and recovery market. The patent is held by Hyper Ice Inc, a recognised brand in athletic recovery equipment. The B1 designation indicates this issued without a prior publication, suggesting a relatively expedited prosecution path. Its application date and issuance place it squarely in the rapidly commercialising handheld percussive therapy segment.
The ‘933 Patent carries significant commercial weight: six separate Amazon sellers filed declaratory judgment actions against it simultaneously, indicating it is being actively asserted as a marketplace enforcement tool. For competitors in the percussion therapy and consumer recovery device space, this patent represents a live infringement risk. Its claim scope — as yet to be construed by the court — will determine whether mass-market massage gun designs sold through Amazon fall within its reach.
Should you run an FTO analysis against US12213933B1?
Any company designing, manufacturing, importing, or selling massage guns or handheld percussion therapy devices — particularly through Amazon — should treat US12213933B1 as a priority FTO target. Hyper Ice has already alleged infringement against at least six distinct Amazon ASINs. If your product sits in this category and you have not assessed claim coverage, you are operating with unquantified exposure in an actively enforced patent landscape.
PatSnap Eureka’s FTO Search Agent allows R&D and product teams to map the claim language of US12213933B1 against your specific device architecture and identify design-around opportunities before a demand letter arrives. With the consolidated case likely to produce a claim construction order, monitoring that docket through Eureka’s litigation tracker will give you early warning of how broadly the court interprets the patent’s scope.
Run a freedom-to-operate analysis on US12213933B1 to assess your product’s exposure
Run FTO in Eureka →Related percussion therapy device patent cases in U.S. district courts
Explore comparable declaratory judgment actions and infringement disputes involving percussion therapy and massage gun patents litigated in U.S. district courts.
What this case signals for the percussion therapy device IP landscape
Six simultaneous DJ filings against a single patent suggests the consumer health device space is entering a more adversarial IP enforcement phase.
Coordinated DJ actions are reshaping Amazon seller IP defence
The simultaneous filing of six declaratory judgment actions targeting US12213933B1 suggests organised legal coordination among Amazon marketplace sellers. Patent holders targeting multiple small sellers should anticipate consolidated proceedings, shared invalidity arguments, and diluted enforcement leverage — not individual capitulations.
US12213933B1 is now under active validity challenge in federal court
Any company selling or developing massage gun or percussion therapy products should monitor the consolidated proceeding. An invalidity ruling would clear the patent from the field entirely. A plaintiff win would confirm enforceability and likely trigger broader licensing demands across Amazon’s marketplace.
Shenzhen v Hyper — key questions answered
The case was not decided on the merits. After 33 days, the court granted a joint motion to consolidate this action with five other related declaratory judgment cases involving the same patent, US12213933B1. The substantive dispute over infringement and validity of that patent continues in the consolidated proceeding.
US12213933B1, assigned to Hyper Ice Inc, covers technology in the percussion therapy massage gun space. It is being enforced against multiple Amazon sellers whose handheld massage gun products Hyper Ice alleges infringe the patent. Six of those sellers responded by filing declaratory judgment actions seeking rulings of non-infringement and invalidity.
A declaratory judgment (DJ) action allows a party facing infringement allegations — but not yet sued — to proactively file in federal court seeking a ruling that they do not infringe a patent or that the patent is invalid. Here, Amazon sellers received infringement allegations from Hyper Ice and responded by filing DJ actions rather than waiting to be sued.
Under Federal Rule of Civil Procedure 42(a), a court can merge actions that share common questions of law or fact to promote judicial economy. All six cases involve the same patent and the same core legal questions. Consolidation means the cases proceed together, sharing discovery and briefing — but it does not resolve any infringement or validity question.
Plaintiff Shenzhen Jianyuan Electronic Technology Co Ltd, a Chinese electronics manufacturer, is represented by Ruoting Men of Glacier Law LLP. Defendant Hyper Ice Inc is represented by Benjamin Herbert and John Poulos of Lewis Brisbois Bisgaard & Smith and Miller Barondess LLP. The case is before Judge Kymberly K. Evanson in the Western District of Washington.
PatSnap Eureka searches patents and litigation data to answer instantly.