Nevada Court Grants Default Judgment & Permanent Injunction in Adjustable Dumbbell Patent Case

Case Overview

In a decisive outcome for fitness equipment IP protection, the United States District Court for the District of Nevada entered a default judgment and permanent injunction in favor of Swedish innovator Personality Gym AB against Chinese manufacturer Shandong Aochuang Fitness Equipment Co., Ltd. (Case No. 2:25-cv-00458). Closed on January 30, 2026, just 323 days after filing, the case centered on three U.S. patents covering round and octagonal adjustable dumbbell technology — a fast-growing product category that surged in commercial demand following the global home fitness boom.

The court’s order granted judgment on all counts of the complaint and imposed a broad permanent injunction barring the defendant from making, using, selling, offering to sell, or importing infringing products into the United States. For patent attorneys, IP professionals, and R&D teams operating in the fitness equipment and consumer goods sectors, this case offers critical lessons about enforcing patents against foreign manufacturers, the procedural power of default judgments, and the strategic value of securing injunctive relief.

The Parties

The Patents at Issue

Three U.S. patents were asserted, covering fundamental adjustable dumbbell technology, specifically round and octagonal form factors. These patents relate to innovative configurations of adjustable dumbbells — covering mechanical adjustment mechanisms and structural design elements relevant to consumer fitness equipment. Patent numbers are searchable directly via the USPTO Patent Full-Text Database.

• • US 11,865,397 — Adjustable dumbbell technology
• • US 11,602,661 — Adjustable dumbbell technology
• • US 12,076,606 — Adjustable dumbbell technology

The Accused Products

The accused products are round and octagonal adjustable dumbbells. Adjustable dumbbells represent a high-margin, high-volume segment of the consumer fitness market, making IP enforcement in this category commercially significant. The defendant’s alleged importation and sale of infringing products into the U.S. market forms the core of the infringement action under 35 U.S.C. § 271.

Legal Representation

Personality Gym AB was represented by two law firms: **Panitch Schwarze Belisario & Nadel LLP** — a nationally recognized IP boutique — and **Saltzman Mugan Dushoff**, a Nevada-based litigation firm. Plaintiff attorneys of record included Dennis J. Butler, Elizabeth Friedman, Erin Dunston, Joel Z. Schwarz, and Philip L. Hirschhorn. No defense counsel entered an appearance on behalf of Shandong Aochuang.

The Verdict & Legal Analysis

Outcome

The court entered judgment **in favor of Personality Gym AB on all counts** of the complaint. The court simultaneously:

• • Denied as moot the Motion for Preliminary Injunction (ECF No. 11) — rendered unnecessary by the finality of default judgment
• • Granted the Motion for Default Judgment (ECF No. 20)
• • Imposed a permanent injunction against Shandong Aochuang, its officers, directors, agents, servants, employees, attorneys, and all persons in active concert or participation with the defendant

The permanent injunction specifically prohibits the defendant from: making, using, selling, offering to sell, and/or importing the infringing adjustable dumbbell products into the United States; inducing others to use the accused products in an infringing manner; and infringing the asserted patents in violation of 35 U.S.C. § 271. Specific damages amounts were not disclosed in the provided case record. Default judgments in patent cases may include damages to be determined separately; practitioners should consult PACER (Case No. 2:25-cv-00458, D. Nev.) for any subsequent damages orders.

Verdict Cause Analysis

The verdict arose from a classic default judgment scenario: the defendant failed to appear, respond to the complaint, or retain U.S. counsel. Under Federal Rule of Civil Procedure 55, a defendant’s failure to plead or otherwise defend an action entitles the plaintiff to seek default. Upon showing the adequacy of its patent claims and infringement allegations, Personality Gym AB secured the court’s entry of judgment across all asserted patents.

The preliminary injunction motion — often a high-stakes procedural battleground requiring showings of likelihood of success, irreparable harm, balance of equities, and public interest — became unnecessary once default judgment was pursued and granted. This sequencing reflects sound litigation strategy: pursuing injunctive relief early preserves options, while the default route accelerates resolution when defendants fail to engage.

Legal Significance

This case reinforces that permanent injunctive relief remains an accessible and powerful remedy in patent cases where defendants default, consistent with the framework established post-*eBay Inc. v. MercExchange, L.L.C.*, 547 U.S. 388 (2006). Courts retain discretion to issue permanent injunctions, and default scenarios — where no equitable defense is presented — typically weigh strongly in favor of the patent holder.

The breadth of the injunction — extending to officers, directors, agents, and persons in active concert — is standard but strategically significant for enforcement against entities that may attempt to restructure or redirect infringing operations.