DeFries v. MSB Trade Inc: Default Judgment on Double-Ended Hand Tool Patents
Independent inventor Kellie DeFries sued MSB Trade Inc in the Eastern District of Texas for selling competing double-ended hand tools on Amazon, asserting four patents covering utility and ornamental aspects. The court entered final default judgment — ordering a royalty of $1,000 per quarter or 5% of gross proceeds, whichever is higher — after the defendant failed to appear.
Amazon Seller Defaults as Hand Tool Inventor Wins Royalty Order
On 8 March 2022, Kellie DeFries filed suit against MSB Trade Inc in the Eastern District of Texas, alleging infringement of four patents — US10308005B2, US10967625B2, USD867838S, and USD867839S — through the sale of double-ended hand tools under specific Amazon ASINs. The case was presided over by Judge Barbara M. G. Lynn. A fifth patent, US10675852B2, was also identified among the patents involved, though the default judgment specifically adjudicates claims under four of the asserted patents.
MSB Trade Inc failed to appear or respond, and on 2 August 2024 the court entered final default judgment in DeFries’s favour. The judgment finds infringement of claims 1, 9–11 of US10308005, claim 1 of US10967625, claim 1 of USD867838, and claim 1 of USD867839. Rather than a lump-sum damages award, the court imposed a running royalty structure: $1,000 per quarter or 5% of gross proceeds per quarter, whichever is higher, with no obligation arising in months where no infringing sales occur.
The 878-day duration is notable for a default proceeding, suggesting the court required substantial process — likely including proper service and ASIN identification — before entering judgment. The royalty-forward structure, rather than a historical damages figure, is commercially significant: it creates a continuing compliance obligation tied to Amazon listing activity. The public record does not disclose the volume of infringing sales or whether any accused ASINs remained active at judgment.
Filing to Default Judgment in 878 days
878 days from filing to close — longer than median district court resolution for default judgments, suggesting multi-ASIN complexity
Default judgment entered: what the ruling means for both parties
Default judgment — defendant’s failure to appear triggers court order
When a defendant fails to plead or otherwise defend, the plaintiff may move for default judgment under Fed. R. Civ. P. 55. Here, the court found ‘no just reason for delay’ and directed entry of final default judgment. This constitutes a full judicial finding of infringement on the merits of the complaint’s well-pleaded allegations — not a settlement or consent agreement.
Rule 55 Default JudgmentDeFries secures enforceable royalty and post-judgment interest
DeFries obtains a court-ordered royalty stream — $1,000/quarter or 5% of gross proceeds, whichever is higher — directly tied to MSB’s Amazon ASIN activity. Post-judgment interest accrues under 28 U.S.C. § 1961(a). The court retains jurisdiction to enforce compliance. This structure gives DeFries ongoing leverage without requiring a separate damages trial.
Ongoing royalty + enforcement retainedMSB Trade bound by royalty obligation on all accused ASINs
MSB Trade Inc faces a binding royalty obligation on any continued sales under the accused ASINs. By failing to appear, the defendant forfeited any opportunity to contest infringement, challenge patent validity, or negotiate terms. To continue selling, MSB must pay the court-ordered royalty; to avoid payment, it must cease all sales under those ASINs. Default judgments of this kind are extremely difficult to vacate absent compelling procedural grounds.
Binding royalty or exit requiredAmazon sellers face escalating IP risk from default exposure
This case is consistent with a broader pattern of patent holders targeting Amazon marketplace sellers — particularly smaller sellers — through litigation in favourable venues. The per-ASIN royalty mechanism creates a scalable enforcement tool. Sellers operating across multiple ASINs in the hand tool category should treat this judgment as a signal to conduct FTO analysis before listing competing products.
Amazon seller IP riskFull party and counsel information
| Role | Name | Type | Detail |
|---|---|---|---|
| Plaintiff | Kellie DeFries | Individual | Independent inventor and patent holder — holder of US10308005, US10967625, USD867838, USD867839Search in Eureka ↗ |
| Defendant | MSB Trade Inc | Company | MSB Trade Inc — Amazon marketplace seller of double-ended hand tools; failed to appearSearch in Eureka ↗ |
| Plaintiff counsel | Brandon James Leavitt | Attorney | Counsel for Kellie DeFriesSearch in Eureka ↗ |
| Plaintiff counsel | Omar F Darwich | Attorney | Counsel for Kellie DeFriesSearch in Eureka ↗ |
| Plaintiff law firm | The Darwich Law Firm LLC | Law Firm | Representing Kellie DeFriesSearch in Eureka ↗ |
| Presiding judge | Judge Barbara M. G. Lynn | Judge | Texas Eastern District CourtSearch in Eureka ↗ |
Official order — verbatim text
The default judgment is explicit in its infringement findings — naming specific claims of each asserted patent and linking them to identified Amazon ASINs. The royalty formula ($1,000/quarter or 5% of gross proceeds, whichever is higher) is structured to ensure a minimum payment threshold regardless of sales volume, while scaling proportionally with revenue. The court’s retention of jurisdiction signals an intent to actively supervise compliance, giving DeFries meaningful post-judgment enforcement tools without requiring a new action for contempt or breach.
US10308005, US10967625, USD867838, USD867839 — Double-Ended Hand Tool Patents
The four adjudicated patents span both utility and design protection for double-ended hand tools. US10308005B2 (application US14/641208) and US10967625B2 (application US16/860790) protect functional aspects of the dual-end implement design, with claims covering structural configurations and methods of use. USD867838S and USD867839S (applications US29/657825 and US29/657826) protect the ornamental appearance of the tool, providing design patent coverage that complements the utility claims. A fifth patent, US10675852B2, is part of the broader portfolio but was not the subject of the default judgment’s specific infringement findings.
The combination of utility and design patent protection around a single product category creates a substantial enforcement perimeter. Competitors seeking to design around the utility claims must still contend with the ornamental design patents, and vice versa. For Amazon sellers in the hand tool space, this portfolio signals that DeFries has pursued a deliberate layered IP strategy — not a single opportunistic filing. Companies developing or sourcing double-ended hand tools for online marketplace distribution should treat this patent family as a material FTO concern.
Should you run an FTO against US10308005, US10967625, USD867838, and USD867839?
Any company developing, importing, or listing double-ended hand tools on Amazon or similar marketplaces should treat this patent family as an active FTO priority. The default judgment establishes that at least one commercial seller has already been found to infringe specific claims across all four patents. Product teams sourcing dual-function hand tools — particularly those with overlapping ornamental and functional design elements — face compounded risk from both the utility and design layers of this portfolio.
PatSnap Eureka’s FTO Search Agent can map the claim scope of US10308005, US10967625, USD867838, and USD867839 against your product specifications, identify prior art that may limit enforceability, and surface related patents in the DeFries portfolio. Eureka also enables ongoing monitoring of Amazon-focused patent enforcement actions in the hand tool category, so your IP and product teams receive early warning of emerging litigation risk before a complaint is filed.
Run a freedom-to-operate analysis on USD0867839S to assess your product’s exposure
Run FTO in Eureka →Similar Patent Cases: Hand Tool and Amazon Marketplace Enforcement
Cases involving hand tool utility and design patent enforcement against Amazon marketplace sellers in U.S. district courts, including the Eastern District of Texas.
What this case signals for the hand tool and Amazon marketplace IP landscape
This default judgment illustrates how patent holders can use district court litigation to establish enforceable royalty obligations against non-appearing Amazon sellers.
Default judgments create durable royalty obligations — not just one-off damages
The court’s royalty-forward structure — $1,000/quarter or 5% of gross proceeds — means the judgment is not a closed chapter. MSB Trade faces an ongoing financial and compliance obligation for as long as it lists under the accused ASINs. Patent holders in this space should note that this structure may be more commercially effective than a lump-sum award against a seller of uncertain means.
Amazon marketplace sellers are uniquely exposed to ASIN-level patent enforcement
The judgment is explicitly structured around Amazon ASINs, making enforcement highly traceable. Patent holders can monitor listing activity directly. Sellers should conduct FTO searches on all hand tool and dual-function implement listings before launch — especially where the design and utility of the product overlap with patented configurations.
DeFries v MSB — key questions answered
DeFries asserted four patents adjudicated in the default judgment: US10308005B2 and US10967625B2 (utility patents covering double-ended hand tool configurations) and USD867838S and USD867839S (design patents covering the ornamental appearance of the tool). A fifth patent, US10675852B2, is part of the portfolio but was not the subject of specific infringement findings in the judgment.
The court ordered MSB Trade Inc to pay DeFries a royalty of $1,000 per quarter or 5% of gross proceeds per quarter, whichever is higher, for any continued sales under the accused Amazon ASINs. No royalty obligation arises in any month where no infringing sales occur. Post-judgment interest also accrues under 28 U.S.C. § 1961(a).
MSB Trade Inc can continue selling under the accused ASINs but must pay the court-ordered royalty. To avoid payment, it must cease all sales under those ASINs. Default judgments are extremely difficult to vacate — MSB would need to demonstrate a compelling procedural ground such as lack of proper service. The court retains jurisdiction to enforce compliance.
The public record does not specify the precise cause of the 878-day duration, which is longer than typical for default proceedings. Possible factors include the time required to properly serve the defendant, identify and document all accused Amazon ASINs, and satisfy the court’s procedural requirements before entering a final default judgment. These complexities are consistent with multi-ASIN marketplace enforcement actions.
Asserting both utility patents (covering functional aspects) and design patents (covering ornamental appearance) creates a layered enforcement perimeter. A defendant cannot easily design around one patent type without potentially infringing the other. This stacking strategy, visible in DeFries’s four-patent assertion, makes it substantially harder for competing sellers to offer a non-infringing alternative and signals a deliberate, comprehensive IP enforcement approach.
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