Encryptawave Technologies v. Nintendo: WPA2 Encryption Suit Voluntarily Dismissed
Encryptawave Technologies LLC filed suit against Nintendo Co., Ltd. in the Eastern District of Texas, asserting US7233664B2 — a patent covering WPA2-encrypted Wi-Fi device networks — against the Nintendo Switch product line. The case was voluntarily dismissed without prejudice after just 113 days, before Nintendo filed any answer or summary judgment motion.
WPA2 encryption patent asserted against Nintendo Switch, then dropped early
On March 31, 2025, Encryptawave Technologies LLC filed a patent infringement action against Nintendo Co., Ltd. in the U.S. District Court for the Eastern District of Texas (Case No. 4:25-cv-00330), presided over by Judge Sean D. Jordan. The suit alleged that Nintendo’s Switch, Switch Lite, and Switch OLED consoles infringe US7233664B2, a patent covering wireless communication network nodes operating within WPA2-encrypted Wi-Fi device networks.
On July 22, 2025 — 113 days after filing — Encryptawave filed a Notice of Voluntary Dismissal Without Prejudice pursuant to Federal Rule of Civil Procedure 41(a)(1). The mechanism was available because Nintendo had not yet served an answer or a motion for summary judgment. The dismissal carried no merits adjudication and stipulated that each party would bear its own attorneys’ fees, costs, and expenses.
The early exit, before any substantive court ruling, is consistent with patterns seen when licensing negotiations advance or when a plaintiff reassesses claim strength prior to claim construction. The public record does not disclose whether a settlement or license agreement was reached. Because the dismissal is without prejudice, Encryptawave retains the right to refile the same claims against Nintendo — subject to applicable statutes of limitations.
Filing to Voluntary dismissal in 113 days
113 days — resolved before defendant answer; well below median E.D. Texas patent trial duration
Voluntarily dismissed: what the Rule 41(a)(1) exit means for both parties
Rule 41(a)(1): dismissal as of right, no court order needed
Under FRCP 41(a)(1), a plaintiff may dismiss an action without a court order by filing a notice before the defendant serves an answer or a motion for summary judgment. Encryptawave invoked this right before Nintendo reached either threshold, making the dismissal procedurally automatic. No judicial ruling on the merits was issued at any point.
No merits adjudicationDismissal without prejudice leaves the door open to refile
A dismissal without prejudice does not bar Encryptawave from reasserting US7233664B2 against Nintendo in a future action, provided the statute of limitations has not run. This is distinct from a dismissal with prejudice, which would extinguish the claims permanently. The public record is silent on whether a license or settlement accompanied this exit — either outcome is consistent with the filing.
Refiling remains possibleNintendo exits with no adverse finding and no fee award
Nintendo is released from the immediate action without any finding of infringement, invalidity, or damages. The stipulation that each party bears its own costs means Nintendo incurred no fee-shifting exposure. However, because the dismissal is without prejudice, Nintendo’s WPA2-related products remain potentially exposed to a refiled action until the underlying patent expires or is invalidated.
No liability findingWPA2 encryption patent risk persists for consumer electronics makers
US7233664B2 covers WPA2 wireless network node functionality — a feature ubiquitous across Wi-Fi-enabled consumer electronics. The case’s quick exit without a validity or infringement ruling means the patent’s enforceability is untested in court. Other device manufacturers in the gaming, IoT, and consumer electronics space should treat this patent as an unresolved enforcement risk until it expires or receives an IPR challenge.
Unresolved patent riskFull party and counsel information
| Role | Name | Type | Detail |
|---|---|---|---|
| Plaintiff | Encryptawave Technologies, LLC | Company | Wireless encryption patent licensing entity — holder of US7233664B2Search in Eureka ↗ |
| Defendant | Nintendo Co., Ltd. | Company | Nintendo Co., Ltd. — global video game hardware and software manufacturerSearch in Eureka ↗ |
| Plaintiff counsel | David R. Bennett | Attorney | Counsel for Encryptawave Technologies, LLCSearch in Eureka ↗ |
| Plaintiff counsel | Steven Kalberg | Attorney | Counsel for Encryptawave Technologies, LLCSearch in Eureka ↗ |
| Presiding judge | Judge Sean D. Jordan | Judge | Texas Eastern District CourtSearch in Eureka ↗ |
Official order — verbatim text
The dismissal notice explicitly invokes FRCP 41(a)(1) and states the action is dismissed ‘without prejudice,’ with each party bearing its own fees and costs. This phrasing confirms no merits ruling was entered and no fee-shifting occurred. The without-prejudice qualifier is legally significant: it preserves Encryptawave’s right to reassert the same patent claims against Nintendo’s Switch products in a subsequent action, meaning Nintendo has obtained only temporary relief from this specific proceeding.
US7233664B2 — WPA2 wireless network node encryption
US7233664B2 was filed under application number US10/448989 and covers wireless communication network nodes operating within WPA2-encrypted Wi-Fi environments. WPA2 (Wi-Fi Protected Access 2) is the security certification standard based on IEEE 802.11i, providing AES-based encryption for wireless networks. The patent’s application date places it at the early commercialisation phase of WPA2, suggesting potential foundational claim coverage over the core protocol implementation in networked devices.
The strategic value of this patent lies in its potential breadth: WPA2 is the dominant Wi-Fi security standard embedded in virtually every consumer Wi-Fi device manufactured in the last two decades — gaming consoles, smartphones, laptops, routers, and IoT devices. Assertion against Nintendo’s Switch family suggests the patent holder views embedded wireless networking functionality in gaming hardware as within claim scope. Any company shipping WPA2-enabled devices should evaluate their exposure to this patent’s remaining term and claim construction.
Should you run an FTO search against US7233664B2?
Any R&D team or product legal function responsible for Wi-Fi-enabled consumer electronics, gaming hardware, or IoT devices should assess US7233664B2. The patent’s assertion against Nintendo’s Switch — a mainstream consumer product with standard WPA2 networking — signals that the holder may interpret its claims broadly. Without a court claim construction on record, the scope of ‘wireless communication network nodes’ in the context of WPA2 remains undefined by judicial authority.
PatSnap Eureka’s FTO Search Agent can map US7233664B2’s independent claims against your product’s wireless stack, identify design-around opportunities, and surface prior art relevant to an IPR petition. Given that this case closed without a validity determination, a proactive FTO and IPR readiness assessment is the most defensible posture for device manufacturers operating in the WPA2 ecosystem.
Run a freedom-to-operate analysis on US7233664B2 to assess your product’s exposure
Run FTO in Eureka →Similar WPA2 and wireless encryption patent cases in E.D. Texas
Browse related wireless encryption and Wi-Fi standard patent infringement actions filed in the Eastern District of Texas, including comparable Rule 41 dismissal patterns.
What this case signals for the wireless encryption IP landscape
An early Rule 41 exit in E.D. Texas before any defense filing often signals leverage dynamics at play — for licensing or reassessment.
Pre-answer dismissals in E.D. Texas frequently precede licensing outcomes
When a plaintiff voluntarily dismisses under Rule 41(a)(1) before the defendant answers, the most common drivers are a negotiated license, a covenants-not-to-sue arrangement, or a strategic decision to refile in a more favorable venue. The absence of any public settlement record means IP teams tracking Encryptawave should monitor for refiling activity.
WPA2 encryption patents remain an active enforcement vector across consumer electronics
US7233664B2’s coverage of WPA2 wireless network nodes could apply broadly to any Wi-Fi device — gaming consoles, smart TVs, routers, and IoT hardware. Companies shipping WPA2-enabled products should assess this patent’s remaining life and claim scope, particularly given the absence of any court-ordered invalidity ruling in this case.
Encryptawave v Nintendo — key questions answered
Encryptawave Technologies LLC filed a patent infringement suit against Nintendo Co., Ltd. in the Eastern District of Texas on March 31, 2025, asserting US7233664B2 over Nintendo’s Switch, Switch Lite, and Switch OLED products. The case was voluntarily dismissed without prejudice on July 22, 2025, before Nintendo filed an answer, with each party bearing its own costs.
A without-prejudice dismissal means the case ended with no finding of infringement, validity, or damages. Nintendo faces no liability from this action, but Encryptawave retains the right to refile the same claims. Nintendo’s Switch products remain potentially exposed to a future assertion of US7233664B2 until the patent expires or is invalidated through inter partes review or other proceedings.
US7233664B2 covers wireless communication network nodes operating within WPA2-encrypted Wi-Fi device networks. It was asserted against the Nintendo Switch, Switch Lite, and Switch OLED because those consoles include WPA2 Wi-Fi connectivity. The patent’s application traces to 2003, placing it at the formative period of WPA2 standardisation, which may inform its claim scope relative to modern device implementations.
Yes. Under FRCP 41(a)(1), a dismissal without prejudice preserves the plaintiff’s right to bring the same claims again, subject to the applicable statute of limitations. However, if Encryptawave were to file a second dismissal of the same claims, that second dismissal would operate as an adjudication on the merits under the ‘two-dismissal rule’ of FRCP 41(a)(1)(B).
The dismissal occurred before Nintendo served an answer or summary judgment motion, meaning Encryptawave was entitled to dismiss as of right without court approval. This timing is consistent with licensing negotiations concluding, a decision to refile with amended claims, or a strategic pivot to a different venue or defendant. The public record does not confirm any of these explanations, and the absence of a settlement disclosure leaves the precise driver unknown.
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