Modalmed Inc. v. John Doe: Eye Massager Patent Case Dismissed Without Prejudice
Modalmed Inc. filed a patent infringement action against an anonymous defendant in the Northern District of Illinois, asserting two patents covering headwear eye massager technology. The case closed without prejudice after just 53 days, leaving Modalmed’s enforcement options open.
Early voluntary exit signals strategic enforcement, not final resolution
On September 22, 2025, Modalmed Inc. — a headwear and wearable eye massager technology company — filed a patent infringement action in the U.S. District Court for the Northern District of Illinois before Judge Virginia M. Kendall. The complaint asserted two patents, US10684483B2 and US11372252B2, both covering headwear eye massager products, against a defendant identified only as John Doe.
The case was terminated on November 14, 2025, after just 53 days. Dismissal was effectuated via a Notice of Dismissal filed pursuant to Federal Rule of Civil Procedure 41(a)(1)(A)(i), the mechanism that allows a plaintiff to voluntarily dismiss an action without a court order before the defendant serves an answer or a motion for summary judgment. The court recorded the basis of termination as ‘dismissed without prejudice,’ meaning Modalmed retains the right to refile claims against this or any related defendant.
The brevity of the dispute — 53 days from filing to closure — and the use of a John Doe defendant structure are consistent with a targeted enforcement strategy, potentially aimed at identifying and pressuring an unknown online seller before formal service was completed. The public record does not disclose whether a settlement was reached, whether the defendant’s identity was established, or whether Modalmed intends to refile. These remain open questions for market observers.
Filing to Dismissed without Prejudice in 53 days
53 days — notably short; median patent cases run 2–3 years
Dismissed without prejudice: what the Rule 41 exit means for both parties
Rule 41(a)(1)(A)(i): plaintiff’s unilateral right to withdraw
Federal Rule of Civil Procedure 41(a)(1)(A)(i) permits a plaintiff to dismiss an action without a court order by filing a notice of dismissal before the opposing party serves an answer or motion for summary judgment. No judicial approval is required. Because the defendant here appears not to have filed a responsive pleading, Modalmed could exit cleanly. The dismissal is without prejudice, meaning the claims are not extinguished.
Voluntary, no court approval neededWithout prejudice: the claims survive for potential refiling
A dismissal without prejudice does not adjudicate the merits of the patent claims. Modalmed is not barred from filing a new action on the same patents against the same or related defendants. This contrasts with a dismissal with prejudice, which would permanently extinguish the claims. The public record here confirms the without-prejudice designation, preserving Modalmed’s enforcement flexibility.
Refiling rights preservedJohn Doe: no merits ruling, but exposure remains live
Because the dismissal is without prejudice, the unnamed defendant faces no final judgment and no injunction. However, no license or covenant not to sue is apparent from the public record. If the defendant continues to sell the accused eye massager products, Modalmed could refile, potentially naming a now-identified defendant. The absence of a responsive pleading suggests the defendant may never have been formally served.
No final judgment; risk persistsJohn Doe enforcement: a common tactic against marketplace sellers
Filing against John Doe defendants is a recognised strategy targeting anonymous e-commerce or marketplace sellers of competing wearable health devices. The 53-day lifecycle is consistent with using litigation to obtain discovery identifying unknown infringers, or to prompt removal of infringing listings. Competitors and distributors in the headwear eye massager segment should treat Modalmed’s two asserted patents as actively enforced.
Active enforcement signalFull party and counsel information
| Role | Name | Type | Detail |
|---|---|---|---|
| Plaintiff | Modalmed Inc. | Company | Wearable eye massager technology company — holder of US10684483B2Search in Eureka ↗ |
| Defendant | John Doe | Individual | John Doe — unidentified defendant, potentially an anonymous online sellerSearch in Eureka ↗ |
| Plaintiff counsel | Allen Justin Poplin | Attorney | Counsel for Modalmed Inc.Search in Eureka ↗ |
| Plaintiff counsel | Joseph Paul Hooper | Attorney | Counsel for Modalmed Inc.Search in Eureka ↗ |
| Plaintiff counsel | Wangxue Deng | Attorney | Counsel for Modalmed Inc.Search in Eureka ↗ |
| Plaintiff law firm | Avek IP LLC | Law Firm | Representing Modalmed Inc.Search in Eureka ↗ |
| Presiding judge | Judge Virginia M. Kendall | Judge | Illinois Northern District CourtSearch in Eureka ↗ |
Official order — verbatim text
The court’s termination order records a Rule 41(a)(1)(A)(i) voluntary dismissal without prejudice, effectuated by plaintiff’s Notice of Dismissal [37]. This is a purely procedural exit — no claim construction, no infringement or validity findings were made. The phrasing ‘remaining Defendant’ suggests Modalmed may have resolved claims against at least one other party earlier in the proceeding, though the public docket does not confirm the terms of any such resolution.
US10684483B2 & US11372252B2 — Headwear Eye Massager Technology
US10684483B2 (application US16/035097) and US11372252B2 (application US16/902217) both sit within the wearable eye massager technology space — a growing segment of consumer health electronics that combines air pressure, vibration, heat, and light therapy in a headwear form factor. The two patents share a related application history, suggesting a prosecution strategy designed to build layered coverage across device configurations and methods of use.
The eye massager category has seen rapid expansion among Asian-origin brands distributing through global e-commerce channels, making IP enforcement increasingly important for established developers. Modalmed’s dual-patent position, covering both device structure and likely method claims, creates a broader enforcement perimeter than a single patent would. Competitors developing or importing headwear eye care products — particularly those incorporating air bag massage, vibration motors, or thermal elements — face meaningful freedom-to-operate exposure from this patent family.
Should you run an FTO against US10684483B2 and US11372252B2?
Any company designing, manufacturing, or distributing headwear eye massager products — including OEM suppliers, private-label importers, and online marketplace sellers — should conduct a formal freedom-to-operate analysis against Modalmed’s patent family. The fact that Modalmed has already initiated litigation, structured it to target anonymous sellers, and retained refiling rights signals a proactive enforcement posture. Ignoring these patents carries material risk of injunction, damages, and marketplace delisting.
PatSnap Eureka’s FTO Search Agent can map the claim scope of US10684483B2 and US11372252B2 against your product specifications in minutes — identifying overlapping limitations, prosecution history estoppel, and design-around opportunities. For product teams in the wearable health device space, Eureka can also surface related patent families and prior art that may be relevant to validity challenges, giving your IP team a complete picture before commercial launch.
Run a freedom-to-operate analysis on US10684483B2 to assess your product’s exposure
Run FTO in Eureka →Similar Eye Massager & Wearable Health Device Patent Cases
Browse related patent infringement cases involving headwear eye massager and wearable health technology, litigated in the Northern District of Illinois and peer courts.
What this case signals for the wearable eye massager IP landscape
A 53-day John Doe filing is rarely the end — it typically marks the beginning of a broader enforcement campaign.
Modalmed’s patents remain live and actively asserted
The without-prejudice dismissal means US10684483B2 and US11372252B2 are not exhausted by this litigation. Any party manufacturing, importing, or distributing headwear eye massager products should treat these patents as an active enforcement risk. Modalmed’s willingness to file and quickly exit suggests a targeted, iterative enforcement strategy rather than a one-off dispute.
John Doe structures signal e-commerce enforcement campaigns
Filing against anonymous defendants is a recognised mechanism for pursuing marketplace sellers on platforms like Amazon or AliExpress. The rapid resolution here is consistent with early settlement, voluntary product withdrawal, or a subpoena-based identification process. Companies distributing eye massager devices through online channels should audit their supplier IP clearances immediately.
Modalmed v John — key questions answered
It means the court terminated the case without ruling on the merits of Modalmed’s patent infringement claims. Modalmed retains the right to refile the same claims against the same or related defendants in the future. No injunction, damages award, or validity finding was issued.
Modalmed asserted two patents: US10684483B2 (application US16/035097) and US11372252B2 (application US16/902217), both covering headwear eye massager technology. The asserted products were described as headwear eye massager products.
Filing against a John Doe defendant is a recognised litigation strategy used when the infringer’s identity is not yet confirmed — common in e-commerce enforcement actions targeting anonymous online marketplace sellers. It allows a plaintiff to initiate proceedings and potentially use discovery to identify the seller before formal service.
Rule 41(a)(1)(A)(i) permits a plaintiff to voluntarily dismiss an action by filing a notice of dismissal before the opposing party serves an answer or motion for summary judgment. No court order is required. Because the dismissal is without prejudice, the statutory default under Rule 41 applies and the claims are not extinguished.
Yes. A dismissal without prejudice under Rule 41(a)(1)(A)(i) preserves the plaintiff’s right to refile. However, under the ‘two-dismissal rule,’ a second voluntary dismissal of the same claim against the same defendant would operate as a dismissal with prejudice. Modalmed’s window to refile a stronger action is strategically significant.
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