Sandstrom v. Nokia: Infringement Action Voluntarily Dismissed in 90 Days
Individual inventor Mark Sandstrom filed suit against Nokia Corp. and Nokia of America Corporation in the District of Minnesota asserting US8619769B2 against the Nokia 7750-SR service router. The case closed just 90 days after filing via voluntary dismissal under Rule 41(a)(1)(A)(i), before Nokia served any responsive pleading.
Individual inventor exits Nokia suit before Nokia could respond
On August 1, 2024, individual inventor Mark Sandstrom filed a patent infringement action against Nokia Corp. and Nokia of America Corporation in the U.S. District Court for the District of Minnesota. The suit asserted US8619769B2 — a patent filed under application number US12/390387 — against Nokia’s 7750-SR service router, a flagship carrier-grade routing platform used widely in telecommunications infrastructure.
The case closed on October 30, 2024, just 90 days after filing. Sandstrom invoked Rule 41(a)(1)(A)(i) of the Federal Rules of Civil Procedure to file a notice of voluntary dismissal before Nokia served either an answer or a motion for summary judgment. Under that rule, such a dismissal is self-executing and requires no court order. The dismissal was stated to be without prejudice, meaning Sandstrom retains the legal right to refile the claims.
The speed of resolution — 90 days, before Nokia filed any responsive pleading — is consistent with several common scenarios: early settlement negotiations, a licensing discussion, a reassessment of claim scope, or a decision to refile in a different forum. The public record does not disclose which factor drove the dismissal. Nokia’s retention of Alston & Bird LLP and Sapientia Law Group suggests the defendant was preparing a substantive defense, which may have influenced the plaintiff’s calculus.
Filing to Voluntary dismissal in 90 days
90 days — resolved before Nokia filed any answer or summary judgment motion
Voluntarily dismissed: what the Rule 41 exit means for both parties
Rule 41(a)(1)(A)(i): a self-executing exit before Nokia responded
Rule 41(a)(1)(A)(i) permits a plaintiff to dismiss an action without a court order by filing a notice before the opposing party serves an answer or a summary judgment motion. Nokia had not yet done either. This mechanism is self-executing — the dismissal takes effect upon filing. No judicial approval is required, and no costs are awarded as a matter of right under this rule alone.
Pre-answer voluntary dismissalWithout prejudice — but the record is silent on why
The notice expressly states ‘without prejudice,’ meaning Sandstrom is not barred from refiling the same claims against Nokia in a future action. This is legally distinct from a dismissal with prejudice, which would extinguish the claims permanently. The public record does not disclose whether a settlement, license, or strategic reassessment drove the decision — that determination cannot be made from the docket alone.
Refiling rights preservedNokia avoids a merits ruling — but faces potential re-exposure
Nokia secured an exit without any adverse ruling, and incurred no formal fee or cost award. However, because the dismissal is without prejudice, Nokia’s 7750-SR product and US8619769B2 remain in potential conflict. Nokia’s assembly of Alston & Bird and Sapientia Law Group suggests substantive invalidity or non-infringement defenses were being developed — work that may need to be revisited if suit is refiled.
No merits adjudicationPatent remains live — 7750-SR exposure persists for Nokia
US8619769B2 has not been adjudicated invalid or not infringed. For Nokia and potential licensees of the 7750-SR platform, this case signals an active enforcement posture by Sandstrom. Companies in the carrier-grade routing space — particularly those deploying service routers with similar packet-forwarding architectures — should monitor this patent for potential refiling or assertion against other products.
Patent still enforceableFull party and counsel information
| Role | Name | Type | Detail |
|---|---|---|---|
| Plaintiff | Mark Sandstrom | Individual | Individual inventor — holder of US8619769B2 in network routing technologySearch in Eureka ↗ |
| Defendant | Nokia, Corp. | Company | Nokia Corp. and Nokia of America Corp. — global telecommunications equipment manufacturerSearch in Eureka ↗ |
| Co-Defendant | Nokia of America Corporation | Company | Search in Eureka ↗ |
| Plaintiff counsel | Mark Sandstrom | Attorney | Counsel for Mark SandstromSearch in Eureka ↗ |
| Defendant counsel | Jonathan A. Strauss | Attorney | Counsel for Nokia, Corp.Search in Eureka ↗ |
| Defendant counsel | Karlee N. Wroblewski | Attorney | Counsel for Nokia, Corp.Search in Eureka ↗ |
| Defendant counsel | Matthew Scott Stevens | Attorney | Counsel for Nokia, Corp.Search in Eureka ↗ |
| Defendant counsel | Sonia L Miller-Van Oort | Attorney | Counsel for Nokia, Corp.Search in Eureka ↗ |
| Defendant law firm | Alston & Bird LLP | Law Firm | Representing Nokia, Corp.Search in Eureka ↗ |
| Defendant law firm | Sapientia Law Group PLLC | Law Firm | Representing Nokia, Corp.Search in Eureka ↗ |
| Presiding judge | Judge N/A | Judge | Minnesota District CourtSearch in Eureka ↗ |
Official order — verbatim text
The dismissal notice invokes Rule 41(a)(1)(A)(i) precisely and states ‘without prejudice’ — both elements carry distinct legal significance. The pre-answer timing means Nokia had no opportunity to file a counterclaim, which would have required Nokia’s consent for dismissal under Rule 41(a)(1)(B). No merits determination was made. The without-prejudice designation leaves the patent’s validity and infringement questions entirely open, and Sandstrom’s claims against Nokia’s 7750-SR product remain legally unresolved.
US8619769B2 — Network packet routing and service router technology
US8619769B2, filed under application number US12/390387, relates to network routing technology and was asserted against Nokia’s 7750-SR — a carrier-grade service router deployed extensively in telecommunications and internet service provider networks. The patent’s grant status confirms it survived examination, and its assertion against a flagship Nokia platform suggests claim language that, in Sandstrom’s view, reads on commercial routing implementations at scale.
For the telecommunications equipment sector, US8619769B2 represents the type of individually held patent that can create disproportionate enforcement risk. Individual inventors asserting patents against major infrastructure vendors often signal either a licensing-first strategy or a belief that the patent covers architectural choices embedded across a product line. With the 7750-SR targeted and no invalidity ruling on record, this patent warrants ongoing monitoring by any vendor whose service router implements similar forwarding or routing logic.
Should you run an FTO against US8619769B2?
Any company designing, deploying, or integrating carrier-grade service routers — particularly platforms with packet-forwarding architectures comparable to the Nokia 7750-SR — should assess their exposure to US8619769B2. The patent has not been found invalid or not infringed. The voluntary dismissal without prejudice means enforcement risk persists, and the plaintiff has preserved the right to refile in any competent jurisdiction.
PatSnap Eureka’s FTO Search Agent enables R&D and IP teams to map US8619769B2’s claim language against their specific router architectures, identify prosecution history estoppel, and surface related family members or continuations that may extend the risk footprint. Running a targeted FTO now — before any refiling — is materially cheaper than building a defense after a new complaint lands.
Run a freedom-to-operate analysis on US8619769B2 to assess your product’s exposure
Run FTO in Eureka →Similar patent cases: network routing IP litigation in U.S. district courts
Cases involving network routing and service router patents in U.S. district courts — particularly pre-answer dismissals and individual inventor assertions against major telecom equipment vendors.
What this case signals for the network routing IP landscape
A pre-answer voluntary dismissal against a well-resourced defendant like Nokia rarely ends the story — it typically resets it.
Without-prejudice exit preserves the threat — Nokia is not in the clear
Because the dismissal is without prejudice, Sandstrom retains full rights to refile. For Nokia and any carrier deploying the 7750-SR, the risk window has not closed. Patent teams should treat this as a pause, not a resolution, and maintain their FTO analysis on US8619769B2.
Pre-answer timing suggests leverage-driven strategy, not case weakness
Dismissing before Nokia responded eliminates the risk of an early invalidity or non-infringement ruling on the record. This timing is consistent with a plaintiff preserving optionality — whether to negotiate, refile, or assert the patent elsewhere — rather than conceding on the merits.
Sandstrom v Nokia — key questions answered
The case was dismissed without prejudice. Plaintiff Mark Sandstrom filed a notice under Rule 41(a)(1)(A)(i) stating the action was ‘voluntarily dismissed without prejudice against Defendant Nokia.’ This means Sandstrom retains the right to refile the same patent infringement claims in a future action.
The sole patent asserted was US8619769B2, filed under application number US12/390387. It was asserted in connection with Nokia’s 7750-SR carrier-grade service router in the District of Minnesota.
The public record does not disclose the reason. The dismissal occurred before Nokia filed any answer or summary judgment motion — a timing consistent with early settlement, licensing discussions, strategic reassessment, or a decision to refile elsewhere. No court order or explanation was required under Rule 41(a)(1)(A)(i).
No. The voluntary dismissal without prejudice carries no merits determination. US8619769B2 was not found invalid or not infringed. The patent remains in force and the claims against Nokia’s 7750-SR product are legally unresolved.
Nokia was represented by Alston & Bird LLP and Sapientia Law Group PLLC. Counsel of record included Jonathan A. Strauss, Karlee N. Wroblewski, Matthew Scott Stevens, and Sonia L. Miller-Van Oort. Mark Sandstrom appeared to represent himself as plaintiff.
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