Mira v. Google: Patent Infringement Suit Over Google Keep Dismissed With Prejudice
Mira Advanced Technology Systems sued Google in the Southern District of New York, asserting that the Google Keep note-taking application infringed US10594854B2. After 883 days, the Federal Circuit affirmed the district court’s dismissal with prejudice, permanently closing the matter.
Federal Circuit-affirmed dismissal in the mobile note-taking software IP space
On September 23, 2021, Mira Advanced Technology Systems, Inc. filed suit against Google LLC in the U.S. District Court for the Southern District of New York, asserting infringement of U.S. Patent No. 10,594,854 B2. The product at the centre of the dispute was Google Keep, Google’s widely used note-taking and task-management software application. The case was presided over by Chief Judge Andrew L. Carter, with Mira represented by JDM Patent Law PLLC and Google fielding a large team from Troutman Pepper Hamilton Sanders and Williams & Connolly.
The district court dismissed Mira’s claims against Google with prejudice — a ruling that Mira subsequently appealed to the United States Court of Appeals for the Federal Circuit. The Federal Circuit affirmed the lower court’s decision, after which the parties submitted a joint status report and the clerk was directed to formally terminate the case. The case closed on February 23, 2024. A dismissal with prejudice following Federal Circuit affirmance is a particularly final outcome: it extinguishes Mira’s ability to relitigate the same infringement claims against Google based on this patent.
The 883-day duration suggests the appeal to the Federal Circuit accounted for a substantial portion of the total case timeline, since district court dismissals on threshold grounds can be entered relatively early. The Federal Circuit’s affirmance indicates the appellate court found no reversible error in the lower court’s reasoning. The public record does not disclose the precise legal basis for the original dismissal — whether it rested on invalidity, non-infringement, subject-matter eligibility, or procedural grounds — which limits further inference about the strength of the underlying patent claims.
Filing to dismissal in 883 days
883 days from filing to closure — over two and a half years of active litigation
Dismissed with prejudice after Federal Circuit affirmance — no refiling possible
Dismissal with prejudice: a permanently closed door
A dismissal with prejudice is not a procedural pause — it is a final adjudication on the merits that bars the plaintiff from bringing the same claims in any future action. Combined with the Federal Circuit’s affirmance of the underlying ruling, Mira has exhausted the standard appellate path. Unless the Supreme Court were to intervene — a statistically rare event — the infringement claims based on US10594854B2 against Google are permanently resolved in Google’s favour.
Res judicata appliesFederal Circuit affirmance makes outcome doubly final
The Federal Circuit is the exclusive appellate court for U.S. patent matters. Its affirmance of the district court’s dismissal means both the trial-level reasoning and the outcome survived appellate scrutiny. This dual-layer finality is significant: it suggests the dismissal was not a close call on procedure, and any legal theory Mira advanced was considered and rejected at two court levels. Competing parties in the note-taking software space can treat this patent’s enforceability against Google’s Keep product as settled.
Affirmed at Federal CircuitUS10594854B2 remains a filed patent despite litigation loss
A dismissal with prejudice in this action does not invalidate US10594854B2. The patent remains in force unless separately challenged via inter partes review or ex parte reexamination at the USPTO. Companies in the information management and note-taking software sector should not conflate Google’s successful defence with a clean patent landscape — the patent could still be asserted against different defendants or for different infringing products.
Patent not invalidatedOutcome limits Mira’s leverage over Google Keep specifically
The with-prejudice dismissal effectively insulates Google Keep from further litigation by Mira on this patent. For Google, this represents a clear enforcement barrier against this specific plaintiff-patent pairing. For competitors or licensees of US10594854B2, however, the outcome does not automatically confer the same protection — each defendant must litigate or negotiate separately. The case suggests Mira’s infringement theory as applied to Google Keep did not survive judicial scrutiny at any level.
Google Keep clearedFull party and counsel information
| Role | Name | Type | Detail |
|---|---|---|---|
| Plaintiff | Mira Advanced Technology Systems, Inc. | Company | Technology IP assertion firm — holder of US10594854B2 covering information management softwareSearch in Eureka ↗ |
| Defendant | Google, LLC | Company | Google LLC — global technology company and developer of the Google Keep applicationSearch in Eureka ↗ |
| Plaintiff counsel | Jundong Ma | Attorney | Counsel for Mira Advanced Technology Systems, Inc.Search in Eureka ↗ |
| Defendant counsel | Adam Harber | Attorney | Counsel for Google, LLCSearch in Eureka ↗ |
| Defendant counsel | Adam Pan | Attorney | Counsel for Google, LLCSearch in Eureka ↗ |
| Defendant counsel | Andrew Trask | Attorney | Counsel for Google, LLCSearch in Eureka ↗ |
| Defendant counsel | Andrew Vincent Trask | Attorney | Counsel for Google, LLCSearch in Eureka ↗ |
| Defendant counsel | Dabney Jefferson Carr , IV | Attorney | Counsel for Google, LLCSearch in Eureka ↗ |
| Defendant counsel | Debmallo Shayon Ghosh | Attorney | Counsel for Google, LLCSearch in Eureka ↗ |
| Defendant counsel | Laura Anne Kuykendall | Attorney | Counsel for Google, LLCSearch in Eureka ↗ |
| Defendant counsel | Mary Catherine Zinsner | Attorney | Counsel for Google, LLCSearch in Eureka ↗ |
| Defendant counsel | Robert Armistead Angle | Attorney | Counsel for Google, LLCSearch in Eureka ↗ |
| Presiding judge | Judge Andrew L. Carter | Chief Judge | New York Southern District Court — Chief JudgeSearch in Eureka ↗ |
Stipulation of dismissal — official text
The closing order’s language — ‘having affirmed this Court’s prior decision dismissing Plaintiff’s claims against Defendant with prejudice’ — confirms the Federal Circuit issued a substantive affirmance rather than a remand or partial reversal. The joint status report submission by both parties following the Federal Circuit ruling suggests an orderly, uncontested wind-down, with no outstanding collateral issues such as sanctions, fee motions, or counterclaims requiring separate resolution. The directive to the clerk to ‘terminate’ the case is administrative closure language confirming no further proceedings are anticipated. For Google, this language provides the strongest possible litigation shield against Mira on this patent-product pairing.
US10594854B2 — Information management and note-taking software technology
U.S. Patent No. 10,594,854 B2 (application number US16/427278) is assigned to Mira Advanced Technology Systems, Inc. and covers technology in the information management and note-taking software domain. The patent’s B2 designation indicates it issued following examination with granted claims. The application number prefix US16/ places it within the USPTO’s filing cycle consistent with applications filed in the mid-to-late 2010s. The patent was asserted as covering functionality embodied in Google Keep, a widely deployed productivity application used for capturing notes, lists, images, and reminders across Google’s platform ecosystem.
The strategic significance of this patent lies in the breadth of the productivity software market it targets. Google Keep competes with products such as Apple Notes, Microsoft OneNote, and Notion — meaning a patent that could plausibly read on Keep’s core functionality would carry substantial licensing leverage across the sector. The Federal Circuit’s affirmance of the dismissal suggests the court found Mira’s infringement theory as applied to Keep unpersuasive, which may limit the patent’s effective scope in future assertions against similar products. Companies in the note-taking and task-management software space should monitor the Federal Circuit opinion for any claim construction guidance that affects their own product designs.
Should your product team run an FTO against US10594854B2?
If your organisation develops or markets note-taking, task-management, or personal information management software — whether as a standalone application or embedded within a productivity suite — US10594854B2 warrants an FTO review. The fact that Mira’s claims against Google Keep were dismissed with prejudice after Federal Circuit review does not automatically confer clearance for other products or companies. Each FTO assessment must map specific product features against the patent’s granted claims independently. The patent remains in force and could be asserted against a different defendant with a different fact pattern.
PatSnap Eureka’s FTO Search Agent allows product and IP teams to map US10594854B2’s claim language against your specific feature set quickly, surfacing relevant prior art, claim scope analysis, and litigation history in a single workflow. Given that this patent has already been through two levels of federal court scrutiny, Eureka’s claim monitoring tools can also flag any continuation or divisional applications that may carry related claims — an important consideration when a parent patent has been the subject of high-profile litigation.
Run a freedom-to-operate analysis on US10594854B2 to assess your product’s exposure
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What this case signals for the note-taking and productivity software IP landscape
A Federal Circuit-affirmed dismissal against Google carries meaningful signals for how this patent class is likely to be enforced going forward.
Dismissal with prejudice sets a high bar for future assertion of this patent
Any future plaintiff relying on US10594854B2 against a note-taking software product will face defendants citing this outcome as persuasive precedent. The Federal Circuit affirmance strengthens that position considerably. Prospective licensees or defendants should factor this litigation history into any infringement assessment or licensing negotiation involving this patent.
Small plaintiff, large defence team — resourcing asymmetry is a strategic variable
Mira retained a single-attorney boutique (JDM Patent Law PLLC) while Google deployed nine named attorneys across three law firms. This resourcing gap is consistent with a defence strategy designed to exhaust a smaller opponent through procedural and appellate attrition. R&D teams facing similar asymmetric assertion should model the full appellate timeline when budgeting defence costs.
Mira v Google — key questions answered
The case was dismissed with prejudice. The Southern District of New York dismissed Mira’s infringement claims against Google, and the Federal Circuit affirmed that decision on appeal. The case formally closed on February 23, 2024, after 883 days of litigation. Mira cannot refile the same claims against Google based on this patent.
Mira asserted U.S. Patent No. 10,594,854 B2 (USPTO application number US16/427278). The patent covers technology in the information management and note-taking software domain, and Mira alleged that the Google Keep application infringed its claims.
The public record confirms dismissal with prejudice affirmed by the Federal Circuit, but does not disclose the specific legal basis — such as § 101 subject-matter eligibility, claim construction, non-infringement, or procedural grounds. The Federal Circuit’s affirmance without remand suggests the underlying reasoning was substantively sound at both court levels.
No. A dismissal with prejudice resolves the infringement claims between Mira and Google only. It does not constitute a patent invalidity ruling. US10594854B2 remains a granted patent and could be asserted against other defendants or for other products unless separately invalidated through USPTO proceedings such as inter partes review.
The case was filed in the U.S. District Court for the Southern District of New York (Case No. 1:21-cv-07931), presided over by Chief Judge Andrew L. Carter. The dismissal was subsequently appealed to and affirmed by the United States Court of Appeals for the Federal Circuit, which has exclusive jurisdiction over U.S. patent appeals.
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