Safecast v. Google: Voluntary Dismissal After 158-Day Patent Dispute
Safecast Limited filed a patent infringement action against Google LLC in the Northern District of California, asserting US9392302B2 against Google-owned advertising products. The case closed in under six months when Safecast voluntarily dismissed all claims without prejudice — with each party bearing its own costs.
Safecast exits early against Google, leaving claims alive
On 23 June 2023, Safecast Limited filed a patent infringement action against Google LLC in the United States District Court for the Northern District of California (Case No. 5:23-cv-03128), asserting US9392302B2 against Google-owned advertising products. Safecast was represented by Ramey & Schwaller, LLP and Ramey LLP; Google marshalled a substantially larger defence team drawn from O'Melveny & Myers LLP, Debevoise & Plimpton LLP, McGuireWoods LLP, and Potter Minton PC.
The case closed on 28 November 2023 — 158 days after filing — when Safecast filed a notice of voluntary dismissal pursuant to Federal Rule of Civil Procedure 41(a)(1)(A)(i), available as of right before Google had served an answer or filed a motion for summary judgment. The recorded Basis of Termination is 'Voluntary dismissal'; the docket order states the dismissal of Plaintiff's claims is without prejudice as to the asserted patent, with each party bearing its own costs, expenses, and attorneys' fees. The specific terms underlying the dismissal decision are not disclosed in the available record.
A 158-day lifespan — terminating before Google even answered — is consistent with an early strategic reassessment by the plaintiff. The without-prejudice nature of the dismissal means Safecast retains the right to assert US9392302B2 again, whether against Google or other parties. What drove the decision to dismiss at this stage, and whether any discussions occurred between the parties, is not disclosed in the available public record.
See Complete Case & Patent Analysis →Filing to Voluntary dismissal in 158 days
158 days from filing to closure — resolved before Google filed any answer or dispositive motion
US9392302B2 — advertising technology patent at the centre of the dispute
Any company developing or deploying advertising technology products — particularly those competing in or adjacent to Google's advertising ecosystem — should assess their exposure to US9392302B2. The patent was not invalidated or found non-infringed in this litigation, and the without-prejudice dismissal means enforcement risk persists. Product teams building ad-serving, targeting, or measurement tools are the most directly relevant audience.
Official order — verbatim text
The dismissal notice invokes Rule 41(a)(1)(A)(i) and expressly states the withdrawal is without prejudice, with each party bearing its own costs. This procedural exit — filed before Google answered — means no court has assessed the merits of the infringement claim or the validity of US9392302B2. The patent remains in force and the plaintiff retains full freedom to refile.
Voluntarily dismissed: what the Rule 41 exit means for both parties
Rule 41(a)(1)(A)(i): dismissal as of right, no court order needed
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 defendant has served an answer or a motion for summary judgment. Because Google had not yet answered, Safecast could exit as of right. The dismissal takes effect upon filing — no judicial approval is required.
Pre-answer dismissalWithout prejudice: the distinction that matters for future enforcement
A dismissal without prejudice does not adjudicate the merits of the claim. It leaves Safecast free to refile the action against Google or to assert the same patent against third parties. A dismissal with prejudice, by contrast, would bar refiling. The docket order expressly states this dismissal is without prejudice as to the asserted patent — preserving Safecast's enforcement options. Whether any informal commitment was reached between the parties is not disclosed in the available record.
Claims preservedGoogle exits without a merits ruling — but faces residual risk
Google obtains dismissal of the current action without any finding of infringement or validity. However, because the dismissal is without prejudice, Google has not secured a ruling that US9392302B2 is invalid or not infringed. The patent remains a live enforcement instrument. Google's substantial defence team — five law firms represented — suggests it was prepared to contest the claims vigorously had the case proceeded.
No merits adjudicationAdvertising-tech patent remains enforceable against the sector
US9392302B2 survives this litigation unchallenged. Companies operating in the advertising technology space — including competitors to and partners of Google — should note that the patent has not been invalidated and the assertion has not been resolved on the merits. The without-prejudice dismissal keeps Safecast's enforcement posture intact. Monitoring this patent's prosecution history and any subsequent litigation activity is advisable for FTO purposes.
Patent remains activeFull party and counsel information
| Role | Name | Type | Detail |
|---|---|---|---|
| Plaintiff | Safecast Limited | Individual | /Search in Eureka ↗ |
| Defendant | Google, LLC | Company | /Search in Eureka ↗ |
| Plaintiff counsel | Susan S.Q. Kalra | Attorney | Counsel for Safecast LimitedSearch in Eureka ↗ |
| Plaintiff counsel | William Peterson Ramey , III | Attorney | Counsel for Safecast LimitedSearch in Eureka ↗ |
| Plaintiff law firm | Ramey & Schwaller, LLP | Law Firm | Representing Safecast LimitedSearch in Eureka ↗ |
| Plaintiff law firm | Ramey LLP | Law Firm | Representing Safecast LimitedSearch in Eureka ↗ |
| Defendant counsel | Amy K. Liang | Attorney | Counsel for Google, LLCSearch in Eureka ↗ |
| Defendant counsel | Andrew Bledsoe | Attorney | Counsel for Google, LLCSearch in Eureka ↗ |
| Defendant counsel | Darin W. Snyder | Attorney | Counsel for Google, LLCSearch in Eureka ↗ |
| Defendant counsel | David S. Almeling | Attorney | Counsel for Google, LLCSearch in Eureka ↗ |
| Defendant counsel | Luann L. Simmons | Attorney | Counsel for Google, LLCSearch in Eureka ↗ |
| Defendant counsel | Mark A. Hayden | Attorney | Counsel for Google, LLCSearch in Eureka ↗ |
| Defendant counsel | Michael E. Jones | Attorney | Counsel for Google, LLCSearch in Eureka ↗ |
| Defendant counsel | Saurabh Prabhakar | Attorney | Counsel for Google, LLCSearch in Eureka ↗ |
| Defendant counsel | Shaun William Hassett | Attorney | Counsel for Google, LLCSearch in Eureka ↗ |
| Defendant law firm | Debevoise & Plimpton LLP | Law Firm | Representing Google, LLCSearch in Eureka ↗ |
| Defendant law firm | McGuireWoods LLP | Law Firm | Representing Google, LLCSearch in Eureka ↗ |
| Defendant law firm | O'Melveny & Myers LLP | Law Firm | Representing Google, LLCSearch in Eureka ↗ |
| Defendant law firm | Potter Minton PC | Law Firm | Representing Google, LLCSearch in Eureka ↗ |
| Presiding judge | Judge N/A | Judge | California Northern District CourtSearch in Eureka ↗ |
R&D signals in the advertising-technology patent space
Forward-looking patent and innovation intelligence derived from Safecast v. Google — tracking portfolio activity, filing trends, and white space around US9392302B2 and advertising-tech IP.
Safecast's patent holdings beyond US9392302B2
Safecast Limited's broader patent portfolio may include related applications, continuations, or divisionals that extend the reach of the technology claimed in US9392302B2. Understanding the full scope of Safecast's holdings is essential for any company assessing re-assertion risk in the advertising-technology domain — particularly given the without-prejudice exit from this case.
Portfolio breadthPatent filing trends in advertising-technology systems
The advertising-technology sector continues to attract heavy patent filings from both incumbents and assertion entities. Tracking filing activity around ad-serving, targeting, measurement, and programmatic advertising can surface emerging IP risks and identify where the next wave of enforcement is likely to concentrate.
Filing trendsGoogle's defensive patent portfolio in advertising technology
Google holds an extensive patent portfolio covering advertising systems, auction mechanisms, targeting, and measurement. Mapping Google's own filings in these areas can inform understanding of the competitive IP landscape — and signal where Google is building defensive moats against assertion entities and competitors alike.
Google IP postureInnovation gaps adjacent to US9392302B2's claimed technology
Identifying white-space opportunities around the technology claimed in US9392302B2 — areas where patent density is low but commercial activity is growing — can help R&D teams file defensively or design around existing claims. Adjacent areas in privacy-preserving advertising, contextual targeting, and cookieless measurement may represent under-patented territory.
White space opportunitySimilar advertising-tech patent cases in N.D. California
Explore patent infringement cases involving advertising technology products litigated in the Northern District of California, including related assertion campaigns and pre-answer dismissals.
What this case signals for the advertising-tech IP landscape
A pre-answer, without-prejudice exit in a Google patent case is a pattern worth tracking — the patent and plaintiff remain active.
US9392302B2 remains a live enforcement risk for ad-tech operators
The voluntary, without-prejudice dismissal means the patent has survived this litigation without any validity or infringement ruling. Any company deploying advertising technology that could fall within the patent's claims should treat this as a continuing risk and consider conducting or refreshing a freedom-to-operate analysis.
Pre-answer dismissals often signal portfolio-level strategy shifts
Safecast's exit before Google answered — and before any claim construction or discovery — is consistent with a strategic reassessment, whether driven by claim scope, resource allocation, or other considerations not visible in the public record. Watching Safecast's broader filing activity in this technology domain is advisable.
Limited v Google — key questions answered
The case was voluntarily dismissed by Safecast Limited on 28 November 2023. The dismissal was filed under Federal Rule of Civil Procedure 41(a)(1)(A)(i), without prejudice to the asserted patent (US9392302B2), with each party bearing its own costs, expenses, and attorneys' fees. No merits ruling was issued.
A without-prejudice dismissal means the patent has not been adjudicated on the merits — no finding of infringement or invalidity was made. Safecast retains the right to refile against Google or assert US9392302B2 against other parties. The patent remains in force and is a continuing enforcement risk for advertising-technology operators.
The case ended before Google filed an answer or any dispositive motion, making a Rule 41(a)(1)(A)(i) voluntary dismissal available to Safecast as of right. The specific reasons behind the decision to dismiss at this early stage are not disclosed in the available public record.
Safecast asserted US9392302B2 (application number US13/990372) against Google-owned advertising products. The specific technical claims and accused product features alleged in the complaint are not reproduced in the available case record; the patent's prosecution history and claim text provide the authoritative scope analysis.
Yes. Because the dismissal was expressly without prejudice, Safecast is not barred from refiling. However, a second voluntary dismissal of the same claim against the same defendant would operate as an adjudication on the merits under Rule 41(a)(1)(B) — the 'two-dismissal rule' — and would then bar further refiling.
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