EcoFactor v. Google: Federal Circuit Appeal Voluntarily Dismissed (518 Days)
EcoFactor, Inc. and Google LLC were before the Court of Appeals for the Federal Circuit in an infringement dispute over four patents covering networked thermostat systems and wireless energy management. Appeal No. 22-1974 was voluntarily dismissed under Fed. R. App. P. 42(b) on 30 November 2023, with each side bearing its own costs.
Smart thermostat patent appeals quietly withdrawn at the Federal Circuit
EcoFactor, Inc. and Google LLC were engaged in appellate proceedings at the Court of Appeals for the Federal Circuit arising from a patent infringement action. The dispute involved four U.S. patents — US8412488B2, US8180492B2, US8738327B2, and US10534382B2 — covering systems and methods for using networked thermostats to verify peak demand reduction and for using wireless devices as sensors in energy management systems. The appeal was docketed on 30 June 2022.
The recorded basis of termination is Voluntary dismissal. The docket order, issued 30 November 2023, states that Appeal No. 22-1974 was dismissed under Fed. R. App. P. 42(b), with each side to bear its own costs. The same order simultaneously dismissed the related Appeal No. 22-1971 on identical terms, while directing the parties to file responses to a notice of oral argument in the separately docketed Appeal No. 2023-1101.
The dismissal of both 22-1971 and 22-1974 on the same date, while a third related appeal (2023-1101) remained active as of the order, suggests the parties were actively managing a multi-appeal docket. No merits ruling was issued in this appeal. The specific terms underlying the voluntary dismissal are not disclosed in the available record.
See Complete Case & Patent Analysis →Filing to Voluntary dismissal in 518 days
518 days from filing to dismissal — a mid-length Federal Circuit appeal
US8412488B2 and three further EcoFactor thermostat patents
Any company developing or commercialising networked thermostat systems, demand-response energy management platforms, or wireless sensor integration for HVAC and grid applications should consider a freedom-to-operate review against EcoFactor's patent portfolio. The four asserted patents cover broad system and method claims in these areas, and no Federal Circuit merits ruling has yet narrowed or invalidated them through this appeal.
Official order — verbatim text
The order dismisses Appeal No. 22-1974 under Fed. R. App. P. 42(b) with each party bearing its own costs, consistent with a voluntary withdrawal rather than any merits determination. The Federal Circuit issued no ruling on infringement, validity, or claim construction. The simultaneous dismissal of the related 22-1971 appeal and the continuing referral to 2023-1101 suggest this withdrawal was one coordinated step in broader multi-appeal management between the parties.
Voluntarily dismissed: what the withdrawal means for both parties
Fed. R. App. P. 42(b): voluntary dismissal at the appellate level
Rule 42(b) allows a party to dismiss an appeal by filing a signed dismissal agreement or on motion. Crucially, no merits ruling is issued — the Federal Circuit makes no determination on the underlying patent claims or infringement findings. The dismissal is procedural, not substantive. The order here specifies each side bears its own costs, which is the standard default under Rule 42(b) absent agreement otherwise.
No merits adjudicationWith or without prejudice? The public record is silent
The recorded basis of termination is Voluntary dismissal without specifying whether it is with or without prejudice. The docket order itself does not resolve this. The distinction matters: a dismissal with prejudice bars re-litigation of the same claims, while one without prejudice does not. The specific terms are not disclosed in the available record, and no inference should be drawn either way from the public docket alone.
Prejudice status undisclosedEcoFactor: no appellate loss on record, litigation continues elsewhere
Because the appeal was dismissed without a merits ruling, EcoFactor does not carry a Federal Circuit adverse ruling on these four patents from this proceeding. The related Appeal No. 2023-1101 remained active as of the dismissal order, indicating EcoFactor's dispute with Google was not fully resolved at that date. The four asserted patents retain whatever enforceability they held prior to this appeal.
No adverse appellate rulingNetworked thermostat IP remains unresolved at appellate level
The voluntary dismissal of this appeal leaves no Federal Circuit precedent on the validity or infringement scope of EcoFactor's networked thermostat and wireless energy management patents. Companies operating in the smart home, HVAC control, or demand-response energy sector who are monitoring these patents for FTO purposes should note that the underlying patent claims were not adjudicated here. The continuing appeal (2023-1101) may eventually produce a substantive ruling.
No appellate precedent setFull party and counsel information
| Role | Name | Type | Detail |
|---|---|---|---|
| Plaintiff | EcoFactor, Inc | Company | /Search in Eureka ↗ |
| Co-Plaintiff | Google, LLC | Company | Search in Eureka ↗ |
| Defendant | Defendant | Individual | /Search in Eureka ↗ |
| Plaintiff counsel | Brian David Ledahl | Attorney | Counsel for EcoFactor, IncSearch in Eureka ↗ |
| Plaintiff counsel | James Pickens | Attorney | Counsel for EcoFactor, IncSearch in Eureka ↗ |
| Plaintiff counsel | Kristopher Davis | Attorney | Counsel for EcoFactor, IncSearch in Eureka ↗ |
| Plaintiff counsel | Marc A. Fenster Counsel | Attorney | Counsel for EcoFactor, IncSearch in Eureka ↗ |
| Plaintiff counsel | Minna Chan | Attorney | Counsel for EcoFactor, IncSearch in Eureka ↗ |
| Plaintiff counsel | Reza Mirzaie | Attorney | Counsel for EcoFactor, IncSearch in Eureka ↗ |
| Plaintiff law firm | Russ August & Kabat LLP | Law Firm | Representing EcoFactor, IncSearch in Eureka ↗ |
| Presiding judge | Judge N/A | Judge | Court of Appeals for the Federal CircuitSearch in Eureka ↗ |
R&D signals in the smart thermostat and energy management IP space
Forward-looking patent intelligence on EcoFactor's thermostat portfolio, Google's smart home IP posture, and the wider demand-response and wireless energy management innovation landscape.
EcoFactor's thermostat patent portfolio: breadth and filing activity
EcoFactor has asserted at least four patents spanning networked thermostat demand-response and wireless sensor integration. Understanding the full scope and filing timeline of its portfolio — including any continuations or divisionals from the asserted application numbers — is essential for companies operating in connected HVAC and grid-edge markets.
Portfolio mappingFiling trends in networked thermostat and demand-response systems
Patenting activity in thermostat network orchestration, peak demand reduction verification, and wireless sensor-based energy management has grown alongside smart home adoption. Mapping recent filings in this space reveals which players are building defensive or offensive portfolios adjacent to EcoFactor's asserted claim areas.
Landscape filing trendsGoogle's smart home and HVAC patent position
As the defendant in EcoFactor's multi-appeal enforcement campaign, Google's own patent activity in smart thermostat, Nest, and demand-response technology is a relevant signal for competitors. Analysing Google's filing posture in these areas may indicate where it perceives the strongest technical differentiation or defensive value.
Competitive IP intelligenceAdjacent innovation opportunities in grid-edge thermostat technology
EcoFactor's asserted patents focus on demand verification and wireless sensor integration at the thermostat level. Adjacent claim areas — such as machine learning-based demand forecasting, grid API integration, or multi-device energy orchestration — may represent white space where new filings can establish differentiated IP positions outside the asserted claim scope.
White space opportunitySimilar Federal Circuit appeals in smart thermostat and energy management patent disputes
Browse related Federal Circuit infringement appeals involving networked thermostat, demand-response, and wireless energy management patents in the smart home and grid-edge technology sector.
What this case signals for the smart thermostat IP landscape
EcoFactor's coordinated multi-appeal docket against Google signals active and continuing enforcement of networked thermostat and energy management patents.
No Federal Circuit merits ruling: these four patents remain in play
The voluntary dismissal means no appellate court has ruled on the validity or infringement scope of US8412488B2, US8180492B2, US8738327B2, or US10534382B2 through this proceeding. Companies in the smart thermostat, demand-response, or wireless sensor space should treat these patents as active enforcement risks until a substantive ruling is issued.
Related appeal 2023-1101 warrants close monitoring
The dismissal order explicitly directed the parties to respond to the oral argument notice in Appeal No. 2023-1101. This related appeal was still active as of 30 November 2023. A merits ruling there could directly affect the enforceability of EcoFactor's patent portfolio and establish Federal Circuit precedent relevant to the entire networked thermostat sector.
EcoFactor v Defendant — key questions answered
Appeal No. 22-1974 was voluntarily dismissed under Fed. R. App. P. 42(b) on 30 November 2023. The recorded basis of termination is Voluntary dismissal. Each side was ordered to bear its own costs. No merits ruling on the underlying patent infringement claims was issued by the Federal Circuit.
EcoFactor asserted four U.S. patents: US8412488B2, US8180492B2, US8738327B2, and US10534382B2. These cover systems and methods for using networked thermostats to verify peak demand reduction and for using wireless devices as sensors in energy management systems.
A Rule 42(b) dismissal is a voluntary withdrawal of the appeal. The Federal Circuit issues no ruling on validity, infringement, or claim construction. The underlying patents are not adjudicated and retain whatever enforceability they held before the appeal. The specific terms, including whether the dismissal is with or without prejudice, are not disclosed in the available record.
Yes. The same order that dismissed Appeal No. 22-1974 also dismissed Appeal No. 22-1971 under Fed. R. App. P. 42(b) on identical terms, with each side bearing its own costs. A third related appeal, No. 2023-1101, was still active as of the dismissal order and the parties were directed to file responses to its oral argument notice.
Appeal No. 22-1974 was filed on 30 June 2022 and closed on 30 November 2023, a duration of 518 days. This is consistent with a mid-length Federal Circuit appeal proceeding that ended by voluntary dismissal rather than a merits decision.
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