Background
Ollnova Technologies sued ecobee Technologies — maker of popular smart thermostat products — for infringing four patents directed to improvements in wireless communications used in building automation systems (BAS). The patents address technical challenges that arise when replacing wired connections with wireless networks in building HVAC and control systems, including limited bandwidth, high power consumption from continuous monitoring, and susceptibility to communication errors and data loss.
After a jury trial in the Eastern District of Texas before Judge Gilstrap, the jury returned a verdict finding ecobee infringed at least one of the asserted patents and awarding Ollnova $11.5 million in lump-sum damages covering the life of the patents. However, the verdict form — which the district court drafted over the parties’ objection — posed only a single combined infringement question covering all four patents, while breaking invalidity into patent-by-patent determinations. The jury also found the ‘282 patent’s asserted claims invalid.
Both parties appealed. ecobee challenged the verdict form, the denial of its §101 eligibility motions, non-infringement of the ‘371 patent, and Daubert exclusions. Ollnova cross-appealed the district court’s limitation on prejudgment interest.
The Court’s Holding
Writing for the panel, Judge Chen vacated the infringement and damages judgments and remanded for a new trial, finding the combined verdict form constituted reversible error. Because the jury found the ‘282 patent invalid but answered only a single infringement question covering all four patents, the court could not determine whether the $11.5 million award was attributable to patents the jury found valid or to the invalidated patent. This made it impossible to reconcile the verdict or conduct meaningful appellate review.
On patent eligibility under 35 U.S.C. §101, the court reached a split result. It affirmed the district court’s determination that the ‘887 and ‘371 patents are not directed to abstract ideas at Alice step one, finding they claim specific technical solutions to wireless communication challenges — aggregating change-of-value data and implementing redundancy mechanisms — rather than abstract concepts. However, it vacated and remanded on the ‘495 patent for further analysis at Alice step two, where the district court must assess whether the patent’s claims contain an inventive concept sufficient to transform what appears to be an abstract idea of “controlling components using information from two separate networks” into a patent-eligible application.
The court affirmed the denial of ecobee’s motion for judgment as a matter of law on non-infringement of the ‘371 patent, finding sufficient evidence supported the jury’s implied finding of infringement.
Key Takeaways
- A combined verdict form that lumps infringement of multiple patents into a single question is reversible error when the jury separately finds one of those patents invalid — the resulting verdict cannot be reconciled or meaningfully reviewed on appeal.
- Patent claims directed to specific technical solutions for wireless building automation — such as aggregating change-of-value data and implementing redundancy mechanisms to mitigate communication failures — can survive Alice step one as non-abstract.
- When §101 eligibility has factual disputes at Alice step two, the case must go to the jury rather than being resolved on a motion to dismiss, requiring development of a factual record on whether claimed elements are well-understood, routine, and conventional.
Why It Matters
This case provides important guidance on two fronts. First, it reinforces that district courts must use patent-specific verdict forms in multi-patent cases — a lesson with practical implications for complex patent trials where efficiency tempts courts to consolidate jury questions. The $11.5 million verdict evaporated because the verdict form made it impossible to tell which patents drove the damages.
Second, the §101 analysis offers a useful roadmap for IoT and building-automation patents. The Federal Circuit’s affirmance that claims addressing specific wireless communication problems (bandwidth, power, data loss) satisfy Alice step one at least gives patent holders in this space a framework for drafting claims that emphasize technical solutions rather than generic data-handling concepts. For smart-home and IoT companies, the remand on the ‘495 patent signals that broad claims reciting two networks with different protocols may still face eligibility challenges unless grounded in specific inventive implementations.