StimScience, a sleep tech startup, has raised $10 million in a seed extension round, on June 10, 2025, for its AI-powered headband, Somnee. Investors include Khosla Ventures, TIME Ventures, the Orlando Magic ownership group (DeVos Family), and others. Somnee uses electroencephalogram (EEG) to monitor brain activity and provide personalized stimulation to improve sleep onset and quality.
The new funding will be used to launch a second-generation device with SmartSleep AI, which is currently being tested with NBA teams. Somnee is one of the companies selected for the NBA’s 2025 Launchpad program and is exploring opportunities in the broader sleep aid market, including potential partnerships in sports, workplace wellness, and healthcare.
The hidden cost of sleepless nights
According to the Centers for Disease Control and Prevention (CDC), about one in three U.S. adults report not getting the recommended seven or more hours of sleep per night. Poor sleep has been linked to an increased risk of chronic conditions such as obesity, diabetes, cardiovascular disease, and depression, as well as reduced cognitive performance and productivity. The economic impact is also significant, with estimates suggesting that insufficient sleep costs the U.S. economy over $400 billion annually due to lost productivity, workplace accidents, and healthcare expenses.
StimScience and the Somnee Smart Sleep Headband
Founded in 2017 by UC Berkeley scientists Drs. Matthew Walker, Robert Knight, Rich Ivry, and Ram Gurumoorthy, the company introduced its flagship product, the Somnee Smart Sleep Headband to market in 2022. The device has since won GQ’s 2024 Fitness Awards as “Best Sleep Tech”, Fast Company’s 2024 “Next Big Things in Tech”, and 2025 Men’s Journal Tech Award.
The headband is the product of more than three years of research conducted in StimScience’s Berkeley sleep laboratory, along with an over 1,500-night home pilot study. Here are some of their their studies that contributed to the development of Somnee:
Somnee’s lab results showed that the time to fall asleep was cut by half, delivering about 20-40 minutes of additional sleep when personalized stimulation was applied, and proved to be over 4x more effective than that of Melatonin, with about a 13% improvement in sleep efficiency, and about 17 minutes of added sleep duration.
The design of the headband is captured in U.S. Design Patent No. D1,049,391, which includes a head strap, a ladder lock for size adjustment, and electronic components at the front. Under the leadership of CEO Tim Rosa, StimScience continues to develop technology driven tools intended to address sleep challenges within the broader consumer health.
The clinical-grade device combines EEG brain mapping, artificial intelligence, and personalized closed-loop neurostimulation. During the first week of use, it maps a user’s brainwave patterns and then delivers a 15-minute nightly session designed to support restorative sleep without requiring overnight wear.
More of the headband’s technologies will be revealed as we explore the StimScience’s patenting activity of StimScience, and the key patents behind the Smart Sleep Headband.
StimScience: Patenting Activity
StimScience filed its first patents in 2017 to protect the core technologies underlying its diagnostic and electrotherapy system. The patent families are as follows:
| Patent Family | Title | Priority Date | Filing Date |
| US20190076046A1 | Systems, methods, and devices for closed loop control | 2017-09-13 | 2018-09-13 |
| US11801004 | Systems, methods, and devices for intracranial measurement, stimulation, and generation of brain state models | 2017-10-31 | 2019-01-24 |
| US10898706 | Systems, methods, and devices for brain stimulation and monitoring | 2017-10-31 | 2018-10-29 |
A notable shift occurred in 2020, when StimScience expanded its patent portfolio with a wave of new applications. These covered a broader range of technologies, including biomarker shaping, sleep profile enhancements, sleep intervention methods, and the development of sleep state models based on a user’s sleeping stage patterns. In 2021, the company filed two applications: one for a design patent and another in Europe related to sleep age implementation. The most recent filing was in 2022, aligning with the launch of the Somnee Smart Sleep Headband, focusing more on the personalization of stimulation.
StimScience: Top Jurisdictions
Most of StimScience’s patents have been filed in the United States, reflecting both its home base and the company’s focus on protecting innovations in its primary market. Outside the U.S., StimScience has also pursued filings through the European Patent Convention (EPC) system, signaling its intention to secure coverage across multiple European countries. This strategy highlights the company’s recognition of Europe as a growing market of wearable sleep trackers, where consumer adoption of health and wellness devices continues to rise.
StimScience: Top Law Firms
StimScience has been mostly represented by Schwegman Lundenberg & Woessner. It has also worked with UK-based firms such as Hepworth Browne and Murgitroyd & Company for applications under the EPC system. California-based Kwan & Olynick has contributed to additional U.S. filings. This distribution reflects a strategic approach to securing strong patent protection in both U.S. and European markets through partnerships with regionally established firms.
StimScience: Top Technology Areas
StimScience’s patent portfolio is largely concentrated in medical technology classifications. The majority fall under A61B, reflecting the diagnostic functions associated with the Somnee headband. This is followed by A61M, which covers devices integrated with or applied to the body. The systems’ use of digital computing and electrotherapy is reflected in classifications, G16H and A61N, respectively, also make up part of the technology. Rounding out the classifications are G06F and H04L, covering digital data processing and communication technologies transmission, underscoring the role of computation and signal transmission in the device’s operation.
Somnee Smart Sleep Headband patents
The Somnee Smart Sleep Headband is designed to improve sleep quality through advanced neurotechnology and adaptive software. Unlike traditional sleep aids, it combines noninvasive sensing and stimulation to support natural sleep processes in a personalized way. This innovation is made possible by a portfolio of patents that safeguard its core technologies, with fundamental patents highlighted in the following sections.
Electronic solutions to achieve quality sleep
U.S. Patent No. 11,986,649, titled “Systems, methods, and devices for brain stimulation and monitoring”, describes a closed-loop system that combines real-time brain monitoring with targeted stimulation to enhance sleep quality. The invention focuses on detecting and influencing slow waves and spindles during non-rapid eye movement (REM) sleep, which are closely linked to memory consolidation and restorative rest. By synchronizing these brain rhythms, the system aims to improve both sleep depth and the overall sleep experience.
To achieve this, the patent uses a wearable interface such as a headband, embedded with sensors like EEG electrodes. These sensors capture brain signals and transmit them to a processing unit, which analyzes the data to extract brain activity parameters and generate a model of the user’s brain state. Based on this model, the system determines the optimal timing and intensity of stimulation.
Stimulation is delivered through noninvasive approaches, such as transcranial direct current stimulation (tDCS), which applies a very low electrical current to the scalp through the electrodes. Instead of causing neurons to fire, where neurons generate electrical signals to communicate with other cells, tDCS modulates their excitability, making brain networks more or less likely to activate. In this system, waveforms are designed to align with the brain’s natural rhythms, such as slow waves in deep sleep. The device can operate in an open-loop mode, where stimulation follows preset timing, or in a closed-loop mode, where stimulation adapts in response to real-time measurements.
The patent also notes potential applications beyond sleep, such as identifying markers of unconsciousness, supporting anesthesia monitoring, or exploring therapeutic uses related to waking and neurological conditions.
U.S. Patent No. 11,986,649 was filed on December 17, 2020, and was granted on May 21, 2024. The patent listed Anantha K. Pradeep as the inventor.
Personalizing the sleeping experience
U.S. Patent No. 11,654,258, titled “Systems, methods, and devices for measurement, identification, and generation of sleep state models”, describes a method of creating individualized sleep models using data collected from wearable devices like the headband. Neural signals are captured through the electrodes, which are then processed to create a personalized sleep state model that reflects the user’s unique sleep architecture. As additional data are collected, the model is updated to refine and personalize interventions based on the user’s evolving specific patterns.
The system analyzes incoming neural data to identify specific stages of sleep such as N1, N2, N3, and REM. Using this information, the system constructs a personalized sleep state model that evolves over time as more data are collected. The adaptive model also enables the system to respond in real time.
The patent was filed on August 21, 2020, and was granted on May 23, 2023, with Ram Gurumoorthy listed as the inventor.
Both U.S. Patents No. 11,986,649 and 11,654,258 were represented by the legal team of Schwegman Lundberg & Woessner, with Michael Schwegman, Steven Lundberg, Bradley Forrest, et al.
The future with the second-generation Somnee
With the anticipated launch of the Somnee second-generation headband, the technology could open more adaptive and personalized approaches to sleep support. Integrating artificial intelligence with neurostimulation could enhance how sleep patterns are measured and adjusted, potentially leading to improved outcomes for users. Over time, these developments may influence the role of wearable devices in the sleep technology market and contribute to the broader integration of digital health tools into everyday wellness practices.
In addition to consumer applications, such innovations could hold value for research and clinical contexts, where more precise monitoring and targeted interventions may support the management of sleep disorders such as insomnia. As the field progresses, Somnee’s approach may help shape future directions in both consumer sleep technology and clinical sleep health solutions.
