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The Fourth Law is a robotics autonomy company
Autonomous robots will transform dozens of multi-trillion dollar industries over the next 10 years.
But now is the time to focus on defense.
We bring together leading engineers, scientists, and managers to strengthen the defense capabilities of Ukraine and the Free World.
Our first products are autonomy systems for FPV drones and autonomous drones that are already defending our country.
Autonomy Modules
Autonomy Drones
TFL-1 autonomy modules
Terminal guidance & cruise
– AI tracks the target’s outline and guides the drone to its center
– The highest hit rate among similar systems
– Integrated with FPV drones from major manufacturers
Lupynis-10-TFL-1
First-level autonomy FPV
– Strong 10-inch drone with autonomy
– 30 km+ with 1 kg of payload
– We modify the characteristics according to the needs of the end-user
– Codified, has a NATO code
Zerov-8
Autonomous interceptor
– An aerial target interceptor with intelligent detection
– Detects targets at distances 2–3× greater than comparable systems
– Up to 326 km/h speed for intercepting high-speed UAVs
Get involved
We are actively looking for exceptional professionals, defense procurement offices, and investors to strengthen the defense of Ukraine and the Free World, and to build the next generation of robotic systems.
R&D requires significant funding. Every dollar we earn is reinvested to create better products.
Work with us
– Engineers and scientists
– Business development managers
– Recruiters, logisticians, collectors, and everyone who wants to work
Order our products
– Military units and brigades
– Government buyers and Charitable foundations
– Drone manufacturers
Invest in our R&D
– Investors
– Companies with co-development funding
– Grantors
– Philanthropists
News
The Fourth Law presents a video of strikes against a full spectrum of targets — on land, water, and in the air
Kyiv, Ukraine – May 13, 2026 – The Ukrainian defense company The Fourth Law has presented a world-first exclusive video demonstrating the mass deployment of AI-powered terminal guidance on the battlefield across a full spectrum of targets: on land, on water, and in the air.
Drone Autonomy 2026: scaling solutions for the frontline
The Fourth Law and IRON, brought together those shaping the future of autonomous solutions on the frontlines: engineers, military personnel, manufacturers, investors, and government officials.
"The Fourth Law" and "Ukrainian Armor" Codify UB60D Drone with TFL-1 Autonomy Module
Ukrainian defense companies The Fourth Law (TFL) and Ukrainian Armor officially announce the successful codification of the UB60D 8-inch FPV drone equipped with the TFL-1 autonomous terminal guidance system, which increases strike effectiveness by 2-4 times.
The Fourth Law Unveils Zerov-8: A Game-Changing Autonomous Interceptor Against Shaheds
Ukrainian defense company The Fourth Law has officially introduced the Zerov-8, an autonomous interceptor designed to effectively counter enemy unmanned aerial vehicles (UAVs).
The Fourth Law and Odd Systems Host "Autonomy and Sovereignty" Event in Kyiv to Redefine the Future of Defense Tech
On February 26, the companies The Fourth Law and Odd Systems held "Autonomy and Sovereignty," a closed-door event in Kyiv for key industry stakeholders.
The Fourth Law Secures Strategic Investment to Accelerate Drone AI Development for Ukraine
The Fourth Law (TFL), a Kyiv-headquartered defense technology company, has secured a new round of funding backed by Axon (Nasdaq: AXON), the US public safety technology group.
The Lupynis-10-TFL-1 Autonomous Drone Is Available on DOTChain and Brave1 Market
The flagship Lupynis-10-TFL-1 drone with terminal guidance is now available on the DOTChain and Brave1 Market platforms. Military units can purchase the UAV using E-points, and for each successful target engagement carried out by drones equipped with the terminal guidance system, service members receive an additional E-point.
VYRIY PRO 10 drones with terminal guidance system TFL-1 now available on DOT-Chain by the Defense Procurement Agency and Brava1 Market with E-Points
VYRIY FPV drones equipped with the terminal guidance system developed by The Fourth Law are now available for procurement on DOT-Chain by the Defense Procurement Agency and for purchase under the Army of Drones.Bonus program on Brave1 Market.
Vyriy and The Fourth Law launch mass production of autonomous drones
Kyiv, Ukraine; 15 September 2025 – Vyriy, one of Ukraine’s largest drone manufacturers, and The Fourth Law, a leading Ukrainian developer of autonomy systems, announced the start of mass production of drones with terminal guidance.
Lupynis-10-TFL-1 and Autonomy Module TFL-1 received NATO codification
Kyiv, Ukraine; 1 September 2025 – UAS Lupynis-10-TFL-1 and Module TFL-1 are already codified by National Guard of Ukraine and Ukrainian Ministry of Defense
The Fourth Law, makers of massively scalable AI systems for FPV drones, announces its first round of funding and unveils its flagship product TFL-1
Kyiv, Ukraine; 10 July 2025 – The Fourth Law (TFL / Четвертий Закон), a defense tech company headquartered in Kyiv, Ukraine today announced that it raised funding from a group of venture funds...
