Sentronics Sues Allengra Over Fuel Meter Patents

The former FIA supplier alleges Allengra infringed on its ultrasonic sensor technology for motor racing.

Updated on Oct. 20, 2026 in Motorsports

Sentronics Sues Allengra Over Fuel Meter Patents

Live Poll

Do you trust that technical patent disputes will not compromise the integrity of professional sports competitions?

Sentronics Holdings Ltd has filed a patent infringement lawsuit against Allengra GmbH in the US District Court for the Western District of Texas. The suit alleges that Allengra sensors violate US patent 11,391,609.

Why it matters

Sentronics claims its patented ultrasonic technology, which measures flow by altering phase between signal pairs, was used without authorization. The company is now seeking triple damages and lost profits dating back to 2022.

Sentronics holds US patent 11,391,609, which was granted in July 2022 and serves as the core of the infringement allegations. The filing follows Allengra winning the FIA fuel flow meter contract for the 2026 to 2030 period.

The players

Sentronics Holdings Ltd

This company served as the exclusive fuel flow meter supplier for the FIA between 2018 and 2025.

Allengra GmbH

This engineering firm holds the FIA fuel flow meter supply contract for the years 2026 through 2030.

The details

The lawsuit alleges that laboratory testing performed by Sentronics in late 2024 confirmed the technology was being infringed. Sentronics is requesting a permanent injunction to block Allengra from supplying fuel flow meters in the United States.

Sentronics served as the exclusive FIA supplier from 2018 through 2025.
US patent 11,391,609 was granted to Sentronics in July 2022.
Allengra secured the FIA contract for the 2026-2030 period in November 2024.
Sentronics reportedly notified Allengra of related European patent claims in August 2025.
The federal lawsuit was officially filed on October 16, 2026.

Season Trajectory

This legal challenge complicates the supply chain for FIA-regulated racing as Allengra begins its tenure as the series' designated meter provider. The potential for a permanent ban on Allengra’s equipment could force a mid-cycle shift in technical compliance hardware for teams.

A successful court-ordered ban would immediately impact the availability of authorized fuel flow sensors for racing teams operating in the United States. Should the court find for the plaintiff, racing organizations may face emergency logistical adjustments to replace hardware.

The takeaway

This case highlights the intense intellectual property battles occurring behind the scenes in professional racing. Companies should prioritize thorough patent clearance processes before entering competitive bidding for exclusive technical contracts.