Sentronics filed Texas patent lawsuit against Allengra over Formula 1 fuel-flow meters
NXTbets Pro | Published On: October 20, 2026
Patent lawsuit filed
Sentronics Holdings Ltd. filed a federal patent lawsuit in Texas against Allengra GmbH, accusing the German company of infringing its fuel-flow meter patent. The dispute centered on Formula 1 hardware that sat at the heart of race operations, because Allengra supplied the fuel-flow meters used by every Formula 1 team. Sentronics said the meters infringed U.S. Patent No. 11,391,609, which covered a fuel-flow measurement method that used phase-modulated ultrasonic signals. The company filed the case after concluding that Allengra’s product crossed the line into infringement, and it pressed the issue in a U.S. court. The complaint placed two companies with direct ties to Formula 1 in conflict over one of the series’ more technical pieces of equipment, with Sentronics alleging that the meter design infringed protected technology. Sentronics said it had performed testing that backed up its claim and formed the basis for the lawsuit. That made the case more than a simple patent dispute between manufacturers. It reached into a core regulatory function in the sport.
Formula 1 meters
Sentronics’ lawsuit also framed the battle as a continuation of its own history with Formula 1’s fuel-flow technology. The company said it was the series’ former fuel-flow meter supplier and that it had provided the FIA with meters for several years before Allengra won the next contract to supply the equipment. In the complaint, Sentronics presented itself as a company that knew the category well and said it had already put the governing body on notice about the patent. It said it warned Allengra about the patent and later repeated that warning after further concerns about the meters. Sentronics also alleged that Allengra knowingly encouraged use of the meters at U.S. races. That allegation raised the stakes beyond a standard dispute over product design, because it suggested the company understood the U.S. market exposure tied to the equipment. The filing did not stop at ownership of the technology. It also tried to draw a line from the meter design to the way the product was put into service in Formula 1. Sentronics said late testing confirmed the alleged infringement, giving it a factual basis for the suit. The company’s position was that the meters were not just similar to its patented method, but that Allengra had been warned about the patent claim. That set up a sharp clash over who controlled the technology used to measure fuel flow in Formula 1.
Injunction sought
Sentronics asked the court for strong relief, including a permanent injunction that would bar the sale or supply of the meters in the United States. It also sought damages, lost profits and royalties, and said triple damages could be on the table if it proved willful infringement. That combination gave the case both a defensive and financial edge, since Sentronics sought to stop future sales while also reaching back for compensation tied to past use. The company requested a jury trial, which signaled that it wanted the dispute decided in a courtroom rather than through private settlement alone. That request placed pressure on Allengra’s U.S. business interests. Even so, the case was not expected to affect the United States Grand Prix in Austin because Sentronics was not seeking an emergency order to stop the meters from being used. That detail limited the immediate sporting impact, but it did not reduce the broader significance of the filing. The legal fight turned on whether the company’s fuel-flow technology infringed Sentronics’ patent rights. The outcome could shape how one of the sport’s most important measurement tools was sold, supplied and protected going forward.
