September 17, 2025
A Delaware federal judge ordered Neapco Holdings LLC to pay American Axle & Manufacturing Inc. nearly $1.2 million in prejudgment interest on top of a $4 million jury verdict handed down in January 2024 in a long-running patent fight, according to court papers filed Wednesday.
January 30, 2024
American Axle has been awarded $4 million at a trial in Delaware where jurors found that its vehicle driveshaft patent was infringed by Neapco, a win for the company after a controversial ruling invalidated some parts of the patent for claiming only a natural law.
July 31, 2023
A Delaware federal judge has rejected Neapco's bid to invalidate an American Axle vehicle driveshaft patent for claiming only an abstract idea, setting the stage for a trial in the lengthy case that has already spurred a high-profile U.S. Supreme Court appeal.
January 05, 2023
Auto parts manufacturer Neapco Holdings LLC told a federal judge in Delaware on Thursday that the driveshaft liners it developed don't infringe an American Axle & Manufacturing Inc. patent, and argued that the patent is invalid because it describes a "desired result" rather than a specific method for achieving it.