Background
At stake in this case is one of the most consequential engineering advances in electric vehicle technology: Tesla’s dry battery electrode (DBE) process for manufacturing 4680-format cylindrical battery cells. Unlike conventional wet-process electrode manufacturing, which uses toxic solvents and requires extensive drying infrastructure, Tesla’s DBE process eliminates the solvent step entirely—reducing factory footprint, energy use, and per-cell cost while enabling higher energy density. Tesla claims this process constitutes proprietary trade secrets worth well over a billion dollars in competitive value.
Matthews International Corporation, a Pittsburgh-based industrial equipment supplier, had worked with Tesla as a vendor involved in DBE manufacturing equipment. In June 2024, Tesla filed this lawsuit alleging Matthews had misappropriated Tesla’s DBE trade secrets—acquiring technical information through its vendor relationship and then using it to develop and sell DBE equipment to Tesla’s competitors. The parties proceeded to arbitration, and in February 2026 an arbitrator issued an award that denied Tesla’s request for a broad injunction against Matthews but imposed a narrower one: prohibiting Matthews from using certain Tesla-specific parts and designs in its DBE machines.
Both sides challenged aspects of that arbitration award in federal court. Matthews contested the narrow injunction; Tesla argued other portions of the award should be revisited.
The Court’s Holding
Judge Davila partially confirmed the arbitration award. He upheld the narrow injunction that blocks Matthews International from incorporating specific Tesla components and design elements into its DBE manufacturing equipment—the portion of the award that provides targeted protection against the most direct use of Tesla’s alleged trade secrets. Courts confirm arbitration awards under highly deferential review: an arbitrator’s decision stands unless it reflects a manifest disregard of the law or exceeds the arbitrator’s authority, and the narrow injunction cleared that bar.
However, Judge Davila remanded other portions of the arbitration award for the arbitrator to reconsider. Without the full text of the order, the precise scope of the remand is not yet public, but the ruling indicates that some of the relief the arbitrator awarded—or declined to award—requires further examination on remand. The net effect is that Matthews remains subject to the narrow injunction while the arbitration proceeds on the remanded issues.
Key Takeaways
- Trade secret claims involving supplier-customer relationships remain fertile ground for injunctive relief: when a vendor gains access to proprietary process knowledge and later competes using that knowledge, courts and arbitrators can impose targeted injunctions that limit—but do not necessarily eliminate—the vendor’s ability to sell in that market.
- Partial confirmation of arbitration awards is available when some portions survive deferential review and others require reconsideration—courts do not have to take an all-or-nothing approach.
- Trade secret plaintiffs who pursue arbitration may find that arbitrators craft narrower relief than courts would; this case illustrates both the value of arbitration speed and the risk that the arbitrator’s tailored award may fall short of the plaintiff’s full ask.
- Battery-manufacturing trade secrets are attracting intense litigation as the global EV industry races to scale; this case is one of several in which major OEMs are asserting IP claims against former partners and suppliers.
Why It Matters
The electric vehicle battery supply chain is one of the most strategically contested arenas in the global economy. Tesla’s claim that it developed a proprietary dry-electrode manufacturing process—and that a vendor misappropriated it—sits at the intersection of trade secret law and industrial policy. If Tesla’s process works as advertised, the ability to keep it secret while bringing 4680-cell manufacturing to scale would be enormously valuable not just competitively but in terms of global battery supply chain leverage.
This ruling keeps the narrow injunction in place, meaning Matthews cannot immediately deploy its DBE equipment using Tesla-derived designs while the remanded issues are resolved in arbitration. For the broader market—including other EV OEMs and battery manufacturers who might contract with Matthews—the case is a reminder that vendor relationships in proprietary-process industries carry real legal risk when the technical knowledge shared under NDA later appears in a competitor’s product.
Surfaced via Law360 IP.