Tesla Vice President Bonne Eggleston explained the latest updates in a trade secret theft case the company has against a former manufacturing equipment supplier, Matthews International.<\/p>\n
Back in 2024<\/a>, Tesla had filed a lawsuit against Matthews International, alleging that the firm stole trade secrets about battery manufacturing and shared those details with some of Tesla\u2019s competitors.<\/p>\n Early last year, a U.S. District Court Judge denied Tesla\u2019s request to block Matthews International from selling its dry battery electrode (DBE) technology across the world<\/a>. The judge, Edward Davila, said that the patent for the tech was due to Matthews\u2019 \u201cextensive research and development.\u201d<\/p>\n Tesla is suing a former supplier for trade secret theft<\/a><\/p>\n<\/p>\n The two companies\u2019 relationship began back in 2019, as Tesla hired Matthews to help build the equipment for its 4680 battery cell. Tesla shared confidential software, designs, and know-how under strict secrecy rules.<\/p>\n Fast forward a few years,<\/a> and Tesla reportedly caught Matthews copying the tech into machines that were sold to competitors, claiming they lied about doing so for three years, and continued to ship it. That is when Tesla chose to sue Matthews in July 2024 in Federal court, demanding over $1 billion in damages due to trade secret theft.<\/p>\n Now, the latest twist, as this month, a Judge issued a permanent injunction\u2014a court order banning Matthews from using certain stolen Tesla parts or designs in their machines. Matthews is also officially \u201cliable\u201d for damages. The exact amount would still to be calculated later.<\/p>\n Bonne Eggleston, a VP for Tesla, said on X today that Matthews is a supplier who \u201cexploited customer IP through theft or deception,\u201d and has no place in Tesla\u2019s ecosystem:<\/p>\n Buyer beware: Matthews International stole Tesla\u2019s DBE technology and is now subject to an injunction and liable for damages.<\/p>\n During our work with Matthews, we caught them red-handed copying our technology\u2014including proprietary software and sensitive mechanical designs\u2014into\u2026 https:\/\/t.co\/Toc8ilakeM<\/a><\/p>\n \u2014 Bonne Eggleston (@BonneEggleston) March 10, 2026<\/a><\/p>\n Tesla calls this a big win and warns other companies: \u201cBuyer beware\u2014don\u2019t buy from thieves.\u201d<\/p>\n Matthews hit back with a press release claiming victory. They say an arbitrator ruled they can keep selling their own DBE equipment to anyone and rejected Tesla\u2019s request for a total sales ban. They call Tesla\u2019s claims \u201cnonsense\u201d and insist their 20-year-old tech is independent. Both sides are spinning the same narrow ruling: Matthews can sell their version, but they\u2019re blocked from using Tesla\u2019s specific secrets<\/a>.<\/p>\n What are Tesla\u2019s Current Legal Options<\/p>\n The case isn\u2019t over\u2014it\u2019s moving to the damages phase. Tesla can:<\/p>\n Push forward in court or arbitration to calculate and collect huge financial penalties (potentially $1 billion+ if willful theft is proven). Tesla could also refer evidence to federal prosecutors for possible criminal trade-secret charges (rare but serious). Settlement is always possible, but Tesla\u2019s fiery public response suggests they want full accountability.<\/p>\n This isn\u2019t just corporate drama. It shows why trade secrets matter even when Tesla open-sources some patents, confidential know-how shared in trust must stay protected. For the EV industry, it\u2019s a reminder: steal from your biggest customer, and you risk losing everything.<\/p>\n \t\t\t\t\t\t\t\t\t\t\t\t\t
\nEnforce the permanent injunction with contempt charges, fines, or even jail time if Matthews violates it.
\nChallenge Matthews\u2019 new patents that allegedly copy Tesla\u2019s work, asking courts to invalidate them or add Tesla as co-inventor.
\nSeek extra damages, lawyer fees, and possibly punitive awards under the federal Defend Trade Secrets Act and California law.<\/p>\n