Apple's escalating legal battle with OpenAI over alleged hardware trade-secret theft is no longer just a courtroom dispute; it arrives as a defining early test for incoming CEO John Ternus, whose entire career at Apple has been built around the proprietary silicon and device engineering now at the center of the case.
Why it matters
The lawsuit could force two of the most secretive organizations in technology to expose how they recruit talent, develop hardware, and protect confidential information4. If Apple's allegations hold, the case would set a precedent for how aggressively AI labs can hire from hardware incumbents and how far trade-secret protections extend into the age of custom AI silicon. ANALYSIS For Ternus, who takes the CEO chair on Tuesday7, the outcome will shape whether Apple can defend the chip-design moat that underpins its $4.7 trillion valuation.
The big picture
Apple's lawsuit accuses OpenAI of stealing trade secrets to build an AI device1. The case revolves around three former Apple employees who recently joined OpenAI, including Chang Liu2. In its latest filing, Apple claims Liu used a confidential Apple circuit schematic in his work at OpenAI, as well as a tool that shares a name with an internal Apple engineering application6. Apple further alleges that Liu enlisted OpenAI colleague Yu-Ting Peng to help destroy evidence in June when he learned Apple was investigating him.
The MacBook at the center of the dispute, which OpenAI handed over only after weeks of delay, contained discussions about "destroying the types of forensic data Apple needs," according to Apple's filing. Apple is pushing for expedited discovery, arguing that "its trade secrets are being used and evidence is being destroyed".
OpenAI fired back on Monday. In its response to Apple's preliminary injunction request, the company called the dispute "a mess of Apple's own making, and it is trying to blame everyone else"5. OpenAI has previously said Liu accessed Apple files after leaving only to help former colleagues who asked for his assistance. The company urged the judge to deny Apple's request for a preliminary injunction, calling the allegations a "witch hunt".
Between the lines
Tuesday is John Ternus's first day at the helm of Apple, following Tim Cook's run as CEO. Ternus, a 25-year company veteran who led hardware engineering, built his reputation on custom chips, memory architecture, and device battery life. ANALYSIS The very domain expertise that earned him the top job is now the domain Apple says OpenAI raided.
Ternus inherits a company already under pressure. Apple announced price increases on MacBooks and iPads in June due to a memory crunch. Its mixed-reality headset, Vision Pro, hasn't sold well. And the relationship with OpenAI has traveled a remarkable arc: the two companies began working together in June 2024 to integrate ChatGPT into the iPhone, iPad, and Mac. OpenAI then bought io, a startup from former Apple designer Jony Ive, for $6.4 billion in May 2025. In January, Apple partnered with Google to run Apple Intelligence features on Gemini models. ◆ What began as a partnership has fractured into direct competition for hardware talent and, now, a federal lawsuit.
Cook, stepping into the role of executive chairman with a pay target of roughly $47 million, will continue to engage with "policymakers around the world"3. Ternus's compensation package is set at roughly $58 million for fiscal 2027. ◆ The pay differential itself signals the board's expectation that the harder operational job now sits with Ternus, not Cook.
What's next
The case is scheduled for a court hearing before a judge on October 1. If the judge grants Apple's request for expedited discovery, both companies could be compelled to produce internal communications about recruiting, hardware development, and data-handling practices. ◆ For OpenAI, that exposure arrives as it tries to establish credibility as a hardware maker; for Apple, it risks revealing the very engineering details it accuses OpenAI of stealing. Ternus said in April that he would carry on Apple's "values and vision". The courtroom will test how far that vision extends into protecting the silicon secrets that made the company worth $4.7 trillion.