Apple filed a 41-page complaint on July 10, 2026, in the U.S. District Court for the Northern District of California, alleging that OpenAI and its newly acquired hardware subsidiary io Products systematically misappropriated trade secrets alongside two former employees. The lawsuit marks a definitive rupture in the previously collaborative relationship between the tech giants, shifting the focus from integrated AI software services to direct competition in consumer hardware. Central to Apple’s claims are Tang Tan, OpenAI chief hardware officer and a 24-year Apple veteran instrumental in the development of the iPod, iPhone, and Apple Watch, and Chang Liu, a former senior system electrical engineer. Apple alleges that Tan leveraged his institutional knowledge to recruit talent by utilizing internal project codenames during interviews and requesting candidates to bring actual hardware components for evaluation. The company further accuses Tan of distributing confidential exit protocols to departing staff and improperly forwarding supplier meeting details to a personal account. Concurrently, Apple alleges that Liu exploited a network authentication vulnerability after his January 2026 departure to download dozens of confidential hardware files directly to OpenAI, including unreleased product schematics and manufacturing specifications. The dispute extends beyond individual personnel, reflecting a broader organizational shift. OpenAI’s 2025 acquisition of io Products, a design firm co-founded by former Apple chief design officer Jony Ive, Tang Tan, and other Apple veterans, signaled the AI leader’s strategic pivot toward proprietary consumer devices. Following this acquisition, Apple reports that more than 400 former employees have joined OpenAI across technical and executive levels. Apple also alleges that OpenAI improperly shared proprietary multi-step metal surface treatment processes with third-party manufacturing partners. In response, Apple is seeking a preliminary injunction to halt the use of disputed information, the return of all confidential materials, and monetary damages. The litigation arrives at a critical juncture for both companies. For OpenAI, the lawsuit directly targets its nascent hardware division, which has been preparing to unveil a consumer AI device by late 2026 as part of a broader infrastructure push encompassing custom inference chips and data centers. While OpenAI has dismissed the allegations, stating it holds no interest in competitor secrets, the discovery process will likely scrutinize internal communications, recruitment records, and system access logs. A ruling against OpenAI could disrupt product development timelines and introduce regulatory scrutiny ahead of potential future public offerings. For Apple, the lawsuit occurs as the company navigates a leadership transition, with CEO Tim Cook preparing to step down in favor of hardware engineering chief John Ternus in September. Beyond immediate litigation strategy, Apple’s legal action aims to establish stricter industry standards regarding intellectual property protection during executive recruitment and employee offboarding. As both sides prepare for evidentiary discovery, the case will set a precedent for how major technology firms navigate talent mobility and protect trade secrets amid intensifying competition in AI hardware development.