Apple Inc. (AAPL) filed a bombshell federal lawsuit against OpenAI on Friday, accusing the ChatGPT creator of orchestrating a systematic campaign to steal trade secrets in a bid to accelerate its own consumer hardware ambitions. The legal action, lodged in the U.S. District Court for the Northern District of California, marks a stunning collapse of what was once a high-profile strategic partnership and threatens to reshape the competitive landscape of the burgeoning AI device market.
The suit names OpenAI, its Chief Hardware Officer Tang Tan, and former Apple electrical engineer Chang Liu as defendants. It also names io Products, a hardware startup founded by Tan in collaboration with former Apple design icon Jony Ive that was acquired by OpenAI for a reported $6.4 billion. Notably, Ive is not a defendant in the case.
In its complaint, Apple pulls no punches, alleging that OpenAI engaged in a “coordinated pattern of misconduct at an institutional level.” The lawsuit states that “OpenAI and its cohorts, led at least in part by former Apple employees, have recruited candidates from Apple, extracted their knowledge of Apple’s sensitive and confidential information, and then continued to exploit that knowledge once they arrived.”
Apple asserts that OpenAI’s entire hardware venture is fundamentally tainted. “OpenAI’s nascent hardware business now rests on the shakiest of foundations, rotten to its core by its illegal reliance on misappropriated trade secrets,” the complaint reads.
The Core Allegations: A Blueprint for Theft
The lawsuit paints a detailed picture of how OpenAI allegedly pilfered Apple’s proprietary information. A central figure is Tang Tan, who spent 24 years at Apple as a vice president of product design, overseeing the development of the iPhone, Apple Watch, and AirPods. Apple claims Tan used his intimate knowledge of the company to extract confidential data.
Specifically, Apple alleges that Tan used internal Apple project codenames during interviews with candidates who still worked at the company. He is also accused of instructing these prospective hires to bring “actual parts” to interviews for “show and tell” sessions, effectively turning the hiring process into an intelligence-gathering operation. Before leaving Apple, the suit claims Tan emailed himself sensitive information about Apple’s suppliers.
The other named defendant, Chang Liu, left Apple in January after eight years as a senior electrical engineer. Apple alleges that Liu failed to return his company-issued laptop and subsequently exploited a previously unknown authentication bug to access Apple’s internal shared network folders. According to the filing, Liu downloaded dozens of confidential hardware files, including details on unreleased products, engineering presentations, technical specifications, and proprietary project data. The suit further claims Liu coached a former Apple colleague he was recruiting to OpenAI on how to evade Apple’s security protocols.
The complaint goes beyond individual actions, alleging a top-down, institutionalized effort. Apple claims OpenAI systematically advised departing employees on how to avoid triggering a “direct send-out” procedure—being immediately escorted from the premises—so they could maintain access to confidential information during a standard two-week notice period. The company also alleges OpenAI instructed job candidates not to disclose their next employer’s name to further sidestep security measures.
Apple further contends that OpenAI leveraged the stolen knowledge to mislead its supply chain. The suit claims OpenAI asked a manufacturing partner to execute a specific, Apple-invented metal-finishing technique, leading the partner to believe it was authorized by Apple.
From Strategic Alliance to Courtroom Battle
The lawsuit represents a dramatic and bitter end to a relationship that was celebrated just two years ago. In 2024, Apple unveiled a landmark partnership at its Worldwide Developers Conference (WWDC), integrating OpenAI’s ChatGPT deeply into its ecosystem. OpenAI CEO Sam Altman attended the event, and Apple executives publicly lauded the AI firm. The integration allowed users to call upon ChatGPT through Siri and use its capabilities within features like Visual Intelligence and Image Playground.
However, tensions had been simmering for months. The talent war between the two companies intensified dramatically, with Apple’s lawsuit noting that over 400 former Apple employees now work at OpenAI. This exodus reportedly extended to top management, including the head of Apple’s smart glasses division who left for OpenAI just last month.
The relationship was further strained by business disagreements. Reports previously surfaced that OpenAI had considered legal action against Apple, believing the partnership failed to deliver expected commercial benefits and evaluating a potential breach-of-contract notice. Apple’s decision to turn to Google’s Gemini AI to power its next-generation Siri capabilities, sidelining ChatGPT for a core future product, underscored the growing rift.
Now, the conflict has escalated into a full-blown legal war. Apple says it first reached out to OpenAI in February to raise concerns uncovered during an internal investigation but received no response. “This lawsuit and the discovery process are needed to expose and begin to remedy the pervasive theft of Apple’s trade secrets,” the suit states. An Apple spokesperson said the company will “always defend our teams’ hard work and innovations, and we are taking all appropriate steps to do so.”
OpenAI did not immediately respond to requests for comment from multiple media outlets, including the Boston Globe, Tom’s Hardware, and Yahoo Finance.
The High-Stakes Race for AI Hardware
The lawsuit throws a spotlight on the intensifying race to define the next generation of consumer hardware, a market often described as the “post-smartphone” era. Apple is reportedly exploring a range of AI-powered devices, including smart glasses, a wearable pendant, and AirPods equipped with cameras. OpenAI has been more secretive about its plans, stating only that it is researching new ways for people to interact with AI beyond “traditional products and interfaces,” though reports have suggested a HomePod-style smart speaker is in development.
This legal clash is not happening in a vacuum. It mirrors a separate, high-profile trade secret dispute in the AI industry between Elon Musk’s xAI and OpenAI, in which xAI leveled similar accusations of employee poaching and confidential information theft. A federal judge dismissed that case in June, finding insufficient evidence. The Apple case, however, appears to be built on more granular and specific claims of digital evidence and coordinated behavior.
Apple is seeking a jury trial, along with damages, attorney’s fees, and a series of injunctions. Crucially, the company is demanding that OpenAI be ordered to stop using any of Apple’s trade secrets and to destroy all related materials. It also wants OpenAI to redesign any upcoming products that may incorporate the allegedly stolen technology, a demand that could significantly delay or derail OpenAI’s hardware roadmap. The lawsuit also has potential implications for OpenAI’s reported plans to go public, adding a layer of legal and reputational risk to its S-1 filing process.
The case, officially titled Apple Inc. v. Liu et al, is case 5:26-cv-07078 in the United States District Court for the Northern District of California. The litigation promises to be a landmark battle over intellectual property in the AI age, potentially dragging some of the tech industry’s most famous designers and engineers into court to testify about the origins of the next computing platform.