OpenAI's IPO at Risk as Apple Suit Alleges 400+ Employees Stole Trade Secrets

For a startup on the cusp of an IPO, a high-stakes trade secret lawsuit from the world’s most valuable company could not come at a worse time. Apple’s suit against OpenAI, alleging that over 400 former Apple employees have been involved in stealing confidential product information, threatens to muddy the waters just as the AI darling prepares to tap public markets. With chief hardware officer Tang Tan—a key figure in Apple’s product design legacy—at the center, the case raises red flags for investors about the provenance of OpenAI’s planned hardware line.

Apple has launched a legal assault against OpenAI, filing a trade secret theft lawsuit in the Northern District of California on July 10, 2026. The suit accuses the artificial intelligence startup and its chief hardware officer, Tang Tan, of orchestrating a coordinated campaign to steal confidential information about upcoming Apple products. This marks a dramatic rupture in a partnership that once saw OpenAI’s ChatGPT deeply integrated into Apple’s Siri and Apple Intelligence platform.

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This marks a dramatic rupture in a partnership that once saw OpenAI’s ChatGPT deeply integrated into Apple’s Siri and Apple Intelligence platform.

The complaint alleges that OpenAI encouraged current and former Apple employees to share product components, drawings, and other proprietary materials. At the heart of the case is the massive migration of talent: according to Apple, more than 400 former Apple workers are now employed at OpenAI, spanning all levels from technical staff to the chief hardware officer. Tang Tan, who previously served as Apple’s vice president of product design and led development of the iPhone, Apple Watch, and AirPods, is the most prominent figure named. Apple asserts that Tan’s move to OpenAI—where he now heads hardware—was part of a deliberate effort to accelerate the AI company’s push into consumer devices.

OpenAI responded through a spokesperson, saying it has “no interest in other companies’ trade secrets” and that it remains focused on building innovative technology. However, the timing is sensitive. OpenAI is reportedly preparing for an initial public offering in the coming months, and a high-profile legal dispute with the world’s most valuable company could unsettle investors and complicate valuation. Apple, meanwhile, is demanding that OpenAI immediately cease any use of its proprietary information and destroy all related materials, and it is seeking a jury trial.

The backdrop includes a growing rivalry that has been simmering for over a year. The partnership between the two companies—which baked ChatGPT into Apple’s ecosystem—has soured as OpenAI enlisted former Apple design legend Jony Ive to develop its own line of devices. Apple views this as a direct threat in the burgeoning AI hardware space. The lawsuit thus goes beyond mere talent poaching; it strikes at the integrity of the information flows that enable one of tech’s most secretive companies to maintain its competitive edge.

The implications are far-reaching. For the AI industry, the case could set new legal boundaries regarding the knowledge that employees can carry from one company to another, particularly when that knowledge involves highly confidential hardware designs. It also raises questions about the defensibility of trade secrets in the age of rapid employee mobility and the blurred lines between software and hardware. If Apple prevails, it may chill the kind of aggressive talent acquisition that has fueled the AI boom, forcing startups to be more cautious about hiring from rivals. For OpenAI specifically, the suit threatens to derail its consumer hardware ambitions at a critical juncture, potentially delaying or redirecting its device roadmap.