Apple sues OpenAI over alleged trade secret theft, names 400 ex‑Apple

Apple filed a lawsuit in the U.S. District Court for the Northern District of California accusing OpenAI and two former Apple engineers of misappropriating Apple’s confidential hardware designs, alleging a coordinated effort that involved more than 400 ex‑Apple employees now at OpenAI【1】. The case threatens OpenAI’s nascent hardware business and could reshape the AI‑hardware rivalry between the two firms.

Allegations and alleged methods

Apple’s complaint says Tang Tan, a former VP of product design who helped shape the iPhone, Apple Watch and iPod, used insider knowledge to interview Apple candidates, prompting them to bring actual Apple components and CAD files to OpenAI interview sessions【1】. The filing also alleges that Chang Liu, a senior system electrical engineer who left Apple in January 2026, downloaded a “compilation of technical files” exceeding a thousand pages that detailed circuit‑board manufacturing processes【1】. Apple claims Liu further coached a recruiting candidate on which confidential materials to study before her OpenAI interview. The suit contends that OpenAI failed to respond when Apple raised concerns in February, and that the company even enlisted a trusted Apple supplier to apply Apple’s proprietary metal‑finishing technique without permission【1】.

Competitive context

The lawsuit arrives as OpenAI pushes into consumer hardware, positioning a “new way to interact with AI” that could extend beyond traditional speakers and screens【3】. Apple, which has been integrating OpenAI’s models into Siri, is simultaneously developing its own AI features and hardware, making the alleged theft a direct challenge to its competitive edge. The filing notes that OpenAI’s hardware ambitions rest on “the shakiest of foundations” due to the alleged reliance on Apple’s stolen secrets【3】. With more than 400 former Apple staff now at OpenAI, the case underscores a broader talent migration that could accelerate OpenAI’s hardware roadmap while eroding Apple’s proprietary advantage.

Legal and market implications

Apple seeks injunctive relief and damages, signaling a willingness to use litigation to protect its intellectual property as the AI‑hardware race intensifies【1】. The suit also follows Bloomberg reports that OpenAI was preparing legal action against Apple over its Siri‑ChatGPT integration, though Apple says that partnership is not part of the current filing【1】. If the court grants a preliminary injunction, OpenAI may be forced to halt any hardware development that relies on the contested information, potentially delaying its consumer device launch, which analysts have speculated could target a 2028 smartphone release【1】.

What to watch

• Court filings: Any motions for a preliminary injunction or settlement discussions could indicate how quickly OpenAI must adjust its hardware roadmap.
• OpenAI product timeline: Updates on OpenAI’s first consumer hardware device, especially any announced launch dates, will reveal whether the lawsuit materially impacts its schedule.
• Talent flow: Further disclosures about the number of former Apple employees at OpenAI may signal the depth of knowledge transfer and potential future disputes.

The lawsuit highlights the high stakes of AI‑driven hardware competition, where proprietary design know‑how can become a battlefield as quickly as algorithms. Whether the case curtails OpenAI’s hardware ambitions or forces Apple to tighten its employee exit protocols remains to be seen.