Apple Sues OpenAI, Accusing It of Stealing Company Secrets

Apple Sues OpenAI for Trade Secret Theft: What the Complaint Alleges

Apple filed a trade-secret lawsuit against OpenAI on July 10, 2026, in the U.S. District Court for the Northern District of California, claiming the ChatGPT maker ran a scheme described in the complaint as operating "at every level, from members of its Technical Staff to its Chief Hardware Officer, and in coordination with business partners" to obtain confidential hardware designs, manufacturing processes, and supply-chain strategies. The suit also names two former Apple employees and io Products — OpenAI's hardware division. The filing, confirmed by TechCrunch, CNBC, Reuters, and the Financial Times, represents one of Silicon Valley's most dramatic ruptures in the Apple OpenAI lawsuit saga: a former partner and current rival squaring off in the race to build the next generation of AI-first devices.

From Partnership to Courtroom: How Apple and OpenAI's Relationship Evolved

Until recently, Apple and OpenAI shared one of tech's most commercially significant partnerships. At WWDC in June 2024, Apple announced it would integrate OpenAI's ChatGPT directly into Siri, making it a default feature on hundreds of millions of iPhones worldwide. For OpenAI, the deal offered extraordinary reach — access to the planet's largest installed base of premium smartphones. For Apple, it solved an urgent problem: Wall Street wanted a credible generative AI story, and this was it.

But that mutual benefit, the complaint and subsequent reporting suggest, concealed growing friction. While Apple engineers tested ChatGPT-Siri integrations, OpenAI was quietly building its own hardware team, recruiting senior talent from Apple itself. According to the complaint, more than 400 former Apple employees now work at OpenAI and related companies — a pattern Apple now alleges crossed into organised competitive intelligence gathering.

The relationship soured throughout 2025 and into 2026. Apple reportedly considered rebuilding Siri on Google's Gemini instead of OpenAI's technology. Industry analysts watched the competitive tensions mount at the center of both companies' AI hardware strategies, with the partnership increasingly strained as OpenAI moved aggressively into hardware development.

The Defendants: Key Personnel and Corporate Entities Named in the Complaint

The lawsuit names OpenAI itself, io Products (the hardware subsidiary), and two former Apple engineers now at OpenAI.

Tang Yew Tan — OpenAI's Chief Hardware Officer

Tang Yew Tan spent 24 years at Apple, most recently serving as Vice President of Product Design for the iPhone and Apple Watch — two of history's most commercially successful consumer electronics. He departed Apple in February 2024 to co-found io Products alongside designer Jony Ive, Scott Cannon, and Evans Hankey. When OpenAI announced the acquisition of io Products in May 2025 (with the deal officially closing on July 9, 2025), Tan moved into OpenAI's orbit as its dedicated hardware division lead, where he now serves as Chief Hardware Officer.

According to the complaint's allegations, Tan's role involved more than sharing general knowledge. Apple claims he:

• Emailed himself information about Apple suppliers and internal industry summaries before leaving
• Obtained and retained Apple's internal "Need to Know" security document describing procedures for employee departures, and shared it with new OpenAI hires
• Used knowledge of Apple's internal codenames and offboarding procedures to identify which job candidates still worked at Apple
• Allegedly instructed those candidates to "stay at Apple as long as they can" while keeping confidential communication channels open
• Allegedly directed candidates to bring "actual parts, batteries, logic boards, and SIPs" to OpenAI job interviews for "show and tell" sessions

These allegations frame Tan's conduct not as individual action but as institutional practice — language meant to establish corporate liability at OpenAI. The complaint refers to him by his role as Chief Hardware Officer throughout, underscoring that Apple regards his alleged conduct as reflecting OpenAI's institutional culture, not a rogue individual.

Chang Liu — Alleged Post-Departure Access to Apple Systems

Chang Liu worked as a senior systems electrical engineer at Apple for eight years before leaving on January 22, 2026 to join OpenAI. According to the complaint's allegations, his actions involved continued technical access after his departure. Apple claims Liu allegedly:

• Did not return his Apple-issued laptop when he left
• Used that retained laptop to maintain access to Apple's internal cloud storage after his departure
• Downloaded dozens of confidential hardware-related files through that unauthorized access
• Texted a former Apple colleague, Yu-Ting "Alyssa" Peng, about his continued access, writing:

  "LOL, I found out I can access the [network storage], so funny"

The bracketed "[network storage]" reflects the complaint's notation. If verified, such documentary evidence — a contemporaneous text message acknowledging unauthorized access — would carry real weight in court, since it directly undercuts arguments that his access was accidental or unknowing.

Alleged Trade Secret Misappropriation: Categories and Scope

Allegations in the complaint span several categories fundamental to hardware product development:

Category	Alleged Conduct	Primary Defendant
Hardware design files	Dozens of confidential files allegedly downloaded from Apple's internal cloud storage after departure	Chang Liu
Supplier information	Details about Apple's hardware suppliers allegedly emailed to himself before departure	Tang Tan
Manufacturing processes	Internal process documentation related to product fabrication, including Apple's proprietary metal finishing technique; an Apple manufacturing partner is alleged to have been persuaded to perform Apple's metal-finishing processes for OpenAI's hardware development	Tang Tan / OpenAI
Supply chain strategies	Internal industry summaries and strategic sourcing data	Tang Tan
Internal codenames & offboarding documents	Apple's "Need to Know" security document used to identify and approach candidates still at Apple and coach departing employees	Tang Tan / OpenAI
Physical hardware components	"Actual parts, batteries, logic boards, SIPs" allegedly brought to interviews at OpenAI's direction	Allegedly coached by Tang Tan

The complaint employs pointed language. Apple's lawyers argue that OpenAI "turned to trade secret misappropriation to free-ride off Apple's decades of innovation" and that OpenAI's hardware business "rests on the shakiest of foundations, rotten to its core by its illegal reliance on misappropriated trade secrets." The complaint also signals that Apple considers the named allegations to be only the beginning — stating directly: "This is the tip of the iceberg. Apple lacks visibility into what's been happening behind closed doors at OpenAI, where such misconduct is normalized and exemplified by leadership." This language hints at the potential for expanded claims once discovery begins.

Notably, neither Sam Altman nor Jony Ive appear as defendants, despite possible proximity to the alleged conduct — a tactical choice that keeps the defendant list lean while preserving the ability to implicate others through the discovery process.

Pre-Litigation Communication and Non-Response

According to the complaint, Apple did not sue without warning. Apple wrote to OpenAI in February 2026 expressing concerns that confidential information was moving across company lines and requested a meeting to discuss it. According to the complaint, OpenAI did not respond.

In trade-secret litigation, a defendant's receipt of notice about alleged misappropriation followed by failure to investigate or act is typically damaging evidence of willful misconduct. Under the federal Defend Trade Secrets Act, such findings can trigger enhanced statutory damages. Apple's legal team is expected to lean heavily on this timeline as a central part of its argument.

Since the complaint was filed, OpenAI has publicly denied the core allegations, stating in widely reported remarks that it has "no interest in other companies' trade secrets." As the litigation proceeds, the clash between Apple's documented timeline — including the alleged February 2026 letter that the complaint states went unanswered — and OpenAI's blanket denial is likely to be a central early battleground.

The Broader Strategic Context: AI Hardware Competition

To grasp what's really at stake, consider what the alleged misappropriation reportedly concerns — not existing products, but OpenAI's next product category entirely.

OpenAI, following its acquisition of io Products and Jony Ive's design involvement, is widely reported to be developing a "phone-like device built around AI agents instead of apps" — a potential challenge to the iPhone's foundational design paradigm. If it succeeds, it would not just compete in the smartphone market; it could upend the core concepts underlying Apple's entire product ecosystem. Apple, for its part, is pursuing its own AI-first hardware strategy through Apple Intelligence.

Industry observers understand this litigation as both legal remedy and strategic tool. By filing suit and alleging that OpenAI's hardware operation is fundamentally compromised, Apple creates legal and reputational friction around investor pitches, manufacturing partnerships, and regulatory approvals. This mirrors a well-documented Silicon Valley pattern: using intellectual property law to generate competitive friction at critical industry turning points.

The complaint also raises bigger questions about talent mobility and competitive norms. The phrase "open Apple, closed Apple" has long described the tension between Apple's secretive product culture and the broader tech industry's relatively free movement of talent. A lawsuit of this scale signals real consequences for crossing those boundaries — with implications felt by the more than 400 former Apple employees currently working at OpenAI and related companies, and by others in conversations with AI companies.

Parallel Legal Action: Elon Musk's xAI Antitrust Claims Against Apple and OpenAI

The Apple v. OpenAI trade-secret dispute sits within a larger landscape of AI industry legal conflicts. In August 2025 — months before the trade-secret suit surfaced — Elon Musk's AI company xAI (along with X Corp) filed its own lawsuit in U.S. federal court in Texas against both Apple and OpenAI, on entirely different grounds.

While Apple's complaint centers on trade-secret theft, the xAI/X Corp lawsuit alleges antitrust violations. The complaint describes what xAI characterises as "a tale of two monopolists joining forces to ensure their continued dominance" in AI. The theory hinges on Apple's deep integration of ChatGPT into the iPhone — rather than offering a neutral competitive platform — as an arrangement that allegedly shuts out rivals like xAI's Grok chatbot from reaching tens of millions of users. The complaint also alleges that Apple's App Store ranking algorithms favour OpenAI applications while deprioritising competitors.

The xAI complaint was filed in the Northern District of Texas, Fort Worth Division. The presiding judge, Mark Pittman, issued a sharply worded order acknowledging that the case had "at best minimal connections to the Fort Worth Division" — yet ultimately kept the case in Fort Worth rather than transferring it to a different venue. In a passage that drew wide attention, Judge Pittman observed: "Venue is not a continental breakfast; you cannot pick and choose on a Plaintiffs' whim where and how a lawsuit is filed." He also noted that under the plaintiffs' proposed logic, "there is not a district and division in the entire United States that would not be an appropriate venue for this lawsuit" — while explaining that the Fifth Circuit's elevated transfer standard left him with limited discretion to act. Legal observers noted the order's pointed criticism of forum-shopping even as the case remained in Texas.

The xAI antitrust litigation carries an ideological edge. Musk has publicly criticised the Apple-OpenAI partnership as anti-competitive, framing the lawsuit as a consumer-choice and competition-policy issue rather than a purely commercial dispute. Whether federal courts apply antitrust frameworks to this type of distribution integration remains a contested question; such claims face steep evidentiary and doctrinal burdens.

Key Events and Timeline

• February 2024: Tang Yew Tan departs Apple after 24 years to co-found io Products alongside Jony Ive, Scott Cannon, and Evans Hankey.
• June 2024: Apple announces integration of OpenAI's ChatGPT into Siri at WWDC, launching the commercial partnership.
• May 21, 2025: OpenAI announces the acquisition of io Products in an all-equity deal valued at approximately $6.5 billion — of which OpenAI paid roughly $5 billion in new consideration, having already held an approximately 23% stake in io Products — bringing Tang Yew Tan and Jony Ive's design team into OpenAI's orbit.
• July 9, 2025: The io Products deal officially closes; the team formally merges with OpenAI.
• August 25, 2025: xAI and X Corp file antitrust lawsuit in the Northern District of Texas, Fort Worth Division, against Apple and OpenAI alleging exclusionary conduct.
• January 22, 2026: Chang Liu leaves Apple for OpenAI; Apple alleges he retains his company-issued laptop and maintains unauthorized cloud access after his departure.
• February 2026: Apple sends a letter to OpenAI expressing confidentiality concerns and requesting a meeting; the complaint states no response was received.
• July 10, 2026: Apple files trade-secret lawsuit against OpenAI, Tang Yew Tan, Chang Liu, and io Products in the Northern District of California.

Legal and Competitive Implications

With the lawsuit now filed, the immediate legal focus turns to whether Apple can obtain a preliminary injunction — a remedy that could halt OpenAI's use of any allegedly misappropriated materials while litigation continues. Such an injunction could effectively slow key aspects of OpenAI's hardware development for months or years. OpenAI will presumably contest both the factual basis and legal sufficiency of the allegations, likely arguing that its hardware efforts are independently developed and that the named individuals' conduct was not institutionally directed.

The discovery phase may prove most consequential. Apple's complaint signals — through its explicit "tip of the iceberg" language — that the company believes additional misconduct exists beyond what has been alleged in the initial filing. With OpenAI's landmark hardware acquisition now under active legal scrutiny, observers note that the ultimate resolution could set important precedents for how aggressively the technology industry can recruit across competitive lines in the AI era.

The outcome will likely shape how other major technology companies approach employee transitions, the limits of talent mobility in sensitive hardware roles, and the boundaries between legitimate competitive recruitment and organised intelligence gathering — questions that, in an era of intense AI hardware competition, carry industry-wide significance.

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Sources and Further Reading

The allegations described in this article derive from Apple's complaint filed July 10, 2026 in the U.S. District Court for the Northern District of California. All allegations remain unproven; the article attributes claims to Apple's complaint throughout and they do not represent adjudicated findings. Readers seeking to verify the specific claims should review the official court filing directly. Key independent coverage includes reporting from TechCrunch, CNBC, Reuters, and the Financial Times. For the xAI antitrust action, the complaint was filed in the Northern District of Texas, Fort Worth Division; background reporting is available from Reuters and CNBC. The io Products merger closing date is confirmed by OpenAI's own announcement. As facts in ongoing litigation frequently shift during discovery and pre-trial motions, this article reflects the state of publicly confirmed claims as of publication and will be updated as new verified information becomes available.