Apple vs OpenAI Trade Secret Lawsuit Explained

Apple sued OpenAI, two former Apple employees and OpenAI’s hardware subsidiary io Products in July 2026, alleging that OpenAI improperly obtained Apple trade secrets while building its own consumer hardware business. Apple accuses former employees Chang Liu and Tang Yew Tan of taking or exploiting confidential information concerning unreleased products, hardware engineering, manufacturing processes and suppliers. OpenAI denies stealing Apple’s technology and has asked the court to dismiss the case, arguing that Apple is trying to slow a new competitor and discourage employees from leaving. The dispute escalated again on August 31 when Apple said a forensic examination of a former employee’s laptop produced evidence that an Apple circuit schematic was actually used in work at OpenAI and alleged that evidence had been destroyed.

Apple Sues OpenAI

Apple filed its lawsuit against OpenAI on July 10, 2026. The case, Apple Inc. v. Liu et al., was filed in the U.S. District Court for the Northern District of California. The defendants include former Apple employees Chang Liu and Tang Yew Tan, OpenAI Foundation, OpenAI Group PBC and io Products LLC. Apple alleges violations of the federal Defend Trade Secrets Act and breach of contract by the two former employees. [Court Records]

Apple says its former employees stole confidential information for OpenAI’s benefit. Apple alleges that its internal investigation uncovered a pattern in which employees leaving Apple for OpenAI retained, downloaded or disclosed information concerning Apple hardware, unreleased products, manufacturing techniques and supplier relationships. [AP] [Washington Post]

Apple portrays the alleged activity as an organized effort rather than isolated misconduct. The company alleges that OpenAI employees and executives systematically sought confidential information from current and former Apple workers as OpenAI assembled a team to develop consumer hardware. OpenAI denies that characterization. [TechCrunch] [Ars Technica]

Chang Liu Allegations

Chang Liu worked at Apple for approximately eight years before joining OpenAI. Liu was a senior systems electrical engineer working on the iPhone product line before leaving Apple in January 2026 for OpenAI. [Court Records] [TechCrunch]

Apple alleges Liu retained an Apple-issued computer after leaving the company. According to the complaint, Liu failed to immediately return a MacBook that had been authenticated to Apple’s network. Apple says messages recovered during its investigation indicated that Liu knew he still possessed another Apple computer after his departure. [TechCrunch] [Ars Technica]

Apple says Liu discovered a security flaw that continued giving him access to its files after he left. Apple alleges that Liu encountered a rare authentication bug that allowed him to reach shared Apple network folders despite no longer working for the company. Apple says it fixed the vulnerability after discovering it. [TechCrunch]

Apple alleges Liu downloaded dozens of confidential hardware files while employed by OpenAI. According to Apple, the documents included technical specifications, engineering presentations, proprietary project information and details concerning unreleased products. [Ars Technica] [TechCrunch]

A message cited by Apple showed Liu reacting to his continued access to Apple’s network. Apple says Liu messaged then-Apple employee Yu-Ting “Alyssa” Peng after discovering that he could still reach an internal network-storage system, writing that he found the situation funny. Apple cited the exchange as evidence that Liu understood his access was unusual. [TechCrunch] [Ars Technica]

Apple alleges Liu also accessed an Apple computer belonging to Peng. According to the complaint, Liu used Peng’s Apple-issued computer while she still worked for Apple and he was already employed by OpenAI. Peng subsequently left Apple for OpenAI. [TechCrunch]

Apple Says A Confidential Circuit Schematic Was Used At OpenAI

Apple announced what it described as significant new evidence on August 31. After obtaining and examining Liu’s former Apple-issued MacBook, Apple told the court that its forensic investigation had uncovered evidence supporting allegations that confidential Apple material was not merely retained but was actually used after Liu joined OpenAI. [Reuters] [TechCrunch]

Apple alleges Liu used a confidential Apple circuit schematic in his work at OpenAI. The company says forensic evidence from the laptop showed that Liu downloaded a proprietary power-converter circuit schematic and subsequently used the material while working for OpenAI in March 2026. [Reuters] [TechCrunch]

Apple says Liu used the schematic while working with an AI agent. According to Apple’s August 31 filing, forensic analysis indicated that Liu used the confidential circuit information in connection with an AI agent during his work at OpenAI. The underlying evidence has been substantially redacted from public filings, and OpenAI disputes Apple’s broader allegation that its hardware development relies on Apple trade secrets. [Reuters] [MacRumors]

Evidence Destruction Allegations

Apple has accused Liu and an OpenAI colleague of attempting to destroy evidence. Apple alleges that after Liu learned in June that the company was investigating his conduct, he sent instructions to OpenAI employee Yu-Ting Peng concerning deletion or destruction of evidence and that Peng indicated she would comply. [TechCrunch] [The Verge]

Apple says forensic information could disappear unless discovery is accelerated. The company argues that computer logs, metadata, communications and other digital evidence could be lost and has asked the court for expedited discovery allowing it to obtain information from OpenAI and current and former employees more quickly. [The Verge] [TechCrunch]

The evidence-destruction claims remain allegations. As of September 1, 2026, the court had not ruled that OpenAI, Liu or Peng improperly destroyed evidence. OpenAI continues to deny that its hardware operation is using stolen Apple trade secrets. [Reuters]

Tang Tan Allegations

Tang Yew Tan is OpenAI’s chief hardware officer and spent 24 years at Apple. Tan previously served as Apple’s vice president of product design for the iPhone and Apple Watch before leaving and becoming involved with Jony Ive’s io Products hardware venture. He later became OpenAI’s chief hardware officer. [TechCrunch] [Ars Technica]

Apple accuses Tan of using knowledge of confidential Apple projects while recruiting employees. The company alleges that Tan used internal Apple project code names during OpenAI interviews and questioned candidates about unreleased products and confidential projects they had worked on at Apple. [TechCrunch] [Washington Post]

Apple alleges Tan asked Apple employees interviewing at OpenAI to bring physical components to interviews. According to the complaint, candidates were asked to bring actual hardware parts they had worked on for “show and tell” sessions with the OpenAI hardware team. Apple says the requested materials included components such as batteries, logic boards and shields associated with confidential Apple work. [TechCrunch] [Ars Technica]

OpenAI disputes the claim that Tan solicited confidential components. OpenAI argues that bringing hardware components to engineering interviews is common and says the materials involved were publicly available rather than secret Apple prototypes. Apple disputes that characterization and says Tan specifically sought components connected to employees’ confidential work. [OpenAI] [9to5Mac]

Apple Says OpenAI Helped Employees Avoid Security Procedures

Apple alleges OpenAI recruits were coached on how to avoid being immediately removed from Apple facilities. Apple sometimes immediately terminates access for employees who announce that they are leaving for certain competitors, a process referred to in internal discussions as a “walkout.” Apple alleges OpenAI personnel advised prospective hires about how to avoid triggering that process. [TechCrunch] [Ars Technica]

Apple says an internal document describing its departure procedures ended up at OpenAI. The complaint alleges that Tan retained or obtained an internal Apple document marked “Need to Know” describing security procedures for departing employees and that information from the document was shared with prospective OpenAI hires. [TechCrunch] [Ars Technica]

OpenAI says the document was used to help employees comply with Apple’s requirements rather than evade them. The company says Tan instructed employees not to bring confidential information to OpenAI and disputes Apple’s characterization of his actions as a scheme to circumvent security procedures. [OpenAI]

Apple Supplier And Manufacturing Allegations

Apple alleges OpenAI also sought confidential information about its supply chain. The lawsuit extends beyond product drawings and technical documents to information concerning manufacturers, vendors and processes that Apple says it developed over decades of producing consumer electronics. [AP] [Washington Post]

Apple says OpenAI benefited from confidential information involving a proprietary metal-finishing process. According to the complaint, OpenAI and its partners approached one of Apple’s trusted manufacturing partners and allegedly led the company to believe that Apple had authorized use of a specialized process. Apple says the technique was proprietary and had been developed for its products. [TechCrunch] [The Verge]

More Than 400 Former Apple Employees At OpenAI

More than 400 former Apple employees now work at OpenAI, according to court filings. The movement of employees between the companies has become a central part of the dispute as OpenAI rapidly builds its hardware operation. [Reuters] [TechCrunch]

Apple says its investigation has identified additional former employees who may have information relevant to the case. In August, Apple told the court that it had identified at least 11 additional former employees who might have participated in, witnessed or have information concerning the alleged transfer of confidential material. [TechCrunch]

Apple says some former employees contacted it about company-owned devices after the lawsuit was filed. Apple told the court that multiple former employees who had moved to OpenAI reached out after the lawsuit began about returning Apple-issued equipment they had retained. Apple cited the development as another reason it wanted expedited discovery. [TechCrunch]

OpenAI’s Defense

OpenAI denies that it possesses or wants Apple’s trade secrets. The company says its hardware project is developing products that are fundamentally different from Apple’s existing devices and has accused Apple of exaggerating routine employee conduct into an alleged corporate espionage operation. [OpenAI] [Reuters]

OpenAI says Apple’s own security and employee-offboarding practices contributed to the dispute. The company argues that Apple allowed employees to use personal iCloud accounts for work and sometimes failed to immediately eliminate former employees’ access to internal material. OpenAI says those practices created situations that Apple is now improperly characterizing as theft. [OpenAI] [TechCrunch]

OpenAI says former Apple colleagues asked Liu for help after he left. The company released communications showing Apple employees contacting Liu for assistance with questions concerning work he had handled before his departure. OpenAI argues that this provides innocent context for at least some of Liu’s continued interaction with Apple information. [OpenAI] [TechCrunch]

Apple says those requests do not explain Liu downloading confidential material from its network. In response, Apple argued that a former manager asking Liu a question did not authorize him to exploit continuing network access and download dozens of confidential files after becoming an OpenAI employee. [9to5Mac]

OpenAI says Apple has failed to identify legally protectable trade secrets with sufficient specificity. In its motion to dismiss, OpenAI argues that broad categories such as hardware engineering, manufacturing and supplier relationships cannot automatically be treated as protectable trade secrets and that Apple has not adequately demonstrated misappropriation or ongoing harm. [TechCrunch] [Reuters]

Apple says it has identified specific secrets and that OpenAI is improperly asking the judge to resolve disputed facts at the dismissal stage. Apple argues that its complaint contains sufficiently detailed allegations and says OpenAI’s alternative explanations should be tested through evidence and discovery rather than used to dismiss the lawsuit before discovery begins. [9to5Mac]

OpenAI Calls The Lawsuit A Mess Of Apple’s Own Making

OpenAI intensified its attack on Apple’s lawsuit on August 31. In a federal court filing, OpenAI called the dispute a “mess of Apple’s own making” and accused Apple of attempting to blame former employees and a new competitor for weaknesses in its own internal procedures. [Reuters]

OpenAI argues that Apple is trying to discourage employees from leaving for a competitor. The company says California law generally protects employee mobility and contends that Apple’s lawsuit could have the effect of intimidating workers considering positions with OpenAI. [Reuters]

Liu and Tan deny improperly retaining or using Apple trade secrets. Their defenses contend that conduct identified by Apple either involved assistance requested by former colleagues, non-confidential material or information that Apple has not adequately established as a protected trade secret. [Reuters]

Jony Ive And OpenAI’s Hardware Business

The lawsuit comes as OpenAI makes a major push into consumer hardware. OpenAI acquired io, the hardware startup founded by former Apple design chief Jony Ive and others, in a deal valued at approximately $6.5 billion in 2025. [AP] [TechCrunch]

Jony Ive is not personally named as a defendant. Apple sued io Products but did not name Ive individually in the case. The individual defendants are Tang Tan and Chang Liu. [Court Records]

Apple argues that its confidential information could give OpenAI an unfair shortcut in building hardware. Apple has spent decades developing expertise in miniature electronics, manufacturing at enormous scale, supplier relationships and consumer-device engineering. Its lawsuit alleges OpenAI could avoid years of costly development by improperly obtaining that information from former Apple employees. OpenAI denies relying on Apple secrets. [Washington Post] [Reuters]

Apple And OpenAI Were Previously Partners

The lawsuit represents a dramatic deterioration in a relationship that began as a high-profile technology partnership. Apple announced ChatGPT integration across its operating systems in 2024, allowing Siri and Apple’s writing tools to call on OpenAI models for certain requests. [AP]

OpenAI’s expansion into hardware turned the companies into more direct competitors. As OpenAI recruited hundreds of former Apple employees and began developing its own consumer devices, the company moved into an area that forms the core of Apple’s business. [Reuters] [Axios]

Apple Seeks A Preliminary Injunction

Apple wants the court to restrict OpenAI’s use of disputed information while the lawsuit proceeds. The company has requested a preliminary injunction that would prohibit OpenAI and the individual defendants from possessing, using or disclosing Apple trade secrets and would restrict hardware development based on allegedly misappropriated Apple technology. [Reuters]

Apple is also seeking expedited discovery. The company wants earlier access to documents, electronic records and testimony from OpenAI, io, Liu, Tan and other people who may have knowledge of the alleged conduct. Apple argues that the August forensic findings strengthen the need for rapid preservation and collection of evidence. [TechCrunch] [The Verge]

OpenAI has asked the court to dismiss Apple’s lawsuit. OpenAI argues that Apple has not adequately established protectable trade secrets, misappropriation or the type of continuing injury necessary to support the requested relief. Apple has asked the court to reject the dismissal request. [OpenAI] [9to5Mac]

A major hearing is scheduled for October 1, 2026. The court is scheduled to consider Apple’s request for preliminary relief as the companies continue fighting over discovery and OpenAI’s attempt to dismiss the case. [Axios]

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