OpenAI has published a detailed, evidence-backed rebuttal to Apple’s trade secrets lawsuit, escalating a legal fight that has quickly become one of the most closely watched disputes in Silicon Valley’s AI industry. The Apple OpenAI lawsuit, filed on July 10, 2026, in California, accuses the ChatGPT maker of conspiring with former Apple engineers to steal proprietary hardware technology. Nearly a month later, OpenAI says the case is built on outdated information and simple mistakes that Apple’s own lawyers have since acknowledged.
Summary
Key takeaways
- Apple sued OpenAI on July 10, 2026, alleging a “coordinated pattern of misconduct at an institutional level” tied to trade secret theft.
- Two former Apple employees, Tang Yew Tan and Chang Liu, are central to the allegations; Liu’s last day at Apple was January 22, 2026.
- Apple is seeking a preliminary injunction, arguing the theft was systematic rather than incidental.
- OpenAI’s August 3 blog post, titled “Apple is getting this wrong,” calls the suit “careless, aggressive and oddly personal” and includes email screenshots as evidence.
- OpenAI says Apple’s own outside counsel admitted to sending a February email to the wrong person after confusing two Asian last names.
Apple’s Trade Secrets Lawsuit Against OpenAI
Apple’s case rests on the claim that OpenAI benefited from a deliberate, company-wide effort to extract confidential hardware knowledge. The lawsuit does not describe a single leak or a rogue employee; it frames the alleged theft as something closer to an internal strategy inside OpenAI.
Core Allegations and Legal Claims
According to Apple’s complaint, the misconduct followed a “coordinated pattern” that reached an institutional level within OpenAI. The filing claims a former Apple an OpenAI staff member leveraged an authentication vulnerability that OpenAI had requested Apple’s engineering team to address proprietary hardware into job interviews, and that company leadership “normalized” this kind of behavior over time. Apple argues the pattern wasn’t an accident but a systematic effort spanning multiple levels of OpenAI’s organization. On that basis, Apple is asking the court for a preliminary injunction, a legal move that would let a judge intervene before the case even reaches trial.
Key Individuals Involved
Two names anchor the complaint. Tang Yew Tan, whom Apple describes as its Chief Hardware Officer for more than 24 years before he moved to OpenAI, is accused of trying to obtain and use Apple’s trade secrets. Chang Liu, a former Apple engineer whose last day at the company was January 22, 2026, is accused of accessing confidential Apple information after he had already left. Both now work for OpenAI, and both sit at the center of Apple’s argument that the AI lab benefited from information it should never have had access to.
OpenAI’s Public Rebuttal and Defense
OpenAI’s response, published as a blog post titled “Apple is getting this wrong,” is far more detailed than its earlier statements and includes screenshots of email and iMessage exchanges. The company argues that Apple’s narrative collapses once the full communication record is examined.
Denial of Trade Secret Theft
OpenAI opens its rebuttal by rejecting the entire premise of the case. The company describes the trade secrets lawsuit as “careless, aggressive and oddly personal,” adding pointedly that Apple has “built a reputation for obsessing over the smallest details” and that this filing “sadly doesn’t live up to that reputation.” OpenAI also defends Tang Tan directly, stating he has always told colleagues that the company does not want, and must not use, confidential information from other firms, and noting his 24-plus years at Apple made him one of its most recognized hardware leaders.
Clarifying the Cited Communications
A large part of OpenAI’s defense targets the specific evidence Apple used to build its case. OpenAI says Apple originally claimed it contacted the company in February and received no response, but Apple’s outside lawyers have since admitted they emailed the wrong person after confusing two similar Asian last names — and only conceded the mistake after OpenAI pointed it out. Apple also claimed it held a discussion with OpenAI’s General Counsel; OpenAI says Apple now concedes that conversation never took place.
On Chang Liu, OpenAI says Apple’s own account has shifted. The company argues that Apple employees, not Liu, initiated contact after his departure, reaching out to ask for help locating files and answering technical questions. Published messages show Liu assisting with file transfers and responding to questions about ongoing Apple projects after he had already left. OpenAI frames these exchanges as ordinary post-employment courtesy rather than evidence of a conspiracy, describing the underlying issue as “residual access” caused by Apple’s own failure to properly cut off system access when staff depart — meaning departing employees can retain access to files they neither want nor know about.
Attempts at Amicable Resolution and Legal Arguments
OpenAI says it tried to settle the dispute before Apple ever filed suit. Per the company’s account, Apple told OpenAI in earlier contact that it was “resolving any issues,” then went silent for five months before filing the lawsuit without raising the specific allegations that now appear in court. OpenAI says it “wished Apple had raised these issues” beforehand and had offered to work with Apple to clear things up. On the request for a preliminary injunction Apple is pursuing, OpenAI calls it both “based on false information” and unnecessary, insisting there is nothing to block because the company does not have, and does not want, any of Apple’s trade secrets.
Broader Context of AI Talent Competition and Legal Disputes
This fight didn’t emerge in isolation. It follows a period in which OpenAI ramped up its consumer hardware ambitions by hiring away high-profile Apple talent, including former chief design officer Jony Ive, straining what had once been one of Silicon Valley’s more notable AI partnerships.
It’s also not the first time OpenAI has faced this kind of accusation. The company previously fought off similar trade-secret claims brought by Elon Musk’s xAI, and came out on top. That pattern points to a wider dynamic across the industry: as OpenAI pulls senior engineers and designers from rivals, some of those rivals appear increasingly willing to take the fight to court rather than absorb the loss of talent quietly. Whether that strategy proves more effective for Apple than it did for xAI is now a question for a California judge to decide.
FAQ
What are the main allegations Apple has made against OpenAI?
Apple alleges that OpenAI conspired with former Apple employees to steal proprietary trade secrets in a systematic manner, describing a “coordinated pattern of misconduct at an institutional level,” and is seeking a preliminary injunction against OpenAI.
Who are the key former Apple employees involved in the lawsuit?
The individuals named are Tang Yew Tan, described as Apple’s former Chief Hardware Officer for more than 24 years, and Chang Liu, a former Apple engineer who left the company on January 22, 2026. Both now work at OpenAI.
How does OpenAI respond to the allegations?
OpenAI denies possessing or using any Apple trade secrets, calls the lawsuit “careless, aggressive and oddly personal,” and says the communications Apple cited were legitimate post-employment assistance rather than evidence of a conspiracy.
Did OpenAI try to resolve the dispute before the lawsuit was filed?
Yes. OpenAI says it attempted to resolve the matter amicably before Apple filed suit, and that Apple had told the company it was “resolving any issues” before going silent for five months and then filing the lawsuit anyway.
Article produced with the assistance of artificial intelligence and reviewed by the editorial team.
