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Apple unveils MacBook evidence in trade-secret fight with OpenAI

A newly filed court document alleges a former Apple engineer downloaded confidential schematics, used them at OpenAI, and then directed a colleague to destroy evidence after learning he was under investigation.

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What matters

  • Apple filed new court evidence from Chang Liu's work MacBook alleging he downloaded and used confidential Apple schematics at OpenAI.
  • Apple claims Liu instructed an OpenAI colleague to destroy evidence after learning he was under investigation, and the colleague confirmed they would do so.
  • Apple is pushing for expedited discovery, arguing OpenAI's resistance may signal ongoing evidence destruction.
  • OpenAI previously moved to dismiss the lawsuit and published a public blog post challenging Apple's claims as 'careless, aggressive, and oddly personal.'
  • Apple alleges OpenAI has poached over 400 Apple employees for AI projects.

What happened

Apple escalated its trade-secret theft lawsuit against OpenAI on Monday, August 31, 2026, with a new court filing that details evidence allegedly recovered from the work MacBook of former iPhone engineer Chang Liu. Liu left Apple for OpenAI in January 2026 and is one of two former Apple employees—alongside former VP Tang Tan—named in Apple's lawsuit, which was filed in July 2026 against OpenAI, io Products, Liu, and Tan.

According to Apple's filing, the MacBook that Liu recently handed over contains several incriminating items:

  • A confidential Apple circuit schematic was downloaded and used in Liu's work at OpenAI.
  • OpenAI employees were allegedly aware of Liu's continued access to Apple's third-party cloud storage.
  • After Liu learned he was being investigated by Apple, he allegedly sent instructions to an OpenAI colleague, who confirmed they would destroy evidence.
  • A tool Liu used at OpenAI shared the same name as an internal Apple engineering application used for development work.

Apple is using these findings to push the court for expedited pretrial discovery, arguing that every delay causes further harm and that OpenAI's resistance to faster discovery could itself reflect an active effort to destroy evidence.

OpenAI has previously sought to dismiss the lawsuit, arguing that Apple failed to demonstrate it owns protectable trade secrets, failed to allege plausible misappropriation, and failed to show concrete injury. OpenAI also took the unusual step of publishing a public blog post titled "Apple is getting this wrong," sharing iMessage and email exchanges to challenge Apple's narrative and calling the lawsuit "careless, aggressive, and oddly personal."

Why it matters

This case is one of the most significant trade-secret disputes in the AI era, pitting the world's most valuable consumer-hardware company against its most prominent AI startup. Apple alleges that OpenAI has poached over 400 employees from Apple to work on AI projects, and the lawsuit signals that Apple is willing to litigate aggressively to protect its engineering IP as talent flows to AI competitors.

The new MacBook evidence, if upheld, could undercut OpenAI's motion to dismiss and strengthen Apple's argument that urgent discovery is needed before more evidence disappears. For the broader tech industry, the case sets a precedent for how companies enforce trade-secret boundaries when employees jump to rivals in fast-moving fields like AI hardware and systems engineering.

What to watch

  • Whether the court grants Apple's motion for expedited discovery in light of the new MacBook evidence.
  • How OpenAI responds to the destruction-of-evidence allegations—particularly whether it addresses the specific claim that a colleague confirmed evidence would be destroyed.
  • Whether the court allows OpenAI's motion to dismiss to proceed or lets the case move into full discovery.
  • Any further public statements or blog posts from OpenAI, given its earlier decision to litigate in the court of public opinion.

What to do next

Developers

Audit your use of any code, schematics, or tools brought from prior employers and ensure no proprietary assets are stored on personal or current-employer devices.

This case highlights how forensic examination of work laptops can surface proprietary files and naming conventions that create legal exposure.

Founders

Review onboarding procedures for new hires from competitors to ensure no proprietary materials are retained or used, and document compliance.

Apple alleges OpenAI employees were aware of a new hire's access to a former employer's cloud storage, underscoring the risk of institutional knowledge of IP leakage.

PMs

Ensure product teams use only internally developed or properly licensed tools and naming conventions, avoiding reuse of names or assets from prior employers.

Apple's filing flags that a tool used at OpenAI shared the same name as an internal Apple engineering application, which became part of the legal record.

Investors

Monitor the court's ruling on Apple's expedited discovery motion and OpenAI's motion to dismiss as early signals of case trajectory.

The outcome could materially affect OpenAI's legal exposure and set precedent for trade-secret enforcement in AI talent wars.

Operators

Strengthen offboarding and data-access revocation processes so departing employees lose access to cloud storage and internal systems immediately.

Apple alleges Liu retained access to Apple's third-party cloud storage after joining OpenAI, which could have been prevented with tighter offboarding controls.

Testing notes

Caveats

  • This is a legal dispute; the allegations are unproven and the case is ongoing. No product or tool is available to test.