Apple's Trade-Secrets Case Against a Former Employee Is a Warning for Job Switchers

Apple has filed new evidence in a trade-secrets lawsuit against a former employee, Chang Liu, who Apple accuses of taking confidential company data before leaving to join OpenAI, according to TechCrunch. Apple has not obtained a verdict, and Liu has not been convicted of any wrongdoing — the case remains an active legal dispute.

According to the TechCrunch report, Apple's filing alleges Liu took a confidential Apple circuit schematic and a tool sharing a name with an internal Apple engineering application. Apple says it based part of its filing on Liu's old company laptop, which his legal counsel turned over for investigation in August 2026. The filing reportedly cites text messages in which Liu allegedly acknowledged still having access to Apple files, accompanied by "crying laughing" emojis. Apple also alleges that after learning in June 2026 that it was investigating him, Liu enlisted an OpenAI colleague, Yu-Ting Peng, to help destroy evidence — an allegation Apple's attorneys say shows it isn't running a "fishing expedition."

Engadget reported that forensic review of the laptop also turned up proprietary engineering tools Apple says mirror internal software Liu allegedly used to run simulations at OpenAI, and that Apple describes the effort to "restore" Apple-issued devices after the investigation began as an attempt to eliminate forensic evidence. OpenAI has pushed back, calling Apple's accusations "careless, aggressive and oddly personal" and denying wrongdoing, according to Engadget.

Apple is seeking a preliminary injunction to block OpenAI from using Apple technology in hardware development, plus expedited discovery, TechCrunch reported. The outlet also noted that more than 400 former Apple employees currently work at OpenAI, underscoring how much talent — and potential exposure — flows between the two companies.

What this means for job seekers

Moving to a direct competitor is common, especially in tech, and it isn't illegal on its own. But this case is a reminder that what you bring with you — literally and digitally — matters as much as the move itself.

A few practical takeaways:

• Don't take files, code, or internal tools "just in case." Even something as small as a saved schematic or an internal-use application can become the basis of a trade-secrets claim. If it lived on a company laptop or in a company account, leave it there.
• Return company hardware promptly and fully. Delayed laptop returns or incomplete wipes can look like concealment later, even if that wasn't the intent.
• Be careful what you put in writing. Text messages and emails are discoverable in litigation. Casual language about company data, even meant as a joke, can be read very differently in a courtroom filing.
• Know your agreements before you sign an offer. Many employment contracts include non-disclosure, non-compete, or invention-assignment clauses that outlive your employment. Read them before your last day, not after a lawsuit lands.
• When in doubt, ask HR or legal for an exit checklist. Reputable employers often have a formal offboarding process specifically to protect both sides from disputes like this one.

Trade-secrets suits are expensive and disruptive for everyone involved, including the employee at the center of them. For job seekers weighing a move to a rival company, the safest strategy is simple: bring your skills and experience, not your former employer's files.

Sources

• Apple shares 'shocking evidence' against former employee accused of stealing company data for OpenAI — TechCrunch
• Apple adds more allegations to its trade secrets lawsuit against OpenAI — Engadget