Apple alleges former engineer accessed trade secrets after moving to OpenAI

Apple has accused a former employee of accessing proprietary circuit designs after joining OpenAI, according to a filing in S. federal court. The allegation centers on Chang Liu, who previously worked as a senior system electrical engineer at Apple. Apple claims Liu accessed a power converter circuit schematic while at OpenAI and trained an AI agent using confidential Apple information in March 2026.

The Allegation

The filing, reported by multiple outlets including Deccan Chronicle and The Economic Times, states that Apple identified Liu as a defendant in its trade secret case against OpenAI. Apple alleges that Liu, after leaving the company, accessed the power converter circuit and used proprietary Apple data to train an AI model. The company did not disclose the specific nature of the circuit or how the information was used.

The New Evidence

According to Apple, the evidence came to light from a MacBook computer that OpenAI provided to Apple on August 21 as part of the legal proceedings. The information surfaced during the formal exchange of materials between the legal teams, as reported by Livemint, which cited a Reuters report on the filing. Apple has since moved the court to expedite the discovery process in the trade secret case against OpenAI, asking the court to accelerate the exchange of evidence.

OpenAI's Response

OpenAI has asked the court to dismiss Apple's lawsuit. The company maintains that it is building products that are "entirely new," a position reported by multiple outlets. OpenAI has not yet responded to requests for comment on the specific allegations, according to reports.

Legal Context

The case is part of an ongoing legal dispute between the two technology companies over trade secrets. Apple's filing in S. federal court alleges that Liu accessed the schematic and trained an AI agent using proprietary information in March 2026. The exact timeline of Liu's employment and the circumstances surrounding the alleged access have not been detailed in the court documents, as reported.

The legal proceedings continue in S. federal court, where Apple is seeking expedited discovery to examine the evidence further. OpenAI's motion to dismiss the lawsuit remains pending.