When engineer Chang Liu left Apple for OpenAI's hardware division in January, he didn't just take his experience with him, according to Apple's 40-page lawsuit filed Friday. The company says Liu departed with three specific assets that now sit at the center of its trade secret case against OpenAI.

Apple alleges Liu never returned his company-issued laptop after leaving and that the device retained access to sensitive InCenter files. The filing frames this as the first, most straightforward piece of a broader........

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