Apple filed new evidence from a forensic analysis of a MacBook belonging to former engineer Chang Liu, alleging he downloaded confidential Apple schematics and used them at OpenAI, then destroyed evidence when confronted. The filing supports Apple's push for expedited discovery in its lawsuit against OpenAI for alleged trade secret theft.

• Liu downloaded a confidential Apple circuit schematic and used it in his work at OpenAI, running simulations with it in an electrical engineering tool called LTspice
• Liu sent instructions to destroy evidence to an OpenAI colleague after learning of Apple's internal investigation, and the colleague confirmed compliance
• Apple argues feeding trade secrets into AI models creates "irreversible and continually propagating uses" of those secrets, making the breach harder to contain
• OpenAI had the MacBook available but chose not to inspect it, instead advancing theories that the data would disprove Apple's claims