Apple has sent legal letters to dozens of employees currently working at OpenAI, according to the Financial Times. The action follows the lawsuit filed on July 14 against former employees accused of stealing secrets about unannounced hardware products. Now the pressure extends to those still at Sam Altman’s company.

Why it matters to you. This escalation signals that the dispute is not an isolated skirmish: Apple is actively protecting information about future hardware, likely tied to AI integration in devices. If you work at a tech company with confidential projects, the sequence is clear: targeted lawsuit, then letters to those still on the other side. It’s a pattern of how trade secrets are defended in a market where people move quickly between labs.

If you want to follow the thread, as we reported on July 14, the initial lawsuit documented unauthorized access and components brought to interviews. Today’s letters expand the perimeter: not just those who left, but those who remain and may have had access to classified material. A signal that the issue is broader than it seemed three days ago.

The details.

The July 14 lawsuit named three former Apple employees who moved to OpenAI, with documented evidence of access to internal servers after their resignations were announced and hardware components physically brought to interviews. According to filed documents, at least one of the accused had downloaded schematics and specs of unannounced products in the days before leaving the company.

The letters now sent to OpenAI employees still in the company, reported by the Financial Times, do not constitute a formal lawsuit, but rather a legal warning: Apple is asking them to disclose whether they have had access to or received confidential information from colleagues coming from Cupertino. The exact number is not public, but sources close to the matter speak of “dozens” of people involved.

Why this move now.

The timeline suggests that Apple first identified the most obvious leaks (the lawsuit against the former employees), then broadened its internal investigation to understand who else might be exposed. Legal letters are a standard tool to crystallize positions: anyone responding evasively or not at all becomes a more likely target for subsequent action.

The broader context is known: Apple is building hardware with integrated AI, and OpenAI competes on products that could overlap (Bloomberg’s July 15 report revealed OpenAI’s first hardware device, a screenless speaker). The timing is no accident: Apple wants to stop any possible sharing of information before products launch.

The implications for the industry.

This case is becoming a precedent for how intellectual property conflicts are handled in an industry where talent moves between labs building increasingly similar products. The sequence “lawsuit against those who left + letters to those who remain” is not new, but the scale (dozens of people) and speed (three days between lawsuit and letters) signal unusual aggression.

For employees involved, the legal letter is a moment of choice: responding cooperatively can close the matter, responding poorly (or ignoring it) can lead to being named in a subsequent lawsuit. For companies, the message is clear: controls on access in the days before resignation and policies on materials taken outside the office really matter when litigation comes.

What’s left to know.

We don’t yet know if the letters have produced substantive responses, nor whether Apple intends to further expand the perimeter of people involved. The Financial Times reports that some of the letters explicitly ask to preserve communications and documents in anticipation of possible legal action, suggesting that Apple is preparing for a next phase if responses prove unsatisfactory.

OpenAI has not commented publicly. The most likely strategy for Altman’s company is to cooperate where required by law and keep everything else out of the spotlight, avoiding statements that could be used in court.