A Brazilian startup, two and a half years old, worth 1.2 billion dollars, with Peter Thiel''s fund as a partner, has been sued by the São Paulo bar association. The lawsuit cites no fraud and no data leak. What is in dispute is the sales channel: who can buy an AI that writes legal briefs.
Enter became Latin America''s first artificial intelligence unicorn by raising 100 million dollars in a round led by Founders Fund. The product analyzes cases, suggests strategy and drafts the first version of the briefs. The customer is not the law firm: it is the company''s in-house legal department, the one using the tool to cut what it pays outside firms.
The thesis the lawsuit installs
The civil action was filed on October 7. And the request is technically interesting: the thesis is that a signature alone does not prove work.
The OAB-SP wants a record of who chose the defense strategy, who reviewed each text, what changes were made, a review time compatible with reading, the responsible lawyer identified in every draft, and the sources indicated. It wants independent audits every six months, for five years, with an auditor chosen by the court and paid by the company. And it wants the records preserved since January 2024.
The thesis is sound. Signing is not analyzing. If an agent produces every draft and the lawyer only signs, professional responsibility became a rubber stamp.
Enter''s answer and the detail that reveals the real fight
Enter''s response: review, signature and filing remain with lawyers hired by the client companies, the technology is support, and several of the requested measures are already current practice in the operation.
Now the detail that reveals the real fight. The OAB asks, as an alternative, that strategy recommendation and drafting be sold only to lawyers or law firms.
In other words: if it cannot be supervised, the customer may only be a lawyer.
And then the dispute stops being about technology. Enter grew selling to the company''s in-house legal department, which uses the tool to cut what it pays outside firms. What the OAB wants is the channel.
The irony of the clock
The chosen standard of proof is review time compatible with reading, and the request is defensible as a control: nobody reviews fifty pages in thirty seconds.
But the clock is the metric of whoever bills by the hour, and the machine compresses time. The lawyer who reviews in half the time starts to look like they did not work.
What nobody is saying: the volume of repetitive cases was the training ground for interns and juniors, where the profession formed its future seniors. That door is closing now.
Conclusion
Lawyers are only the first. Every regulated profession that proves work with billable hours will walk through this door. In Brazil, the proof is being demanded from a unicorn.
The case is alive: the Rio de Janeiro bar asked to join the action, and the OAB edited its rules this week for companies that sell legal AI. For anyone operating AI in a regulated environment, the message is operational: decision trail, documented review time, and a clear boundary between who executes and who signs, before a lawsuit draws it for you.