Can I file a patent using ChatGPT or Claude?

Not directly. ChatGPT and Claude cannot file a patent application, because patent offices only accept applications signed and submitted by the applicant or a registered attorney or agent, through portals such as USPTO Patent Center or EPO Online Filing. What you can do from inside the chat is everything that leads up to the filing: describe the invention, turn it into a structured invention disclosure, check it for gaps and hand it to a patent attorney.

With a patent workflow connector such as Lightbringer MCP, that hand-off happens without leaving Claude or ChatGPT. You create the disclosure in conversation, submit it for attorney review, read the attorney's comments and approve changes in the same chat, and Lightbringer's registered patent attorneys draft and file the application, typically within days rather than months. The platform and the connector are free; you pay a fixed, published price per application only when you decide to file. Before you paste an unfiled invention into any assistant, check its data-training settings first. See Does pasting my invention into ChatGPT or Claude count as public disclosure?