I didn't apply for a patent for my invention. Want to cooperate with big companies to prevent patents from being stolen!

First of all, it is necessary for patent agencies to keep secrets from customers. Secondly, patent agents are not qualified to apply for patents, just to ensure the interests of applicants. When you sign a contract with an agency, one of the things is that the agency should keep secrets for its customers.

I think the most important thing is not whether your patent will be leaked by the agent, but whether you can fully express what you want to express when writing. Incomplete statement, patents could not be authorized at that time, because many patents could not be authorized and spent money in vain. In that case, you have leaked the technology and finally got the patent.

The premise of cooperation must be that you apply for an invention, and then big companies will be willing to cooperate with you, otherwise you will have no guarantee. If you apply for a patent, if it shows great value, more than one company may come to you.

You can visit an agency on the spot and then repeatedly confirm the contents of the patent written by it. This kind of patent authorization is promising.