Confidential technology is not necessarily patented technology.
Because applying for a patent means the disclosure of technology.
But some technologies or formulas are not willing to be disclosed. For example, the formula of Coca-Cola is not patented, but it belongs to confidential technology.
Generally speaking, it is good for ordinary people to have patents, and there can be no secret technology.
Therefore, generally speaking, non-patented technology cannot contribute to the partnership.