Secondly, after finding a cooperative company, ask the price clearly. Official fees are official fees, agency fees are agency fees, and agency fees are also divided into application fees, reply review fees, annual fees and so on. . Or a fee package authorized by a patent. In this way, you can avoid shady expenses and increase the burden on your economic budget.
And reduce the patent application fee. This can save a lot of money.
Finally, we must sign the contract.
The rest should be no big problem. There will be some details.