How to apply for an invention patent to China National Patent Office? Can I also apply for a patent for invention directly to China National Patent Office?

Yes, you can. You can write and submit your own patent application documents, send them to the State Information Bureau by registered mail, or register an electronic patent application account for electronic application.

If you don't know much about this, you'd better entrust an agency to handle it, so as not to affect rights protection.

We are also a professional organization. If you have any questions or need to apply for an agent, you can leave me a message at Baidu hi.

When you say that the State Bureau of Great Inventions came to you for on-the-spot examination, do you mean that your invention is to be transferred and the transferee came to you for on-the-spot examination?

The National Bureau of Knowledge won't come to you for on-the-spot audit. They only review the application documents.

If you want to transfer the invention patent, the other party asks for a field inspection and asks you to remit money to them for the trip first. You must believe that this is all a lie!

If you are afraid of missing the opportunity, you can ask them to come and keep the bill at their own expense before reimbursing them.

However, if the transferee really wants to see if there is a market for your patent, they won't care about such a little travel expenses, not to mention that you are transferring the patent, so why should you subsidize the travel expenses and meals?