General drugs are invention patents, and there will be substantive examination, which requires three characteristics: novelty, creativity and practicality. However, this thing is not easy to explain clearly. It is recommended to find a patent agency to apply, otherwise the preliminary examination will be very troublesome. It's annoying when it comes to the actual trial and reply to the notice of opinions. Let's leave it all to the agent.
The cost is hard to say. If you find a good company to write, the agency fee is about seven or eight thousand, and the same is about three thousand. Anyway, the gap is quite big. This is the agency fee, and then the actual trial will be charged, 2500, usually one and a half years after the application.
Then there is the certificate fee at the time of authorization, 200, which is about this number. I'm afraid I made a mistake.
Then there is the maintenance fee. You can apply for meeting three years ago, and the fee is not high.