What kinds of drug patents are there? What is the difference between patented APIs and patented drugs?

You are a mixture of patent classification and technology classification, and they are incompatible. You can't say anything when you are mixed together.

Patented drugs, of course, have pricing priority, because others can't produce this medicine. You have the exclusive right to speak, hehe. In addition, patented drugs are especially preferred when bidding for drugs.

Drug patent, please see this for details.

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Zhong Kui talks about patent blog.