1, similarity: the duration of patent and the compensation of drugs are both for prolonging the effective protection period of patent right and protecting the economic interests of the patentee.
2. Difference: The patent term compensation is aimed at the unreasonable delay in the authorization process of drug patents and invention patents, aiming at reasonably distributing the responsibility for the delay in patent authorization; Compensation for the time limit for drug approval is to compensate for the time taken by the new drug listing review and approval. For the invention patents related to new drugs that have obtained the marketing license in China, the patentee shall, at the request of the patentee, compensate for the patent period.