1. The time it takes to review and approve Amazon trademark registration is relatively long.

2. This is because Amazon, as one of the world's largest e-commerce platforms, has a large number of trademark registration applications submitted every day. Reviewers need to review each application one by one to ensure compliance with relevant laws and policies, so the review time is relatively long.

3. In addition, the time it takes to pass the review is also affected by the completeness and accuracy of the materials provided by the applicant. If the materials provided by the applicant are incomplete or contain errors, the review process may be more time-consuming. Therefore, it is recommended that applicants carefully prepare the relevant materials before submitting their trademark registration applications to ensure accuracy in order to speed up the review and approval process.