While the new laws make numerous changes to Mexico’s intellectual property framework, the most substantial change is that a declaration of use must now be filed for all trademark registrations within three months of the third anniversary of the registration date. So, for example, if a trademark is registered on Jan. 1, 2021, a declaration of use must be filed before April 1, 2024. This new rule is applicable to all registrations granted after Aug. 10, 2018. A declaration of use must also be filed when a trademark owner seeks to renew its registration. If the trademark owner does not prove use of the mark in Mexico in the appropriate manner and timeframe, the owner will be considered to have waived and renounced its trademark.