Laotian trademark system is based on a first-to-file principle.

The current trademark law of Laos is silent regarding opposition proceeding and trademark applications are not published for opposition purpose. However, in practice, opposition against a prior-filed mark can be performed on case-by-case basis upon provision of (i) a sufficient evidence of worldwide registration and use of the latter mark and/or bad-faith action and must be filed with the TM Office before the issuance of the trademark registration certificate.

For filing an opposition against a pending application, the following documents are required :
(i) A Original Power of Attorney, which is signed by the Applicant and duly notarized;
(ii) Documentary evidence in support of the opposition (if any).

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