Up-to-date and authoritative guide to Cambodian trademark law. Information on trademark registration, search, enforcement, renewal and anticounterfeiting.Learn how to register a trademark in Cambodia with our comprehensive guide. Specific international laws and procedures regulate the registration of international trademarks. Granting patents registrations is generally based on a firsttofile basis. After the 5th year or within the 6th year of the trademark registration, the trademark owner has to file an Affidavit of Use (as attached form) Cambodia applies the first-to-file principle to trade marks. This guide provides an overview of the procedure of trademark application in Cambodia, covering key steps, timelines, and important documents. Complete information on filing an application for trademark registration in Cambodia. A trademark is a sign used to distinguish goods and services of different organizations and individuals.